Instruction/ maintenance manual of the product ES-2048 ZyXEL Communications
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ES-2048 Intelligent Layer 2 Switch 48-port Fast Ethernet + 2 GbE Dual Personality Interfaces (Copper/SFP) User ’ s Guide V ersion 3.70 8/2006 Edition 1.
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ES-2048 User’s Guide Copyright 1 Copyright Copyright © 2006 by ZyXEL Communications Corpo ration. The contents of this publication may not be reprod uced in any part or as a whole, transcribed, sto.
ES-2048 User’s Guide 2 Certifications Certifications Federal Communications Commissi on (FCC) Interference St atement This device complies with Part 15 of FCC rul es. Operation is subject to the following two conditions: • This device may not cause harmful interference.
ES-2048 User’s Guide Certifications 3 2 Select your product from t he drop-down list box on the Zy XEL home page to go to that product's page. 3 Select the certification you wish to view from this page.
ES-2048 User’s Guide 4 Safety Warnings Safety W arnings For your safety , be sure to read and fo llow all warning notices and instructions. • Do NOT use this product near water , for exam ple, in a wet basement or nea r a swimming pool. • Do NOT expose your device to dampness, dust or corrosive liquids.
ES-2048 User’s Guide Safety Warnings 5 This product is recyclab le. Dispose of it properly ..
ES-2048 User’s Guide 6 ZyXEL Limited Warranty ZyXEL Limited W arranty ZyXEL warrants to the original en d user (purchaser) that this product is free from any defects in materials or workmansh ip for a period of up to tw o years from the date of purchase .
ES-2048 User’s Guide Customer Support 7 Customer Support Please have the following information r eady when you contact customer support. • Product model and serial number . • W arranty Information. • Date that you received your de vice. • Brief description of the problem and the steps yo u took to solve i t.
ES-2048 User’s Guide 8 Customer Suppo rt +” is the (prefix) number you enter to make an interna tional telephone call. NORWAY support@zyxel.no +47-22-80-61-80 www .zyxel.no ZyXEL Communications A/S Nils Hansens vei 13 0667 Oslo Norway sales@zyxel.
ES-2048 User’s Guide Table of Contents 9 T able of Content s Copyright .................................................. ................................................................ 1 Certifications ............................................ .
ES-2048 User’s Guide 10 Table of Contents Chapter 3 Hardware Overview .................................. .............................................................. 41 3.1 Panel Connections ......................... ................. ............
ES-2048 User’s Guide Table of Contents 11 7.2 System Inf ormation ............................ ............. ................ ............. ................ ..67 7.3 General Setup ............ ................ ............. ................ ........
ES-2048 User’s Guide 12 Table of Contents 1 1.1.3 STP Port S tates ............................ ................ ............. ................ .......... 106 1 1.2 Rapid Sp anning Tree Protocol S tatus .......... ................ ................ .
ES-2048 User’s Guide Table of Contents 13 Chapter 18 Queuing Method ................................................. .................................................. 141 18.1 Queuing Method Overvi ew ......... ............. ................ .....
ES-2048 User’s Guide 14 Table of Contents Chapter 23 Maintenance .................................. ..................................................... .................. 169 23.1 The Maintena nce Screen ......... ............. ............. .....
ES-2048 User’s Guide Table of Contents 15 Chapter 26 Syslog .................................. ..................................................... ............................ 193 26.1 Overview .... ............. ............. ................ ...
ES-2048 User’s Guide 16 Table of Contents 31.10 Saving Y our Configuration .. ............. ................ ................ ................ ............. 217 31.10.1 Switch Configuration File ... ................. ................ ............. .
ES-2048 User’s Guide Table of Contents 17 33.8 Enabling T runking ............................. ................ ................ ............. ................ 258 33.9 Enabling Port Authentication ................... ................ .............
ES-2048 User’s Guide 18 Table of Contents 35.4 Enable VLAN ................ ............. ................ ............. ................ ............. .......... 276 35.5 Disable VLAN ................... ................. ... ............. ........
ES-2048 User’s Guide List of Figure s 19 List of Figures Figure 1 Backbone Application ............ .......... ................ ............. ............. ............. 34 Figure 2 Bridging Application ........... ............. ............. ......
ES-2048 User’s Guide 20 List of Figures Figure 39 Protocol Based VLAN ....... ................ ............. ................ ................ ....... 92 Figure 40 Protocol Based VLAN Configurat ion Example ............... ................ ....... 93 Figure 41 Port Based VLAN Setup (All Connected) .
ES-2048 User’s Guide List of Figure s 21 Figure 82 SNMP Management Model .................. ................ ................ ................ 178 Figure 83 Access Control: SNMP .................. ............. ................ ................ ....
ES-2048 User’s Guide 22 List of Figures.
ES-2048 User’s Guide List of Tables 23 List of T ables T able 1 Panel Connec tions ......................... ................ ............. ................ ............. 41 T able 2 LEDs ........... ................ ............. ................. .
ES-2048 User’s Guide 24 List of Tables T able 39 Multicas t S tatus ..................... ................. ................ ............. ................ ... 146 T able 40 Multicas t Setting ........... ............. ................ .............
ES-2048 User’s Guide List of Tables 25 T able 82 Physical and Env ironmental S pecific ations .. ................ ............. ............. 292 T able 83 Classes of IP Addresses ................. ................ ............. ................ ...
ES-2048 User’s Guide 26 List of Tables.
ES-2048 User’s Guide Preface 27 Preface Congratulations on you r purchase of th e ES-2048 Intelligent Layer 2 Switch. This preface introduces you to the ES-204 8 Intelligent Layer 2 Sw itch and discusses the conventions of this User ’ s Guide. It also provides information on other related documentation.
ES-2048 User’s Guide 28 Preface Graphics Icons Key User Guide Feedback Help us help you. E-mail all User Guide-related comments, questions or suggestions for improvement to techwriters@zyxel.com.tw or send regular mail to The T echnical Writi ng T eam, ZyXEL Communications Corp.
ES-2048 User’s Guide Chapter 1 Getting to K now Your Switch 29 C HAPTER 1 Getting to Know Y our Switch This chapter introduces the main feat ures and applications of the switch.
ES-2048 User’s Guide 30 Chapte r 1 Getting to Know Your Switch Port Mirroring Port mirroring allows you to copy traf fic going from one or all ports to another or all ports in order that you can examine the traffic from the mi rror port (the port you copy the traf fic to) without interference.
ES-2048 User’s Guide Chapter 1 Getting to K now Your Switch 31 Cluster Management Cluster Managemen t allows you to manage s witches through one switch, called the cluste r manager .
ES-2048 User’s Guide 32 Chapte r 1 Getting to Know Your Switch • Port-based VLAN • IEEE 802.1Q VLAN • 802.1x Authen tication • Limit dynamic port MAC address learning • S tatic MAC address filtering Bandwid th Control • The ES-2048 supports rate limiting in 64 Kbps incremen ts allowing you to create different service plans.
ES-2048 User’s Guide Chapter 1 Getting to K now Your Switch 33 T wo Slot s for Mini-GBIC Modules The mini-GBIC (Gigabit Interface Converter) module transceivers all ow flexibility in connection options. Y ou can use mini-GBIC trans ceivers for fiber connections to backbone Ethernet switches.
ES-2048 User’s Guide 34 Chapte r 1 Getting to Know Your Switch Figure 1 Backbone Application 1.4.2 Bridging Example In this example application the switch connects dif ferent company departme nts ( RD and Sales ) to the corpora te backbone . It can allev i ate bandwidth conten tion and eliminate server and network bottlenecks.
ES-2048 User’s Guide Chapter 1 Getting to K now Your Switch 35 Switching to higher-speed LA Ns such as A T M (Asynchronous Transmission Mode) is not feasible for most people due to the expense of replacing all existing Ethernet cables and adapter cards, restructuring y our network and comp lex maintenance.
ES-2048 User’s Guide 36 Chapte r 1 Getting to Know Your Switch Figure 4 T ag-based VLAN Application 1.4.4.2 VLAN Shared Server Exa mple Shared resources such as a server can be us ed by all ports in the same VLAN as the server , as shown in the following example.
ES-2048 User’s Guide Chapter 2 Hardware Installation and Connection 37 C HAPTER 2 Hardware Inst allation and Connection This chapter shows you how to in stall and connect the switch. 2.1 Freest anding Inst allation 1 Make sure the switch is clean and dry .
ES-2048 User’s Guide 38 Chapter 2 Hardware Inst allation and Conne ction 2.2 Mounting the Switch on a Rack This section lists the rack mounting requirements and precautions and describes the installation steps. 2.2.1 Rack-mounted Installation Requirement s • T wo mounting brackets.
ES-2048 User’s Guide Chapter 2 Hardware Installation and Connection 39 Figure 8 Mounting the Switch on a Ra ck 2 Using a #2 Philips screwdriver , install the M5 flat head screws through the mounting bracket holes into the rack. 3 Repeat steps 1 and 2 to attach the second mounting bracke t on the other side of the rack.
ES-2048 User’s Guide 40 Chapter 2 Hardware Inst allation and Conne ction.
ES-2048 User’s Guide Chapter 3 Hardware Overview 41 C HAPTER 3 Hardware Overview This chapter describes the front panel a nd rear pa nel of the switch and shows you how to make the hardware conn ections. 3.1 Panel Connections The figures below show the front pane l and the rear panel of the switch.
ES-2048 User’s Guide 42 Chapter 3 Hardware Overview 3.1.1 Console Port For local management, you can use a computer w ith terminal emulation software configured to the following parameters: • VT10.
ES-2048 User’s Guide Chapter 3 Hardware Overview 43 • Speed: Auto • Duplex: Auto • Flow control: Of f 3.1.3 Mini-GBIC Slots These are slots for mini-GBIC (Gigabit Interfa ce Converter) transceivers. A transceiver is a single unit that houses a transmitter and a receiver .
ES-2048 User’s Guide 44 Chapter 3 Hardware Overview Figure 12 Installed T ran sceiver 3.1.3.2 T r anscei ver Remova l Use the following steps to remove a mini GBIC transceiver (SFP module). 1 Open the transceiver ’ s latch (latch styles vary). Figure 13 Opening the T ransceiver ’s Latch Example 2 Pull the transceiver out of the slot.
ES-2048 User’s Guide Chapter 3 Hardware Overview 45 3.2 LEDs The following table describes the LEDs on the switch. Table 2 LEDs LED COLOR ST A TUS DESCRIPTION PWR Green On The system is turned on. Off The system is off. SYS Green Blinking The system is rebooting and performing self-diagnostic tests.
ES-2048 User’s Guide 46 Chapter 3 Hardware Overview.
ES-2048 User’s Guide Chapter 4 The Web Configurator 47 C HAPTER 4 The W eb Configurator This section introduces the con figuration and functions of the web configurator . 4.1 Introduction The web configu rator is an HTML-based ma nage ment interface that allows easy switch setup and management via Interne t browser .
ES-2048 User’s Guide 48 Chapter 4 The Web Configurator 4 Click OK to view the first web configurator screen. 4.3 The St atus Screen The St a t u s screen is the first screen that displa ys when you acces s the web configura tor . The following figure shows the navigat ing co mponen ts of a web configurator screen.
ES-2048 User’s Guide Chapter 4 The Web Configurator 49 4.4 Menu Overview In the navigation panel, click a main l ink to reveal a list of submenu links.
ES-2048 User’s Guide 50 Chapter 4 The Web Configurator The following table lists the various web configurator screens within the sub-links. The following table describes the links in the navigation panel.
ES-2048 User’s Guide Chapter 4 The Web Configurator 51 IP Setup This link takes you to a screen w here you can confi gur e the management IP address, subnet mask (nece ssary fo r switch management) and DNS (d omain name server). Port Setup This link takes you to screens where you can configure settings for individual switch ports.
ES-2048 User’s Guide 52 Chapter 4 The Web Configurator 4.4.1 Change Y our Password After you log in for the first time, it is reco mmended y ou change the default admin istrator password. Click Management , Access Control and then Logins to display the next screen.
ES-2048 User’s Guide Chapter 4 The Web Configurator 53 Click the Save link in the upper right ha nd corner of the web configurator to save your configuration to nonvolatile memory . Nonvolatile memory refers to the ES-2048’ s storage that remains even if the ES-2048’ s power is turned off.
ES-2048 User’s Guide 54 Chapter 4 The Web Configurator 1 Connect to the console port usin g a comput er with terminal em ulation software. See Section 3.1.1 on page 42 for details. 2 Disconnect and reconnect the switch’ s power to begin a session.
ES-2048 User’s Guide Chapter 4 The Web Configurator 55 Figure 19 Reload the C onfiguration file: Via Console Po rt The switch is now reinitialized with a default configuration file including the default password of “1234”.
ES-2048 User’s Guide 56 Chapter 4 The Web Configurator Figure 20 Resetting the Switch: V ia the Console Port 5 After the resetting, type atgo to restart the switch. 4.8 Logging Out of the W eb Configurator Click Logout in a screen to exit the web configurator .
ES-2048 User’s Guide Chapter 5 Initial Setup Example 57 C HAPTER 5 Initial Setup Example This chapter shows how to set up the switch for an example network. 5.1 Overview The following lists the configuration steps for the initial setup: • Create a V LAN • Set port VLAN ID • Configure the switch IP management address 5.
ES-2048 User’s Guide 58 Chapter 5 Initial Setup Example 1 Click Advanced App lication and VLAN in the navigation panel and click the St a t i c VLAN link. 2 In the S tatic VLAN screen, select ACTIVE , enter a descriptive name in the Name field and enter 2 in the VLAN Group ID field for the VLAN2 network.
ES-2048 User’s Guide Chapter 5 Initial Setup Example 59 Figure 23 Initial Setup Network Example: Port VID 1 Click Advanced App lications and VLAN in the navigation panel. Then click the VLAN Port Setting link. 2 Enter 2 in the PVID field for port 1 and clic k Apply to save your changes back to the run-time memory .
ES-2048 User’s Guide 60 Chapter 5 Initial Setup Example 3 Click Basic Setting and IP Setup in the navigation panel. 4 Configure the related fields in the IP Setup screen. For the VLAN2 network, enter 192.168.2.1 as th e IP address and 255.255.255 .0 as the subnet mask.
ES-2048 User’s Guide Chapter 6 Syst em Status and Port Statist ics 61 C HAPTER 6 System S t atus and Port S t atistics This chapter describes the system status (web configurator ho me page) and port details screens.
ES-2048 User’s Guide 62 Chapter 6 System Status and Port Statistics Figure 25 S tatus The following table describes the labels in this screen. Table 6 Status LABEL DESCRIPTION Port This identifi es the Ethernet port . Click a port number to display the Port De t ails screen (refer to Figure 26 on page 64 ).
ES-2048 User’s Guide Chapter 6 Syst em Status and Port Statist ics 63 6.2.1 St atus: Port Det ails Click a number in the Port column in the St a t u s screen to display indivi dual port statistics. Use this screen to check status and detailed performance data about an individual port on the switch.
ES-2048 User’s Guide 64 Chapter 6 System Status and Port Statistics Figure 26 S tatus: Port Details The following table describes the labels in this screen. Table 7 Status: Port Details LABEL DESCRIPTION Port Info Port NO. This field displays the port number .
ES-2048 User’s Guide Chapter 6 Syst em Status and Port Statist ics 65 S tatus If STP (S panning Tree Protocol) is enabled, this field displays the STP state of the port (see Section 1 1.1 on page 105 for more information). If STP is disabled, this field displays FORW ARDING if the link is up, otherwise, it displays STOP .
ES-2048 User’s Guide 66 Chapter 6 System Status and Port Statistics Runt This field shows the number of packets rece ived that were too short (shorter than 64 octets), including the ones with CRC errors. Distribution 64 This field shows the number of pa ckets (i ncluding bad packets) received that were 64 octets in length.
ES-2048 User’s Guide Chapter 7 Basic Setting 67 C HAPTER 7 Basic Setting This chapter describes how to configure the System Info, General Setup , Switch Setup , IP Setup and Port Setup screens.
ES-2048 User’s Guide 68 Chapter 7 Basic Setting Figure 27 System Info The following table describes the labels in this screen. Table 8 System Info LABEL DESCRIPTION System Name This field displays the descriptive name of the switch for identificati on purposes.
ES-2048 User’s Guide Chapter 7 Basic Setting 69 7.3 General Setup Use this screen to enter administrative details, time settings and lo gin precedence. Click Basic Setting and General Setup in the navigation panel to di splay the screen as shown. Current This field displays this fan's current speed in Revolutions Per Minute (RPM).
ES-2048 User’s Guide 70 Chapter 7 Basic Setting Figure 28 General Setup The following table describes the labels in this screen. Table 9 General Setup LABEL DESCRIPTION System Name Choose a descriptive name for identification purposes. This name consists of up to 64 printable characters; spaces are allowed.
ES-2048 User’s Guide Chapter 7 Basic Setting 71 7.4 Introduction to VLANs A VLAN (V irtual Local Area Network) allows a physical network to be partitioned into multiple logical networks. Device s on a logical network belong to one group. A device can belong to more than one group.
ES-2048 User’s Guide 72 Chapter 7 Basic Setting Note: VLAN is unidirectional; it only govern s outgoing traf fic. See Chapter 8 on pa ge 81 for information on port-based and 802.1Q tagged VLANs. 7.5 Switch Setup Screen Click Basic Setting and then Switch Setup in the navigation panel to display the scree n as shown.
ES-2048 User’s Guide Chapter 7 Basic Setting 73 Aging T ime Enter a time from 10 to 3000 seconds. This is how long all dynamically lea rned MAC addresses remain in the MAC address table before they age out (a nd must be relearned). GARP T imer: Switches join VLANs by making a declaratio n.
ES-2048 User’s Guide 74 Chapter 7 Basic Setting 7.6 IP Setup Use the IP Setup screen to configure the default gate way device, the default domain name server and add switch IP address. 7.6.1 Manage ment IP Addresses The switch needs an IP address for it to be mana ged over the network.
ES-2048 User’s Guide Chapter 7 Basic Setting 75 Figure 30 IP Setup.
ES-2048 User’s Guide 76 Chapter 7 Basic Setting The following table describes th e labels in this screen. Ta b l e 1 1 IP Setup LABEL DESCRIPTION Domain Name Server DNS (Domain Name System) is for mapping a doma in name to its corresponding IP address and vice versa.
ES-2048 User’s Guide Chapter 7 Basic Setting 77 7.7 Port Setup Full-duplex mode oper ation only applies to poin t-to-point access (for example, when attaching the switch to a workstation, server , or anot her switch). When connecting t o hubs, use a standard cascaded connection set at half-duplex operation.
ES-2048 User’s Guide 78 Chapter 7 Basic Setting Figure 31 Port Setup The following table describes the labels in this screen. Table 12 Port Setup LABEL DESCRIPTION * Settings in this row apply to all ports. Use this row only if you want to make some settings the same for all ports.
ES-2048 User’s Guide Chapter 7 Basic Setting 79 Active Select this check box to enable a port. The factory default for all ports is enabled. A port must be enabled for data transmission to occur . Name Enter a descriptive name that identifie s this port.
ES-2048 User’s Guide 80 Chapter 7 Basic Setting.
ES-2048 User’s Guide Chapter 8 VLAN 81 C HAPTER 8 F VLAN The type of screen you see here depends o n the VLAN T ype you selected in the Switch Setup screen. This chapter shows you how to conf igure 802.1Q tagge d and port-based VLANs. 8.1 Introduction to IEEE 802.
ES-2048 User’s Guide 82 Chapter 8 VLAN 8.2 Automatic VLAN Registration GARP and GVRP are the protocols used to auto matically register VLAN membership acros s switches.
ES-2048 User’s Guide Chapter 8 VLAN 83 8.3 Port VLAN T runking Enable VLAN T runking on a port to allow frames belong ing to unknown VLAN groups to pass through that port. This is useful if yo u want to set up VLAN groups on end devices without having to configure the same VLAN groups on intermediary devices.
ES-2048 User’s Guide 84 Chapter 8 VLAN Figure 33 Switch Setup: Se lect VLAN T ype 8.5 St atic VLAN Use a static VLAN to decide whether an incoming frame on a port should be • sent to a VLAN group as normal d epends on its VLAN tag. • sent to a group whether it has a VLAN tag or not.
ES-2048 User’s Guide Chapter 8 VLAN 85 8.5.2 St atic VLAN Det ails Use this screen to view detailed port se ttings and status of the VLAN group. See Section 8. 1 on page 81 for more information on static VLAN s. Click on an index number in the VLAN St a t u s screen to display VLAN details.
ES-2048 User’s Guide 86 Chapter 8 VLAN 8.5.3 Configure a St atic VLAN Use this screen to configure and view 80 2.1Q VLAN parameters for the switch. See Section 8.1 on page 81 for more information on static VLAN. T o c onfigure a static VLAN, click St a t i c V L A N in the VLAN S tatus screen to display the screen as shown next.
ES-2048 User’s Guide Chapter 8 VLAN 87 Figure 36 VLAN: S tatic VLAN.
ES-2048 User’s Guide 88 Chapter 8 VLAN The following table describes the rela ted labels in this screen. 8.5.4 Configure VLAN Port Settings Use the VLAN Port Setting screen to configure the static VLAN (IEEE 802.1Q) settings on a port. See Section 8.
ES-2048 User’s Guide Chapter 8 VLAN 89 Figure 37 VLAN: VLAN Port Setting.
ES-2048 User’s Guide 90 Chapter 8 VLAN The following table describes the labels in this screen. 8.6 Protocol Based VLANs Protocol based VLANs allow you to group traffi c into logical VLANs based on the protocol you specify .
ES-2048 User’s Guide Chapter 8 VLAN 91 Note: Protocol based VLAN applies to un-t agged packet s and is applicable only when you use IEEE 802.1Q tagged VLAN. For example, port 1, 2, 3 and 4 belon g to static VLAN 100, and port 4, 5, 6, 7 belong to static VLAN 120.
ES-2048 User’s Guide 92 Chapter 8 VLAN Figure 39 Protocol Based VLAN The following table describes the labels in this screen. Table 18 Protocol Ba se d VLAN Setup LABEL DESCRIPTION Active Check thi s box to activate this protocol based VLAN. Port T ype a port to be included in this protocol based VLAN.
ES-2048 User’s Guide Chapter 8 VLAN 93 8.8 Create an IP-based VLAN Example This example shows you how to create an IP VLAN which includes ports 1, 4 and 8. Follow these steps: 1 Activate this protocol based VLAN. 2 T ype the port numb er you want to include in this protoco l based VLAN.
ES-2048 User’s Guide 94 Chapter 8 VLAN 3 Click Add . 8.9 Port Based VLAN Setup Port-based VLANs are VLANs where the packet forwarding de cision is based on the destination MAC address and its associated port. Port-based VLANs require allowed outgoing ports to be defined for each port.
ES-2048 User’s Guide Chapter 8 VLAN 95 Figure 41 Port Based VLAN Se tup (All Conn ected).
ES-2048 User’s Guide 96 Chapter 8 VLAN Figure 42 Port Based VLAN Setu p (Port Isolation).
ES-2048 User’s Guide Chapter 8 VLAN 97 The following table describes the labels in this screen. Table 19 Port Based VLAN Setup LABEL DESCRIPTION Setting Wizard Choose All connected or Port isolation . All connected means all ports can communicate with each other , that is, there are no virtual LANs.
ES-2048 User’s Guide 98 Chapter 8 VLAN.
ES-2048 User’s Guide Chapter 9 Static MAC Fo rwarding 99 C HAPTER 9 S t atic MAC Forwarding Use these screens to configure static MAC address forwarding. 9.1 Overview A static MAC address is an address that has been manually entered in the MAC address table.
ES-2048 User’s Guide 100 Chapter 9 Static MAC Forwarding Figure 43 S tatic MAC Forwarding The following table describes the labels in this screen. Table 20 S tatic MAC Forw arding LABEL DESCRIPTION Active Select this check box to activate your rule.
ES-2048 User’s Guide Chapter 9 Static MAC Fo rwarding 101 Delete Click Delete to remove the selected ent ry from the summary table. Cancel Click Can cel to clear the Delete check boxes.
ES-2048 User’s Guide 102 Chapter 9 Static MAC Forwarding.
ES-2048 User’s Guide Chapter 10 Filtering 103 C HAPTER 10 Filtering This chapter discusses and MAC address port filtering. 10.1 Configure a Filtering Rule Filtering means sifting traf fic going through the switch based on the sour c e and/or dest ination MAC addresses and VLAN group (ID).
ES-2048 User’s Guide 104 Chapter 10 Filte ring Action Select Discard sourc e to drop frame from the sour ce MAC address (specified in the MAC field). The switch can still s end frames to the MAC address. Select D iscard destinatio n to drop frames to th e desti nation MAC a ddress (specified in the MAC field).
ES-2048 User’s Guide Chapter 11 S panning T ree Protoc ol 105 C HAPTER 11 S p anning T ree Protocol The switch supports Spanning T ree Protocol (STP) and Rapid Spanning T ree Protocol (RSTP) as defined in th e following standards. • IEEE 802.1D Span ning T ree Protocol • IEEE 802.
ES-2048 User’s Guide 106 Chapter 11 Spa nning Tree Protocol On each bridge, the root port is the port thro ugh which this bridge communicates with the root.
ES-2048 User’s Guide Chapter 11 S panning T ree Protoc ol 107 1 1.2 Rapid Sp anning T ree Protocol St atus Use this screen to view RSTP settings, see Section 1 1.1 on page 105 for more information on RSTP . Click Spanning T r ee Protocol in the Advanced App lication , Spanning T ree Pro tocol screen.
ES-2048 User’s Guide 108 Chapter 11 Spa nning Tree Protocol 1 1.3 Configure Rapid Sp a nning T ree Protocol Use this screen to configure RSTP settings, see Section 11.1 on page 105 for more information on RSTP . Click the Configuration link in the Rapid Spanning T r ee Protocol S tatus screen as shown next.
ES-2048 User’s Guide Chapter 11 S panning T ree Protoc ol 109 Figure 46 S panning T ree Protocol: Configuration.
ES-2048 User’s Guide 110 Chapter 11 Spa nning Tree Protocol The following table describes the labels in this screen. Table 25 S panning T ree Protocol: Configuration LABEL DESCRIPTION S tatus Click Stat us to display the Rapid Sp anning T ree Protocol Status screen (see Figure 45 on page 107 ).
ES-2048 User’s Guide Chapter 11 S panning T ree Protoc ol 111 Apply Click Apply to save your changes to the swit ch’ s run-time memory . The switch loses these changes if it is turned off or loses power , so use the Save link on the top navigation panel to save your changes to the non-vol atile memory when you are done confi guring.
ES-2048 User’s Guide 112 Chapter 11 Spa nning Tree Protocol.
ES-2048 User’s Guide Chapter 12 Bandwidth Control 113 C HAPTER 12 Bandwid th Control This chapter shows you h o w you can cap the max imum bandwidth using the Bandwidth Control screen. 12.1 Bandwid th Control Overview Bandwidth control mean s defining a maximum allowable bandwidth for incoming and/or out- going traf fic flows on a port.
ES-2048 User’s Guide 114 Chapter 12 Bandwidth Control Figure 47 Bandwidt h Control The following table describes the re lated labels in this screen. Table 26 Bandwidt h Control LABEL DESCRIPTION Active Select this check box to enable ban dwidth control on the switch.
ES-2048 User’s Guide Chapter 12 Bandwidth Control 115 * Settings in this row apply to all ports. Use this row only if you want to make some settings the same for all ports. Use this row first to set the common settin gs and then make adjustments on a port-by-port basi s.
ES-2048 User’s Guide 116 Chapter 12 Bandwidth Control.
ES-2048 User’s Guide Chapter 13 Broadcast Storm Control 117 C HAPTER 13 Broadcast S torm Control This chapter introduces and sh ows you how to configure t h e broadcast storm contro l feature.
ES-2048 User’s Guide 118 Chapter 13 Broadcast Storm Control Figure 48 Broadcast S torm Contro l The following table describes the labels in this screen. Table 27 Broadcast S torm Control LABEL DESCRIPTION Active Select this check box to enable traffic storm control on the switch.
ES-2048 User’s Guide Chapter 13 Broadcast Storm Control 119 * Settings in this row apply to all ports. Use this row only if you want to make some settings the same for all ports. Use this row first to set the common settings an d then make adjustments on a port-by-port basis.
ES-2048 User’s Guide 120 Chapter 13 Broadcast Storm Control.
ES-2048 User’s Guide Chapter 14 Mirroring 121 C HAPTER 14 Mirroring This chapter discusses the Mirror setup screens. 14.1 Port Mirroring Setup Port mirroring allows you to copy a traffic flow to a monitor port (the port you co py the traffic to) in order that you can examine the traf fic from the mi rror port without interference.
ES-2048 User’s Guide 122 Chapter 14 Mirroring Figure 49 Mirroring The following table describes the labels in this screen. Table 28 Mirroring LABEL DESCRIPTION Active Select this check box to activate port mirroring on the switch. Clear this chec k box to disable the feature.
ES-2048 User’s Guide Chapter 14 Mirroring 123 Mirrored Select this option to mirror the traf fic on a port. Direction S pecify the direction of the traffic to mirror by selecting from the drop-down list box. Choices are Egress (outgoing), Ingress (incoming) and Both .
ES-2048 User’s Guide 124 Chapter 14 Mirroring.
ES-2048 User’s Guide Chapter 15 Link Aggregation 125 C HAPTER 15 Link Aggregation This chapter shows you how to logically aggreg ate physical links to fo rm one logical, higher - bandwidth link. 15.1 Link Aggregation Overview Link aggregation (trunking) is the grouping of physical ports into one logical higher-capacity link.
ES-2048 User’s Guide 126 Chapter 15 Link Aggregation 15.2.1 Link Aggregation ID LACP aggregation ID consists of the following information 1 : 15.3 Link Aggregation Control Protocol S t atus Click Advanced App lication , Link Aggr egation in the navigation panel.
ES-2048 User’s Guide Chapter 15 Link Aggregation 127 The following table describes the labels in this screen. 15.4 Link Aggregation Setup Click Configuration in the Link Aggr egation Control P rotocol S tatus screen to display the screen shown next.
ES-2048 User’s Guide 128 Chapter 15 Link Aggregation Figure 51 Link Aggregation: Configuration.
ES-2048 User’s Guide Chapter 15 Link Aggregation 129 The following table describes the labels in this screen. Table 32 Link Aggregation Control Protocol: Configur ation LABEL DESCRIPTION Link Aggregation Control Protocol Active Select this checkbox to enable Lin k Aggregation Control Protocol (LACP).
ES-2048 User’s Guide 130 Chapter 15 Link Aggregation.
ES-2048 User’s Guide Chapter 16 Port Authentication 131 C HAPTER 16 Port Authentication This chapter describes the 802.1x authenti cation method and RADIUS server connection setup.
ES-2048 User’s Guide 132 Chapter 16 Por t Authent ication Note: Refer to the document ation that comes with your RADIUS server on how to configure a VSA.
ES-2048 User’s Guide Chapter 16 Port Authentication 133 Click Advanced App lication , Port Authentication in the navigation pa nel to display the screen as shown. Figure 53 Port Authentication 16.2.1 Configuring RADI US Server Settings From the Port Authentication screen, click RADIUS to display the conf iguration screen as shown.
ES-2048 User’s Guide 134 Chapter 16 Por t Authent ication 16.2.2 Activate IEEE 802.1x Security Use this screen to activate IEEE 802.1x security . From the Port Authentica tion screen, display the configuration screen as shown.
ES-2048 User’s Guide Chapter 16 Port Authentication 135 Figure 55 Port Authentication: 802.1x.
ES-2048 User’s Guide 136 Chapter 16 Por t Authent ication The following table describes the labels in this screen. Table 36 Port Authentication: 802.1x LABEL DESCRIPTION Active Select this check box to permit 802.1x authentication on the switch. Note: Y ou must first enable 802.
ES-2048 User’s Guide Chapter 17 Port Security 137 C HAPTER 17 Port Security This chapter shows you how to set up port security . 17.1 Port Security Setup Port security allows only packets w ith dynami cally learned MAC addresses and/or configured static MAC addresses to pass through a port on the switch.
ES-2048 User’s Guide 138 Chapter 17 Port Security Figure 56 Port Security The following table describes the labels in this screen. Table 37 Port Security LABEL DESCRIPTION Active Select th is option to enable port security on the switch. Port This field displays a port number .
ES-2048 User’s Guide Chapter 17 Port Security 139 * Settings in this row apply to all ports. Use this row only if you want to make some settings the same for all ports. Use this row first to set the common settings and t hen make ad justments on a port-by-port basis.
ES-2048 User’s Guide 140 Chapter 17 Port Security.
ES-2048 User’s Guide Chapter 18 Q ueuing M ethod 141 C HAPTER 18 Queuing Method This chapter introduces th e queuing methods sup ported. 18.1 Queuing Method Overview Queuing is used to help solve performance degradation when there is network congestion.
ES-2048 User’s Guide 142 Chapter 18 Que uing Method 18.1.3 We ighted Round Robin Scheduling (WRR) Round Robin Scheduling services queues on a rotati ng basis and is activated only when a port has more traffic than it can handle. A queue is a given an amount of bandwidth irrespective of the incoming traf fic on that port .
ES-2048 User’s Guide Chapter 18 Q ueuing M ethod 143 Figure 57 Queuing M ethod.
ES-2048 User’s Guide 144 Chapter 18 Que uing Method The following table describes the labels in this screen. Table 38 Queuing Me thod LABEL DESCRIPTION Method Select SPQ ( S trictly Priority Queuing), WFQ (W e ighted Fair Queuing) or WRR (Weighted Round Robin).
ES-2048 User’s Guide Chapter 19 Multicast 145 C HAPTER 19 Multicast This chapter shows you how to conf igure various multicast features. 19.1 Multicast Overview T raditionally , IP packets are transmitted in one of either two ways - Unicast (1 sender to 1 recipient) or Broadcast (1 sender to everybod y on the network).
ES-2048 User’s Guide 146 Chapter 19 Multicast The switch forwards multicast traffic destined for multicast groups (that it has learned from IGMP snooping or that you have manually configured) to ports tha t are members of that group.
ES-2048 User’s Guide Chapter 19 Multicast 147 Figure 59 Multicast Setting.
ES-2048 User’s Guide 148 Chapter 19 Multicast The following table describes the labels in this screen. Table 40 Multicast Setting LABEL DESCRIPTION IGMP Snooping Use these settings to configure IGMP Sn ooping. Active Select Active to enable IGMP Snooping to forward group multicast traffic only to ports that are members of that group.
ES-2048 User’s Guide Chapter 19 Multicast 149 19.4 IGMP Filtering Profile IGMP filter profiles allow you to control access to IGMP multicast groups. This allows you to have a service available to a specific IGMP multicast group.
ES-2048 User’s Guide 150 Chapter 19 Multicast Figure 60 Multicast: IGMP Filtering Profile The following table describes the labels in this screen. Table 41 Multicast: IGMP Filtering Profile LABEL DESCRIPTION Profile Name Enter a descriptive name for the profile for identifica tion purposes.
ES-2048 User’s Guide Chapter 19 Multicast 151 19.5 MVR Overview Multicast VLAN Registration (MVR) is designed for applications (such as M edia-on-Demand (MoD)) that use multicast traffi c across an Ethe rnet ring-based servic e provider network. MVR allows one single multicast VLAN to be shared among dif ferent subscriber VLANs on the network.
ES-2048 User’s Guide 152 Chapter 19 Multicast 19.5.3 How MVR Wo rks The following f igure shows a multicast television example where a subscriber device (such as a computer) in VLAN 1 receives multicast traffic from the streaming media server , S , via the switch.
ES-2048 User’s Guide Chapter 19 Multicast 153 Figure 63 MVR.
ES-2048 User’s Guide 154 Chapter 19 Multicast The following table describes the re lated labels in this screen. Table 42 MVR LABEL DESCRIPTION Active Se lect this check box to enable MVR to allow one single multicast VLAN to be shared among different subscrib er VLANs on the netwo rk.
ES-2048 User’s Guide Chapter 19 Multicast 155 19.7 MVR Group Configuration All source ports and receiver ports belonging to a multicast group can receive multicast data sent to this multicast group. Configure MVR IP multicast group address(es) in the Group Configuration screen.
ES-2048 User’s Guide 156 Chapter 19 Multicast 19.7.1 MVR Conf iguration Example The following figure shows a network example wh ere ports 1, 2 and 3 on the switch belong to VLAN 1.
ES-2048 User’s Guide Chapter 19 Multicast 157 Figure 66 MVR Configuration Example T o set the switch to forward the multicast group traffic to the su bscribers, configure multicast group settings in the Gr oup Configuration screen.
ES-2048 User’s Guide 158 Chapter 19 Multicast Figure 67 MVR Group Configuration Exampl e Figure 68 MVR Group Configuration Exampl e.
ES-2048 User’s Guide Chapter 2 0 DHCP Relay 159 C HAPTER 20 DHCP Relay This chapter shows you how to set up DHCP relay . 20.1 DHCP Relay Overview DHCP (Dynamic Host Configuration Protocol , RFC 2131 and RFC 2132) allows indiv idual clients to obtain TCP/IP configuration at st art-up from a DHCP serve r .
ES-2048 User’s Guide 160 Chapter 20 DHCP Relay Figure 69 DHCP Relay The following table describes the labels in this screen. Table 44 DHCP Relay LABEL DESCRIPTION Active Select this check box to enable DHCP relay . Remote DHCP Server 1 .. 3 Enter the IP address of a DHCP server in dotted decimal notation.
ES-2048 User’s Guide Chapter 21 Static Rout e 161 C HAPTER 21 S t atic Route This chapter shows you how to configure static routes. 21.1 Configure St atic Routing Stat ic routes tell the switch how to forwar d IP traffic when you configure the TCP/IP parameters manually .
ES-2048 User’s Guide 162 Chapter 21 Static Route Destination IP Address This parameter specifies the IP network add ress of the final destination. Routing is always based on network nu mber . If you need to specify a route to a single host, use a subnet mask of 255.
ES-2048 User’s Guide Chapter 22 DiffSer v Code Point 163 C HAPTER 22 DiffServ Code Point This chapter shows you how to configure Dif ferentiated Servi ces (Dif fServ) on the switch. 22.1 DiffServ Overview Quality of Service (QoS) is used to prioritize so urce-to-destination traffic flows.
ES-2048 User’s Guide 164 Chapter 22 DiffServ Code Po int Figure 72 DiffServ Network Exam ple Switch A marks traf fic flowing into the network based on the configured marking rules. Intermediary network devices 1 and 2 allocate network resources (such as bandwidth ) by mapping the DSCP values and the associated polic ies.
ES-2048 User’s Guide Chapter 22 DiffSer v Code Point 165 Figure 73 Dif fServ The following table describes the labels in this screen. Table 46 DiffServ LABEL DESCRIPTION Active Select this option to enable DiffServ on the switch. Port This field displays the index number of a port on the switch.
ES-2048 User’s Guide 166 Chapter 22 DiffServ Code Po int 22.3 DSCP-to-IEEE802.1p Priority Mapping Settings Y ou can configure the DSCP to IEEE802.1p mapp ing to allow the switch to prioritize all traffic based on the incoming D SCP value accord ing to the DiffServ to IEEE802.
ES-2048 User’s Guide Chapter 22 DiffSer v Code Point 167 Figure 74 DiffServ: DSCP Setting The following table describes the labels in this screen. Table 48 DiffServ: DSCP Setting LABEL DESCRIPTION 0 … 63 This is the DSCP classification identification number .
ES-2048 User’s Guide 168 Chapter 22 DiffServ Code Po int.
ES-2048 User’s Guide Chapter 23 Maintenance 169 C HAPTER 23 Maintenance This chapter explains how to configure the ma intenance screens that let you maintain the firmware and configuration files. 23.1 The Maintenance Screen Click Management , Maintenance in the navigation panel to open the following scre en.
ES-2048 User’s Guide 170 Chapter 23 Maintenance 23.2 Load Factory Default Follow the steps below to reset the sw itch back to the factory defaults. 1 In the Maintenance screen, click the Click Here button next to Load Factory Default to clear all switch configuration information yo u configured and return to the factory defaults.
ES-2048 User’s Guide Chapter 23 Maintenance 171 Note: Note: Clicking the Apply or Add b utton does NOT save the changes permanently . All unsaved changes are erased af ter you reboot the switch. 23.4 Reboot System Reboot System allows you to restart the switch withou t physically turning the power of f.
ES-2048 User’s Guide 172 Chapter 23 Maintenance Figure 78 Firmware Upg rade T ype the path and file name of the firmware f ile you wish to upload to the switch in the File Path text box or click Br owse to locate it. After you have specified the file, click Upgrade .
ES-2048 User’s Guide Chapter 23 Maintenance 173 Back up your current switch config uration to a computer using the Back up Configur ation screen. Figure 80 Backup Config uration Follow the steps below to back up the current switch configuration to your computer in this screen.
ES-2048 User’s Guide 174 Chapter 23 Maintenance 23.8.1.1 Example FTP Commands ftp> put firmware.bin ras This is a sample FTP session showing the transfer of the computer file "firmware.bin" to the switch. ftp> get config config.cfg This is a sample FTP session saving the current configuration to a file called “config.
ES-2048 User’s Guide Chapter 23 Maintenance 175 23.8.3 GUI-based FTP Clients The following table describes some of the commands that you may see in GUI-based FTP clients. 23.8.4 FTP Restrictions FTP will not work when: • FTP service is disabled in the Service Access Control screen.
ES-2048 User’s Guide 176 Chapter 23 Maintenance.
ES-2048 User’s Guide Chapter 24 Access Control 177 C HAPTER 24 Access Control This chapter describes how to control access to the switch. 24.1 Access Control Overview A console port, T elnet, FTP , .
ES-2048 User’s Guide 178 Chapter 24 Access Control 24.3 About SNMP Simple Network Management Protocol (SNMP) is an application lay e r protocol used to manage and monitor TCP/IP-based devices. SNMP is used to exchange management information between th e network manag ement system (NMS) and a network element (NE).
ES-2048 User’s Guide Chapter 24 Access Control 179 24.3.1 Supported MIBs MIBs let administrators collect statisti c s and monitor status and performance.
ES-2048 User’s Guide 180 Chapter 24 Access Control 24.3.3 Configuring SNMP From the Access Control screen, display the SNMP screen. Y ou can click A ccess Control to go back to the Access C ontrol screen. Figure 83 Access Control: SNMP The following table describes the labels in this screen.
ES-2048 User’s Guide Chapter 24 Access Control 181 Note: It is highly recommended tha t you change the default administrator p assword ( 1234 ). • A non-administrator (usernam e is something other than admin ) is someone who can view but not configure switch settings.
ES-2048 User’s Guide 182 Chapter 24 Access Control 24.5 SSH Overview Unlike T elnet or FTP , which transmit data in clear text, SSH (Secure Shell) is a secure communication protoc ol that combines authenticatio n and data encryption to provide secure encrypted communication between two hosts over an unsecured network.
ES-2048 User’s Guide Chapter 24 Access Control 183 Figure 86 How SSH W orks 1 Host Identification The SSH client s ends a conn ection request to the SSH server . The server identifies itself with a host key . The client encrypts a rand omly generated session key with the host key and server key and sends the result back to the server .
ES-2048 User’s Guide 184 Chapter 24 Access Control 24.7.1 Requirement s for Using SSH Y ou must install an SSH client pr ogram on a client computer (W indows or Linux operati ng system) that is used to co nnect to the switch over SSH.
ES-2048 User’s Guide Chapter 24 Access Control 185 24.9 HTTPS Example If you haven’t changed the default HTTPS port on the switch, then in your browser enter “https://switch IP Address/” as the web site address where “switch IP Address” is the IP address or domain name of the switch you wish to access.
ES-2048 User’s Guide 186 Chapter 24 Access Control Figure 89 Security Certificate 1 (Net scape) Figure 90 Security Certificate 2 (Net scape) 24.9.3 The Main Screen After you accept the certificat e an d enter the login username and password, the switch main screen appears.
ES-2048 User’s Guide Chapter 24 Access Control 187 Figure 91 Example: Lock Denoting a Secure Connection 24.10 Service Port Access Control Service Access Control allows you to decide what services you may use to access the switch.
ES-2048 User’s Guide 188 Chapter 24 Access Control Figure 92 Access Control: Service Access Control The following table describes th e fields in this screen. 24.1 1 Remote Management From the Access Control screen, display the Remote Management screen as shown next.
ES-2048 User’s Guide Chapter 24 Access Control 189 Figure 93 Access Control: Remote Management The following table describes the labels in this screen. Table 58 Access Control: Remote Management LABEL DESCRIPTION Entry This is the client set index number .
ES-2048 User’s Guide 190 Chapter 24 Access Control.
ES-2048 User’s Guide Chapter 25 Diagnostic 191 C HAPTER 25 Diagnostic This chapter explains the Diagnostic screen. 25.1 Diagnostic Click Management , Diagnostic in the naviga tion pane l to open th is screen. Use this screen to check system logs, ping IP addresses or perform port tests.
ES-2048 User’s Guide 192 Chapter 25 Diagnostic.
ES-2048 User’s Guide Chapter 26 Syslog 193 C HAPTER 26 Syslog This chapter explains the syslog screens. 26.1 Overview The syslog protocol allows devices to send event notification messages across an IP network to syslog servers that collect the event mes sages.
ES-2048 User’s Guide 194 Chapter 26 Syslog Figure 95 Syslog The following table describes the labels in this screen. 26.3 Syslog Server Setup Click Management and then Syslog in the navigation pa nel to display the Syslog Setup screen. Click the Syslog Server Setup link to open the following screen.
ES-2048 User’s Guide Chapter 26 Syslog 195 Figure 96 Syslog: Server Setup The following table describes the labels in this screen. Table 62 Syslog: Server Setup LABEL DESCRIPTION Active Select this check box to have the device send logs to this syslog server.
ES-2048 User’s Guide 196 Chapter 26 Syslog.
ES-2048 User’s Guide Chapter 27 Clu ster Mana gement 197 C HAPTER 27 Cluster Management This chapter introduces cluster management. 27.1 Clustering Management S t atus Overview Cluster Managemen t allows you to manage s witches through one switch, called the cluste r manager .
ES-2048 User’s Guide 198 Cha pter 27 Cluster Management Figure 97 Clustering Application Example 27.2 Clustering Management S t atus Click Management , Cluster Management in the navigation panel to display the following screen. Note: A cluster can only have one manager .
ES-2048 User’s Guide Chapter 27 Clu ster Mana gement 199 Figure 98 Clustering Management: S tatus The following table describes the labels in this screen.
ES-2048 User’s Guide 200 Cha pter 27 Cluster Management Figure 99 Cluster Management: Cluster Me mber Web Con figurator Screen 27.2.1.1 Uploading Firmware to a Cluster Member Switch Y ou can use FTP to upload firmwa re to a cluster member switch through the cluster manager switch as shown in the following example.
ES-2048 User’s Guide Chapter 27 Clu ster Mana gement 201 Figure 100 Example: Uploading Firmware to a Clu ster Member Switch The following table explains some of the FTP parameters. 27.3 Clustering Management Configuration Click Configuration from the Clu ster Management screen to display the next screen.
ES-2048 User’s Guide 202 Cha pter 27 Cluster Management Figure 101 Clustering Manageme n t Configuration The following table describes the labels in this screen. Table 66 Clustering Mana gement Configuration LABEL DESCRIPTION Clustering Manager Active Select Active to have this switch become the cluster manager switch.
ES-2048 User’s Guide Chapter 27 Clu ster Mana gement 203 Apply Click Apply to save your changes to the switch’s run-time memory . The switch loses these chang es if it is turned off or loses power , so use the Save link on the top navigation panel to save your chang es to the non-volatile memory wh en you are done configuring.
ES-2048 User’s Guide 204 Cha pter 27 Cluster Management.
ES-2048 User’s Guide Chapter 28 MAC Table 205 C HAPTER 28 MAC T able This chapter introduces the MAC T able scre en. 28.1 MAC T able Overview The MAC T able screen (a MAC table is also known as a filtering database) shows how frames are forwarded or filtered across the switch’ s ports.
ES-2048 User’s Guide 206 Chapter 28 MAC Table 28.2 V iewing the MAC T able Note: Click MAC, VID or Port in the Sort by field to display the MAC address en tries.
ES-2048 User’s Guide Chapter 29 ARP Table 207 C HAPTER 29 ARP T able This chapter introduces ARP T able. 29.1 ARP T able Overview Address Resolution Protocol (ARP) is a prot ocol for mapping an Internet Protocol address (IP address) to a physical machine address, al so known as a Media Access Control or MAC address, on the local area network.
ES-2048 User’s Guide 208 Chapter 29 ARP Table Figure 104 ARP T able The following table describes the labels in this screen. Table 68 ARP Table LABEL DESCRIPTION Index This is the ARP T a ble entry number . IP Address This is the learned IP address of a device connecte d to a switch port with corresponding MAC address below .
ES-2048 User’s Guide Chapter 30 Config ure Clone 209 C HAPTER 30 Configure Clone This chapter shows you how you can copy the settings of one port onto other ports. 30.1 Configure Clone Settings Cloning allows you to co py the basic and advanced settings fro m a sour ce port to a destination port or ports.
ES-2048 User’s Guide 210 Chapter 30 Configure Clone Advanced Application Select which port settings (you configu red in the Advanced Ap plication menus) should be copied to the destination ports. Apply Click Apply to save your changes to the switch ’s run- time me mory .
ES-2048 User’s Guide Chapter 31 Intro ducing Comma nds 211 C HAPTER 31 Introducing Commands This chapter introduces commands and gives a summary of commands available. 31.1 Overview In addition to the web con figurator , you can use commands to configure the switch.
ES-2048 User’s Guide 212 Chapter 3 1 Introducing Commands 31.2.1.1 Initial Screen When you turn on your switch, it performs several internal tests as well as line initialization. Y ou can view the initialization in formation using the console port .
ES-2048 User’s Guide Chapter 31 Intro ducing Comma nds 213 means that the contact and location fields are optional. • “Command” refers to a co mmand used in the command line interface (CI command). • The | symbol means “or” . • The entry <cr> in the command lines refers to carriage return.
ES-2048 User’s Guide 214 Chapter 3 1 Introducing Commands Syntax: logins username <username> password <password> logins username <username> privilege <0-14> where 31.7 Command Modes There are three command modes: User , Enable and Configur e .
ES-2048 User’s Guide Chapter 31 Intro ducing Comma nds 215 Enter exit to quit from the current mo de or enter logout to exit the comm and interpreter . 31.8 Getting Help The system includes a help faci lity to provi de you with the following information about the commands: • List of available commands under a command group.
ES-2048 User’s Guide 216 Chapter 3 1 Introducing Commands 31.8.1 List of A vailable Commands Enter “ help ” to displa y a list of a vailable co mma nds and the corresponding su b commands. Enter “ ? ” to display a list of comman d s you can use.
ES-2048 User’s Guide Chapter 31 Intro ducing Comma nds 217 Enter <command> ? to display detailed help inform ation about the sub commands and parameters. 31.9 Using Command History The switch keeps a list of recently used commands availa ble to you for reuse.
ES-2048 User’s Guide 218 Chapter 3 1 Introducing Commands • Use the same configuration file to set all switches (of the same model) in your network to the same settings. Note: Y ou may also edit a configuration file using a text editor . Make sure you use valid commands.
ES-2048 User’s Guide Chapter 31 Intro ducing Comma nds 219 31.1 1.2 Enable Mo de The following table describes the co mmands available for Enable mode. <IP|host-name> [vlan <vlan-id>] [size <0-1472>] [-t] Sends Ping request to an Ethernet device in the specified VLAN(s) with the specifie d param eters.
ES-2048 User’s Guide 220 Chapter 3 1 Introducing Commands udp Displays UDP related informa tion. 13 route Displays IP routing information. 13 route static Displays IP static route information. 13 hardware-monitor <C|F> Displays current hardware monitor info rmation with the specified temperature unit (Celsius C or Fahre nheit F).
ES-2048 User’s Guide Chapter 31 Intro ducing Comma nds 221 interfaces config <port- list> Displays current inte rface configuration on the port(s). 13 bandwidth- control Displays bandwidth control settings on the port(s). 13 egress Displays outgoing port information on the port(s).
ES-2048 User’s Guide 222 Chapter 3 1 Introducing Commands session Displays current SSH session(s). 13 https Displays the HTTPS information. 13 session Displays current HTTPS session(s). 13 certificate Displays the HTTPS certificates. 13 key <rsa|dsa> Displays the HTTPS key .
ES-2048 User’s Guide Chapter 31 Intro ducing Comma nds 223 interface port- channel <port- list> [bandwidth- limit...] Resets to the factory def a ult settings on a per port basis and optiona lly on a per feat ure configuration basi s. 13 baudrate <1|2|3|4|5> Changes the console port speed.
ES-2048 User’s Guide 224 Chapter 3 1 Introducing Commands 31.1 1.3 General Configuration Mode The following table lists the commands in Configuration (or Config) mode.
ES-2048 User’s Guide Chapter 31 Intro ducing Comma nds 225 profile <name> start-address <ip> end- address <ip> Deletes a rule in the IGMP filteri ng profile.
ES-2048 User’s Guide 226 Chapter 3 1 Introducing Commands port-access- authenticator Disables port authentication on the switch. 13 <port-list> Disables authentication on the listed ports. 13 <port-list> reauthenticate Disables the re-authenticati on mechanism on th e listed port(s ).
ES-2048 User’s Guide Chapter 31 Intro ducing Comma nds 227 vlan-stacking Disables VLAN stacking on the switch. 13 ssh key <rsa1|rsa|dsa> Disables the secure shell server encryption key . Y our switch supports SSH versions 1 and 2 using RSA and DSA authentication.
ES-2048 User’s Guide 228 Chapter 3 1 Introducing Commands unknown- multicast-frame <drop|flooding> Sets how to treat traffic from unknown multicast group. 13 reserved- multicast-group <drop|flooding> Sets how to treat traffic belonging to reserved multicast groups.
ES-2048 User’s Guide Chapter 31 Intro ducing Comma nds 229 inactive Disables a static MAC address forwarding rule. 13 mac-filter name <name> mac <mac-addr> vlan <vlan-id> drop <src/dst/both> Configures a static MAC address port filtering rule.
ES-2048 User’s Guide 230 Chapter 3 1 Introducing Commands mode <priority|roun d-robin> S pecifies the mode for RADIUS server selection. 13 port- access- authentica tor Enables 802.1x authentication o n the switch. 13 <port-list> Enables 802.
ES-2048 User’s Guide Chapter 31 Intro ducing Comma nds 231 <port-list> path-cost <1- 65535> Sets the STP p ath cost for a specified port. 13 <port-list> priority <0-255> Sets the priority for a specified port. 13 help Displays help info rmation.
ES-2048 User’s Guide 232 Chapter 3 1 Introducing Commands [contact <system contact>] [location <system location>] Sets the geographic location and the name of the person in charge of this switch. 13 logins username <name> password <pwd> Configures a default (read-o nly) account.
ES-2048 User’s Guide Chapter 31 Intro ducing Comma nds 233 31.1 1.4 interface port-channel Commands The following table lists the interface port-channel commands in configuration mode.
ES-2048 User’s Guide 234 Chapter 3 1 Introducing Commands egress set <port-list> Sets th e outgoing tra ffic po rt list for a port-based VLAN. 13 igmp-immediate- leave Enables IGMP immediate leave o n the port. 13 igmp-filtering profile <name> Sets the IGMP filtering profile for this port.
ES-2048 User’s Guide Chapter 31 Intro ducing Comma nds 235 cir Enables the guaranteed ba ndwidth limits for incoming traf fic on the port(s). 13 cir <Kbps> Sets the guaranteed bandwidth allowed for incoming traffic on the port(s). 13 pir Enables bandwidth limits allowed for incoming traffic on the port(s).
ES-2048 User’s Guide 236 Chapter 3 1 Introducing Commands bpdu-control <peer|tunnel|di scard|network> Sets h ow Bridge P rotocol Data Units (BPDUs) are used in STP port st ates. 13 no egress set <port-list> Disables the outg oing traffic port list for a port-based VLAN.
ES-2048 User’s Guide Chapter 31 Intro ducing Comma nds 237 31.1 1.5 config-vlan Commands The following table lists the vlan commands in configuration mode. help Displays a description of the interface port-channel commands. 13 exit Exits from the interface port- channel command mode.
ES-2048 User’s Guide 238 Chapter 3 1 Introducing Commands 31.1 1.6 mvr Comm ands The following table lists the mvr commands in configuration mode. inactive Disables the specified VLAN. 13 help Displays a list of a vailable VLAN commands. 13 no fixed <port- list> Sets fixed port( s) to normal po rt(s).
ES-2048 User’s Guide Chapter 31 Intro ducing Comma nds 239 Table 76 mvr Commands COMMAND DESCRIPTION PRIVILEGE mvr <1- 4094> Enters the MVR (Multicast VLAN Registration) configuration mode. 13 source-port <port-list> Sets the source port(s).
ES-2048 User’s Guide 240 Chapter 3 1 Introducing Commands.
ES-2048 User’s Guide Chapter 32 User and Enab le Mode Commands 241 C HAPTER 32 User and Enable Mode Commands This chapter describes some commands which yo u can perform in the User and Ena ble modes. 32.1 Overview The following command examples show how you can use User and Enab le mode s to diagnose and manage you r switch.
ES-2048 User’s Guide 242 Ch apter 32 Use r and Enable Mod e Commands 32.2.2 show ip Syntax: show ip This command displays the IP re lated information (such as IP address and subnet mask) on all switch interfaces. The following figure shows th e default interface settings.
ES-2048 User’s Guide Chapter 32 User and Enab le Mode Commands 243 This command displays statistics of a port. The following ex ample shows that po rt 2 is up and the related information.
ES-2048 User’s Guide 244 Ch apter 32 Use r and Enable Mod e Commands This command displays the MAC address(es) st ored in the switch. The following example shows the static MAC address table.
ES-2048 User’s Guide Chapter 32 User and Enab le Mode Commands 245 where This command displays information about the route to an Ethernet device. The following example displays route information to an Ethernet device with an IP address of 192.168.1.
ES-2048 User’s Guide 246 Ch apter 32 Use r and Enable Mod e Commands where An example is shown next. • Copy all att ributes of port 1 to port 2 • Copy selected attributes (active, ba ndwidth limit and STP settings) to ports 5-8 32.6 Configuration File Maintenance The following sections show how to manage th e configuration files.
ES-2048 User’s Guide Chapter 32 User and Enab le Mode Commands 247 Note: When you use the write memory command without specifying a configuration file index number , the switch saves the changes t o the configuration file the switch is currently usin g.
ES-2048 User’s Guide 248 Ch apter 32 Use r and Enable Mod e Commands.
ES-2048 User’s Guide Chapter 33 C onfigurat ion Mode Co mmands 249 C HAPTER 33 Configuration Mode Commands This chapter describes how to enable and config ure your switc h’ s feat ures using commands. For more background information, see the f eature specific chapters which proceed the commands chapters.
ES-2048 User’s Guide 250 Chapter 33 Configu ration Mode Com mands An example is shown next. • Enable IGMP snooping on the switch. • Set the host-timeout and leave-timeout values to 30 seconds • Set the switch to drop packet s from unknown multicast groups.
ES-2048 User’s Guide Chapter 33 C onfigurat ion Mode Co mmands 251 33.3 Enabling STP Use the spanning-tree commands to en able and co nfigure STP on the switch.
ES-2048 User’s Guide 252 Chapter 33 Configu ration Mode Com mands An exampl e using spanning-tree command is shown next. • Enable STP on the switch. • Set the bridge priority of the switch to 0. • Set the Hello T ime to 4, Maximum Age to 20 and Forward Delay to 15 on the switch.
ES-2048 User’s Guide Chapter 33 C onfigurat ion Mode Co mmands 253 33.4.2 Resetting Commands Use the no command to reset switch setti ngs to their default values. Syntax: no https timeout Resets the https session timeout to default. An example is shown next.
ES-2048 User’s Guide 254 Chapter 33 Configu ration Mode Com mands 33.4.4.1 no trunk Syntax: no trunk <T1|T2|T3|T4|T5|T6> no trunk <T1|T2|T3|T4|T5|T6> lacp no trunk <T1|T2|T3|T4|T5|T6> interfa ce <port-list> where An example is shown next.
ES-2048 User’s Guide Chapter 33 C onfigurat ion Mode Co mmands 255 Figure 106 no port-access-authenticato r Command Example 33.4.4.3 no ssh Syntax: no ssh key <rsa1|rsa|dsa> no ssh known-hosts <host-ip> no ssh known-hosts <host-ip> [1024|s sh-rsa|ssh-dsa] where An example is shown next.
ES-2048 User’s Guide 256 Chapter 33 Configu ration Mode Com mands Syntax: spq wfq wrr fe-spq <Q0-Q7> where An example is shown next. • Set the queueing method to SPQ. 33.6 S tatic Route Commands Y ou can create and configure static r outes on the switch by using the ip route comma nd.
ES-2048 User’s Guide Chapter 33 C onfigurat ion Mode Co mmands 257 An example is shown next. • Create a static route with the destination IP address of 172.21.1.104, subnet mask of 255.255.0.0 and the gateway IP address of 1 92.168.1.2. • Assigns a metric value of 2 to the static route.
ES-2048 User’s Guide 258 Chapter 33 Configu ration Mode Com mands An example is shown next. • Create a filtering rule cal led “filter1”. • Drop packets coming from and going to MAC address 00:12 :00:12:00:12 on VLAN.
ES-2048 User’s Guide Chapter 33 C onfigurat ion Mode Co mmands 259 • Enable dynamic l ink aggregation (LACP) on trunk 1. 33.9 Enabling Port Authentication T o enable a port authentication, you need to specify your RADIUS server details and select the ports which require external authentication.
ES-2048 User’s Guide 260 Chapter 33 Configu ration Mode Com mands See Section 33.9.2 on page 2 60 for an example. 33.9.2 Port Authentication Settings Use the port-access-authenticator command to configure port security on the switch.
ES-2048 User’s Guide Chapter 33 C onfigurat ion Mode Co mmands 261 An example is shown next. • Specify RADIUS server 1 with IP address 10.10.10.1, port 1890 a nd the string secretKey as the password. See Section 33.9.1 on page 259 for more information on RADIUS server commands.
ES-2048 User’s Guide 262 Chapter 33 Configu ration Mode Com mands.
ES-2048 User’s Guide Chapter 34 Interfa ce Commands 263 C HAPTER 34 Interface Commands These are some commonly used configur ation commands that belong to the interface group of commands . 34.1 Overview The interface commands allow you to configur e the switch on a port by port basis.
ES-2048 User’s Guide 264 Chapter 34 Inte rface Comm ands where An example is shown next. • Enable ports 1, 3, 4 and 5 for configuration. • Set the BPDU control to tunnel , to forward BPDUs received on ports one, three, four and five. 34.2.3 broadcast-limit Syntax: broadcast-limit broadcast-limit <pkt/s> where An example is shown next.
ES-2048 User’s Guide Chapter 34 Interfa ce Commands 265 Syntax: bandwidth-limit bandwidth-limit pir <Kbps> bandwidth-limit cir <Kbps> bandwidth-limit egress <Kbps> where An example is shown next. • Enable port one for config uration.
ES-2048 User’s Guide 266 Chapter 34 Inte rface Comm ands • Enable port mirroring. • Enable the monitor port 3. • Enable ports 1, 4, 5 and 6 for configuration. • Enable port mirroring on the ports. • Enable port mirroring for outgoi ng traffic.
ES-2048 User’s Guide Chapter 34 Interfa ce Commands 267 • Enable ingress checking on the interface. 34.2.8 frame-type Syntax: frame-type <all|tagged|untagged> where An example is shown next. • Enable ports one, three, four an d five for configuration.
ES-2048 User’s Guide 268 Chapter 34 Inte rface Comm ands • Set the queue weights from Q0 to Q7. 34.2.10 egress set Syntax: egress set <port-list> where An example is shown next. • Enable port-based VLAN tagging on the switch. • Enable ports one, three, four an d five for configuration.
ES-2048 User’s Guide Chapter 34 Interfa ce Commands 269 34.2.12 name Syntax: name <port-name-string> where An example is shown next. • Enable ports one, three, four an d five for configuration.
ES-2048 User’s Guide 270 Chapter 34 Inte rface Comm ands An example is shown next. • Select ports 3-6 for internal loopback test. • Execute the test command.
ES-2048 User’s Guide Chapter 35 IEEE 802.1Q Tagg ed VLAN Commands 271 C HAPTER 35 IEEE 802.1Q T agged VLAN Commands This chapter describes the IEEE 802.1Q T agged VLAN and associated commands. 35.1 Configuring T agged VLAN The following procedur e shows you how to configure tagg ed VLAN.
ES-2048 User’s Guide 272 Chapter 35 IEEE 802.1Q Tagged VLAN Commands 35.2 Global VLAN1Q T agged VLAN Configuration Commands This section shows you how to configure and monitor the IEEE 802.1Q T agged VLAN. 35.2.1 GARP St atus Syntax: show garp This command shows the switch’ s GARP timer se ttings, including the join, leave and leave all timers.
ES-2048 User’s Guide Chapter 35 IEEE 802.1Q Tagg ed VLAN Commands 273 Switches join VLANs by making a declaration. A declaration is made by issuing a Join message using GARP . Declarations are withdraw n by issuing a Leave message. A Leave All message terminates all registrations.
ES-2048 User’s Guide 274 Chapter 35 IEEE 802.1Q Tagged VLAN Commands 35.3.1 Set Port VID Syntax: pvid <VID> where This command sets the default VLAN ID on the port(s).
ES-2048 User’s Guide Chapter 35 IEEE 802.1Q Tagg ed VLAN Commands 275 35.3.4 Modify St atic VLAN Use the following commands in the config-vla n mode to configure the static VLAN table.
ES-2048 User’s Guide 276 Chapter 35 IEEE 802.1Q Tagged VLAN Commands 3 The switch notes what the SVLAN table say s (that is, the SVLAN tells the switch whether or not to forward a frame and if the forwarde d frames shoul d have tags). 4 Then the switch applies the port filter to finish the forwar ding decision.
ES-2048 User’s Guide Chapter 35 IEEE 802.1Q Tagg ed VLAN Commands 277 35.5 Disable VLAN Syntax: vlan <vlan-id> inactive This command disables the specified VLAN ID in the SVLAN (S tatic VLAN) table. 35.6 Show VLAN Setting Syntax: show vlan This command shows the IEEE 802.
ES-2048 User’s Guide 278 Chapter 35 IEEE 802.1Q Tagged VLAN Commands.
ES-2048 User’s Guide Chapter 36 Multicast VLAN Registration Commands 279 C HAPTER 36 Multicast VLAN Registration Commands This chapter shows you how to use Mu lticast VLAN Registration (mvr) commands. 36.1 Overview Use the mvr commands in the co nfiguration mode to create and configure multicast VLANs.
ES-2048 User’s Guide 280 C hapter 36 Multic ast VLAN Registratio n Commands • Enter MVR mode. Create a multicast VLAN with the name multiVlan and the VLAN ID of 3. • Specify source ports 2, 3, 5 and receiv er ports 6-8. • Specify dynamic mode for the multicast group.
ES-2048 User’s Guide Chapter 37 Troubleshooting 281 C HAPTER 37 T roubleshooting This chapter covers potential problems and possible remedies. 37.1 Problems St arting Up the Switch 37.
ES-2048 User’s Guide 282 Chapter 37 Troublesh ooting 37.2.1 Pop-up Windows, Ja vaScript s and Java Permissions In order to use the web configurator you need to allow: • W eb browser pop-up windows fro m your device. • JavaScripts (enabled by default).
ES-2048 User’s Guide Chapter 37 Troubleshooting 283 Figure 108 Intern et Options 3 Click Apply to save this setting. 37.2.1.1.2 Enable pop-up Blockers with Exceptions Alternatively , if you only want to allow pop-up windows from your device, see the follo wing steps.
ES-2048 User’s Guide 284 Chapter 37 Troublesh ooting Figure 109 Internet Options 3 T ype the IP address of your device (the web page that you do not want to have blocked) with the prefix “http://”. For example, http://192.168.1.1. 4 Click Add to move the IP address to the list of Allowed sites .
ES-2048 User’s Guide Chapter 37 Troubleshooting 285 Figure 1 10 Pop-up Blocker Settings 5 Click Close to return to the Privacy screen. 6 Click Apply to save this setting. 37.2.1.2 JavaScript s If pages of the web configura tor do not display properly in Internet Explorer, check that JavaScripts are allowed.
ES-2048 User’s Guide 286 Chapter 37 Troublesh ooting Figure 1 1 1 Internet Options 2 Click the Custom Level... button. 3 Scroll down to Scripting . 4 Under Active scripting make sure that Enable is selected (the default). 5 Under Scripting of Java applets make sure that Enable is sele cted (the default).
ES-2048 User’s Guide Chapter 37 Troubleshooting 287 Figure 1 12 Security Settings - Java Scripting 37.2.1.3 Java Permissions 1 From Internet Explorer , click To o l s , Internet Options and then the Security tab. 2 Click the Custom Level... button. 3 Scroll down to Microsoft VM .
ES-2048 User’s Guide 288 Chapter 37 Troublesh ooting Figure 1 13 Security Settings - Java 37.2.1.3.1 JA V A (Sun) 1 From Internet Explorer , click To o l s , Internet Options and then the Advanced tab. 2 make sure that Use Java 2 for <applet> u nder Java (Sun) is selected.
ES-2048 User’s Guide Chapter 37 Troubleshooting 289 Figure 1 14 Java (Sun) 37.3 Problems with the Password Table 79 Troubleshootin g the Password PROBLEM CORRECTIVE ACTION Cannot access the switch. The password field is case se nsitive. Make sure that you enter the correct password using the proper casing.
ES-2048 User’s Guide 290 Chapter 37 Troublesh ooting.
ES-2048 User’s Guide Appendix A Product Specifications 291 A PPENDIX A Product S pecifications These are the switch product specifications. Table 80 General Product Specifications Ethernet Interface 48 10/100 Base-T X interfaces Auto-negotiation Auto-MDI/MDIX Compliant with IEEE 802.
ES-2048 User’s Guide 292 Table 81 Manageme nt Specif ications System Control Alarm /S tatus surveillance LED indication for al arm and system status Performance monitoring Line speed Four RMON group.
ES-2048 User’s Guide Appendix A Product Specifications 293 Safety UL 60950-1 CSA 60950-1 EN 60950-1 IEC 60950-1 EMC FCC Pa rt 15 (Class A) CE EMC (Class A) Table 82 Physical and Environmental Specif.
ES-2048 User’s Guide 294.
ES-2048 User’s Guide Appendix B IP Addresses an d Subnetting 295 A PPENDIX B IP Addresses and Subnetting This appendix introduces IP addresses, IP address classes and subnet masks. Y ou use subnet masks to subdivid e a network in to smaller logical networks.
ES-2048 User’s Guide 296 The following table shows the network number and host ID arrangement for classes A, B and C. An IP address with host IDs of all zeros is the IP address of the n etwork (192.168. 1.0 for example). An IP address with host IDs of all ones is the broadcast address for that network (192.
ES-2048 User’s Guide Appendix B IP Addresses an d Subnetting 297 Subnet Masks A subnet mask is used to dete rmine which bits are part of th e network number , and which bits are part of the host ID (using a logical AND operation). A subnet mask has 32 bits.
ES-2048 User’s Guide 298 The first mask shown is the class “C” natural m ask. Normally if no mask is specified it is understood that the natura l mask is being used. Example: T wo Subnet s As an example, you have a class “C” address 1 92.168.
ES-2048 User’s Guide Appendix B IP Addresses an d Subnetting 299 Host IDs of all zeros represent the subnet itsel f and host IDs of all ones are the broadcast address for that subnet, so the actual number of hosts available on each subnet in the example above is 2 7 – 2 or 126 h o sts for each subnet.
ES-2048 User’s Guide 300 Example Eight Subnet s Similarly use a 27-bit mask to create eight subnets (000, 001, 010 , 01 1, 100, 101, 1 10 and 111 ) . Subnet Address: 192.1 68.1.0 Low est Host ID: 192.168.1.1 Broadcast Address: 192.168.1.63 Highest Host ID: 192.
ES-2048 User’s Guide Appendix B IP Addresses an d Subnetting 301 The following table shows class C IP ad dress last octet values for each subnet. The following table is a summary for class “C” subnet planning. Subnetting With Class A and Class B Networks.
ES-2048 User’s Guide 302 The following table is a summary for class “B” subnet planning. Table 96 Class B Subnet Planning NO. “BORROWED” HOST BIT S SUBNET MASK NO. SUBNETS NO. HOSTS PER SUBNET 1 255.255.128.0 (/17) 2 32766 2 255.255.192.0 (/18) 4 16382 3 255.
ES-2048 User’s Guide Index 303 Index Symbols “standby” ports 125 Numerics 802.1P priority 79 A access control limitation 177 login account 180 remote management 188 service port 187 SNMP 178 acc.
ES-2048 User’s Guide 304 Index summary 218 syntax conventions 212 user mode details 218 using history 217 vlan mode det ails 237 commands interface mode details 233 configuration change running conf.
ES-2048 User’s Guide Index 305 LEDs 45 GMT (Greenwich Mean Time) 71 GVRP 82 , 90 and port assignment 90 GVRP (GARP VLAN Registration Protocol) 82 , 266 gvrp disable 273 gvrp enable 273 gvrp status 2.
ES-2048 User’s Guide 306 Index current configuration 169 main screen 169 management Management Information Ba se (MIB) 178 management interface, See also CLI management port 42 , 94 , 97 MIB and SNM.
ES-2048 User’s Guide Index 307 Q queue weight 142 queuing 29 , 141 SPQ 142 WFQ 142 WRR 142 queuing algo rithm 141 , 144 queuing method 141 , 144 R rack mounting 38 RADIUS 131 advantages 131 network example 131 server 131 settings 133 setup 133 RADIUS (Rem ote Authentication Dial In User Service) 131 Rapid S panning Tree Protocol (RSTP).
ES-2048 User’s Guide 308 Index root port 106 status 107 terminology 105 STP (S panning T ree Protocol) 30 subnet 295 subnet mask 297 subnetting 297 switch accessing problems 281 lockout 53 switch lo.
ES-2048 User’s Guide Index 309 W warnings 4 warranty 6 note 6 web configurator getting help 56 help 56 home 48 loggin g out 56 login 47 navigation panel 49 screen summary 50 weight, queuing 142 Weig.
An important point after buying a device ZyXEL Communications ES-2048 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought ZyXEL Communications ES-2048 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data ZyXEL Communications ES-2048 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, ZyXEL Communications ES-2048 you will learn all the available features of the product, as well as information on its operation. The information that you get ZyXEL Communications ES-2048 will certainly help you make a decision on the purchase.
If you already are a holder of ZyXEL Communications ES-2048, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime ZyXEL Communications ES-2048.
However, one of the most important roles played by the user manual is to help in solving problems with ZyXEL Communications ES-2048. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device ZyXEL Communications ES-2048 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
