Instruction/ maintenance manual of the product 7757 3Com
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Copyright © 2006-2007, 3Com Corporation. Al l rights reserved. www.3Com.com Part Number: 10016396 Rev. AA Published: December 2007 3C OM S WITCH 7750 F AMIL Y Q UIC K R EF ERENCE G UIDE Overview This Quick Re ference Guide ap plies to the following Switch 7750 models.
1146 administrator-address 3Com Switch 7 750 Family Quick Reference Guide Displa ying Command P arameters At the prompt, enter the name of the command follo wed by a space and ? . For example: <sw7750 boot ? The following parameters are displayed: attribute-switch Exchange the file main-attribute and backup-attribute.
3Com Switch 7750 Family holdti me 1147 Quick Reference Guide holdtime Cluster view Use the holdtime command to configure th e holdtime of a switch. Use the undo holdtime command to restore the default holdtime value.
1148 acl 3Com Switch 7750 F amily Quick Reference Guide acl User interface vi ew Use the acl command to apply an ACL to filter Telnet users. Use the undo acl command to disable the switch from filtering Telnet users using t he ACL. acl mode System view Use the acl mode command to set the traffic classi fication mode for the device.
3Com Switch 7750 Family apply cost-type 1149 Quick Reference Guide apply cost-type Route policy view Use the apply cost-typ e command to set the routing cost type of routing information. Use the undo a pply cost-type command to cancel the setting argument.
1150 arp max-en try 3Com Switch 7750 F amily Quick Reference Guide arp max-entry System view Use the arp max-entry command to set the total maximum number of ARP entries.
3Com Switch 7750 Family ascii 1151 Quick Reference Guide ascii FTP client view Use the ascii command to specify that files be transferred in the ASCII mode. attack-protection System view Use the attack -protection command to set global Telnet protection .
1152 balance 3Com Switch 7750 Family Quick Reference Guide balance BGP view Use the balance command to configure B GP load balance. Use the undo balance command to cancel the load balance configuration. bgp System view Use the bgp command to enable BGP and enter the BGP view.
3Com Switch 7750 Family boot bootrom 1153 Quick Reference Guide boot bootrom User view Use the boot bootrom command to update the Boot ROM. boot bootrom default User view Use the boot bootrom default command to use the current start up file to upgrade the Boo t ROMs.
1154 cd 3Com Switch 7750 Family Quick Reference Guide cd FTP client view Use the cd c ommand to change the work dire ctory on the remote FTP server. cd SFTP Client view Use the cd c ommand to change the curre nt path on the remote SFTP server. If you did not specif y the remote-path argumen t, the current path is displayed.
3Com Switch 7750 Family compare-different-as -med 1155 Quick Reference Guide compare-different-as-med BGP view/BGP multicast addr ess family view Use the co mpare- diffe rent-as -med command to enable comparison of MED val ues from differ ent AS neighboring routes when de termining the best route.
1156 dampening 3Com Switch 7750 Family Quick Reference Guide dampening BGP view Use the dampening command to make BGP route at tenuation valid or modify various BGP route attenuation parameters. Use the undo dampening command to m ake the char acteristics inva lid.
3Com Switch 7750 Family default-cost 1157 Quick Reference Guide default-cost OSPF Area vi ew Use the default-cost c ommand to configure the cost of the defa ult route transmitted by OSPF to the STUB or NSSA area. Use the undo default-cost command to restore the default cost of the default route transmitted by OSPF to the STUB or N SSA area.
1158 dhcp relay information strategy 3Com Switch 7750 Family Quick Reference Guide dhcp relay information strategy System view Use the dhcp relay information strategy command to instruct a DHCP relay agent to perform specified operations to DHCP request pa ckets that carry option 82.
3Com Switch 7750 Family dhcp server nbns-lis t 1159 Quick Reference Guide dhcp server nbns-list System vie w, VLAN inte rface view Use the dhcp server nb ns-list command to configure WINS server IP address(es) for the specified DHCP interface add ress pool(s).
1160 dhcp-snoop ing informati on enable 3Com Switch 7750 F amily Quick Reference Guide dhcp-snooping information enable System view Use the dhc p-snooping information enable command to enable DHCP snooping Option 82. Use the undo dhc p-snooping information enable command to d isable DHCP snooping Option 82.
3Com Switch 7750 Family display acl remaining entry 1161 Quick Reference Guide display acl remaining entry Any view Use the display acl remaining e ntry slot command to display the remaini ng ACL entries on a specified slot.
1162 display bgp routing-table 3 Com Switch 7750 Fami ly Quick Reference Guide display bgp routing-table Any view Use the display bgp routing-table command to display all the BGP routing informatio n. display bgp routing-table as-path-acl Any view Use the display bgp routing-table as -path-acl command to view routes that match an as-path ac l.
3Com Switch 7750 Family display connection 1163 Quick Reference Guide display connection Any view Use the display con nection command to display information about the specified user connection or all user connections, so as to troubleshoot user connections.
1164 display dhcp-snoo ping vlan 3Com Switch 7 750 Family Quick Reference Guide display dhcp-snooping vlan Any view Use the display dhcp-snooping vlan command to display the IP-MAC ma pping relation s recorded by the DHCP-Snooping-enabled switch in the specified VLAN.
3Com Switch 7750 Family display gvrp statistics 1165 Quick Reference Guide display gvrp statistics Any view Use the display gvrp statistics command to display the GVRP statisti cs of specified or all trunk ports. display gvrp status Any view Use the display gvrp status command to display the global GVRP status (enabled or disabled).
1166 display ip interface 3Com Switch 7750 Family Quick Reference Guide display ip interface Any view Use the display ip interface command to display information about one specific or all interfaces. display ip ip-prefix Any view Use the display ip ip-prefix command to display an address prefix list.
3Com Switch 7750 Family display ipx routing-table 1167 Quick Reference Guide display ipx routing-table Any view Use the display ipx routing-table command to view the IP X routing information. display ipx service-table Any view Use the display ipx service-table command to view the contents of the I PX service infor mation table.
1168 display local-user 3Com Switch 7750 F amily Quick Reference Guide display local-user Any view Use the display local-user command to display information about a sp ecific or all local users, so as to troubleshoot local us er configuration.
3Com Switch 7750 Family display msdp peer-status 1169 Quick Reference Guide display msdp peer-status Any view Use the display msdp peer-status command to display the detailed in forma tion of the MSDP peer state. display msdp sa-cache Any view Use the display msdp sa-cache command to display (S, G) stat e learned from an M SDP peer.
1170 display ntdp 3Com Switch 7750 F amily Quick Reference Guide display ntdp Any view Use the display ntdp command to display the global NTDP inform at ion.
3Com Switch 7750 Family display ospf retrans-queu e 1171 Quick Reference Guide display ospf retrans-queue Any view Use the display ospf retrans-queue command to display the informati on about the OSPF retransmission queue. display ospf routing Any view Use the display ospf routing command to display the inform ation about OSPF routing table.
1172 display poe-profil e 3Com Switch 7750 F amily Quick Reference Guide display poe-profile Any view Use the display poe -profile command to display detailed configuration information of th e created PoE profile for a switch.
3Com Switch 7750 Family display qos-interfac e traf fic-bandwi dth 1173 Quick Reference Guide display qos-interface traffic-bandwidth Any view Use the display qos-interface traffic-bandwidth command to view the c onfiguration information about bandwidth guarantee.
1174 display rmon history 3Com Switch 7750 F amily Quick Reference Guide display rmon history Any view Use the display rmon history command to display the RMON history information about a specified port. The information about th e latest sample, including utilization, the numb er of errors, the tota l number of packets and so on, is also displayed.
3Com Switch 7750 Family display sn mp-a gent group 1175 Quick Reference Guide display snmp-agent group Any view Use the display snmp-agent group command to view group name, securi ty model, state of various views and storage models.
1176 display stp root 3Com Switch 7750 F amily Quick Reference Guide display stp root Any view Use the display stp root command to display information about th e root ports in th e MSTP region where the switch resides.
3Com Switch 7750 Family display udp statistic s 11 77 Quick Reference Guide display udp statistics Any view Use the display udp statistics command to view the statistics about UDP packets.
1178 dldp delaydown-timer 3Com Switch 7750 F amily Quick Reference Guide dldp delaydown-timer System view Use the dldp delaydown-timer command to set the delaydown timer. Use the undo dldp delaydown-timer command to restore the defa ult delaydown timer setting.
3Com Switch 7750 Family dot1x authentication-method 1179 Quick Reference Guide dot1x authentication-method System view Use the dot1x authentication-method command to set the 802.1x authentication meth od. Use the undo dot1x authentication-meth od command to revert to the default 802.
1180 dot1x version-check 3Com Switch 7750 F amily Quick Reference Guide dot1x version-check System view, Ethernet port view Use the dot1x version-che ck command to enable 802.1x client vers ion checking for specified Ethernet ports. Use the undo dot1x version-check command to disable 802.
3Com Switch 7750 Family filter-policy export 1181 Quick Reference Guide filter-policy export BGP view/BGP multicast addr ess family view Use the filter-policy export command to fil ter the advertised routes and onl y the routes passing the filter can be advertised by BGP.
1182 frequency 3Com Switch 7 750 Family Quick Reference Guide frequency NQA test group view Use the frequency command to co nfigure an automatic test interval. Use the undo frequency command to disable an automatic test. ftp User view Use the ftp command to establish a control connection with an FTP server and enter FTP client view.
3Com Switch 7750 Family gvrp 1183 Quick Reference Guide gvrp System view, Ethernet port view Use the gvrp command to enable GVRP g lobally (in system view) or for a port (in Ethernet port view). Use the undo gvrp command to disab le GVRP globally (in system view) or on a port (in Ethernet port v iew).
1184 hwtacacs scheme 3Com Switch 7750 Fami ly Quick Reference Guide hwtacacs scheme System view Use the hwtacac s scheme command to enter HWTACACS scheme view and create the specified HWTACACS scheme if it does not exist. Use the undo h wtacacs scheme command to delete an HWTACACS scheme.
3Com Switch 7750 Family igmp group-policy 1185 Quick Reference Guide igmp group-policy VLAN interface view Use the igmp group-policy command to set the filter of multicast groups on the VLAN interface to control the access to IP multicas t groups.
1186 igmp timer query 3Com Switch 7750 Family Quick Reference Guide igmp timer query VLAN interface view Use the igmp timer query command to configure the interval at wh ich a router interface sends IGMP query messages. Use the undo igmp timer query command to restore the default value.
3Com Switch 7750 Family igmp-snoopin g router-agi ng-time 1187 Quick Reference Guide igmp-snooping rout er-aging-time System view Use the igmp-snooping router-aging- time command to configure the agi ng time of the router port. Use the undo igmp-sn ooping router-aging-time command to restore the default aging time.
1188 info-center loghost 3Com Switch 7750 F amily Quick Reference Guide info-center loghost System view Use the info -center loghost command to enable information output to loghost by setting the IP address of the loghost. Use the undo info -center loghost command to cancel the configuration.
3Com Switch 7750 Family ip address 1189 Quick Reference Guide ip address VLAN inte rface view Use the ip address command to spec ify an IP address a nd subnet mask for the VLAN interface. Use the undo ip address command to remove the IP address an d subnet mask of the VLAN interface.
1190 ip netstream export source 3Com Switch 7750 F amily Quick Reference Guide ip netstream export source System view or Netstream aggre gation view Use the ip netstream export source command to configure the sourc e IP address of Netstream export packets, which will be used as the source address of UDP pa ckets.
3Com Switch 7750 Family ip userlog nat export host 1191 Quick Reference Guide ip userlog nat export host System view Use the ip userlog nat export host command to set the a ddress and port number of the global destination server for log packets.
1192 ipx rip mtu 3Com Switch 7750 Family Quick Reference Guide ipx rip mtu VLAN interface view Use the ipx rip mtu command to configure the IP X RIP update packet size.
3Com Switch 7750 Family ipx service 1193 Quick Reference Guide ipx service System view Use the ipx service command to add a static service entr y t o the service inf ormation table. Use the undo ipx service comma nd to delete a st atic service en try from the serv ice information t able.
1194 isis timer holding-multiplier 3Com Switch 7750 F amily Quick Reference Guide isis timer holding-multiplier Interface vi ew Use the isis timer holding-m ultiplier command to configure the number of invalid Hello packet s for an IS-IS neighbor.
3Com Switch 7750 Family lcd 1195 Quick Reference Guide lcd FTP client view Use the lcd co mmand to display the local wo rk directory on the FTP client. level Local user view Use the level command to set the priori ty level of the user . Use the undo level command to restore the default priority leve l of the user.
1196 logging-host 3Com Switch 7750 Family Quick Reference Guide logging-host Cluster view Use the logging-host command to configure a lo gging host on th e management device fo r the member devices in the cluster. Use the undo lo gging-host command to remove the public logging host for the member devices in the cluster.
3Com Switch 7750 Family mac-address mult icast interface 1197 Quick Reference Guide mac-address multicast interface System view Use the mac -address multicast command to manually add a mult icast MAC address entry. Use the undo mac -address multic ast command to remove a multicast MAC add ress entry.
1198 mac-authentication timer 3C om Switch 7750 Family Quick Reference Guide mac-authentication timer System view Use the mac-au thentication timer command to configure the timers used in centralized MAC address authenticatio n. Use the u ndo mac-authentication timer command to restore a time r to its default setting.
3Com Switch 7750 Family mirrorin g-group monitor-sl ot 1199 Quick Reference Guide mirroring-group monitor-slot System view Use the mirrorin g-group monitor-slot command to configure the dest ination mirroring I/O Module, which must be LS81VSNP or LS82VSNP.
1200 move 3Com Switch 7750 Family Quick Reference Guide move User view Use the move comman d to move a file to a spe cified director y. You can also assign a new name for the file. msdp System view Use the msdp comma nd to enable MSDP and enter M SDP view.
3Com Switch 7750 Family multicast-vlan subvlan 1201 Quick Reference Guide multicast-vlan subvlan System view Use the multicast -vlan subvlan command to configure one or m u ltiple VLANs as the sub-VLAN(s) of the multicast VLAN. Use the undo mu lticast -vlan subvlan command to cancel the sub-VLANs of the multicast VLAN.
1202 nat ftp server 3Com Switch 7750 F amily Quick Reference Guide nat ftp server VLAN interface view Use the nat ftp server command to configure a non-sta ndard internal FTP server. Use the undo nat ftp server command to remove a non-standard in ternal FTP server configuration.
3Com Switch 7750 Family network 1203 Quick Reference Guide network BGP view/BGP multicast address family view Use the network command to advertise the network segm ent route to the BGP routing table. Use the undo network command to cancel the existing configuration.
1204 ntp-service broadcast-cli ent 3Com Switch 7750 F amily Quick Reference Guide ntp-service broadcast-client VLAN interface view Use the ntp-service broadcast-client command to configure NTP broadcast client mode. Use the undo ntp-service broadcast-client command to disable NTP broadcast client mode.
3Com Switch 7750 Family originatin g-rp 1205 Quick Reference Guide originating-rp MSDP v iew Use the originating-rp command to allow MSDP peer to use t he specified interface IP address as the RP address in the SA message when the MSDP peer creates SA messages.
1206 packet-filter 3Com Switch 7750 Family Quick Reference Guide packet-filter parity User interface view Use the parity command to set the check mode of the user interface. Use the undo parity command t o revert to the defa ult check mode. passive FTP client view Use the passive comma nd to set the data transf er mode to the p assive mode.
3Com Switch 7750 Family peer default-route-advertise 1207 Quick Reference Guide peer default-route-advertise BGP view Use the peer default-route-advertise command to send the defaul t route to the peer group. Use the undo peer default-route-advertise command to cancel the send i ng of the default route to the peer group.
1208 peer public-as-only 3Com Switch 7750 Family Quick Reference Guide peer public-as-only BGP view/BGP mult icast address family view Use the peer public-as-only command to configure not to carry th e AS number when transmitti ng BGP update packets.
3Com Switch 7750 Family pim 1209 Quick Reference Guide pim Syst em view Use the pim command to en ter PIM view to configure the global PIM parameters. You cannot use the pim command to enable the PIM protocol. Use the undo pim command t o exit PIM view to system vi ew and clear the g loba l PIM configuration parameters.
1210 poe mode 3Com Switch 7750 F amily Quick Reference Guide poe mode Ethernet port view and Po E profile view Use the poe mode command to configure th e PoE mode on the current port. Use the undo poe mode command to restore the PoE mode on th e current port to the default mode.
3Com Switch 7750 Family port hybrid pvi d vlan 1211 Quick Reference Guide port hybrid pvid vlan Ethernet port view Use the port hybrid pvid vlan command to set the default VLAN ID for the hybrid port. Use the undo port hybrid pvid command to restore the default VLAN ID of the port.
1212 port-security authorization ignore 3Com Switch 7750 F amily Quick Reference Guide port-security authoriz ation ignore Ethernet port view Use the port-security authorization ignore command to configure the port to ignore th e authorization information deli vered by the RADIUS server.
3Com Switch 7750 Family prim ary accounting 1213 Quick Reference Guide primary accounting RADIUS scheme view Use the primary accounting command to set the IP address a nd port number of th e primary RADIUS accounting server.
1214 public-key-code end 3Com Switch 7750 Family Quick Reference Guide public-key-code end Public key edit view Use the public-key-code end command to return from public key edit view to public key view and save the public keys you set.
3Com Switch 7750 Family radius nas-ip 1215 Quick Reference Guide radius nas-ip System view Use the radius nas -ip command to set the source address used by the NAS to send RADIUS packets. Use the undo radius nas-ip command to restore the default setting.
1216 rename 3C om Switch 7750 Family Quick Reference Guide rename SFTP Client view Use the rename command to rename a specified file or directory on an SFTP server. reset RIP view Use the reset command to r eset the syst em c onfiguration parameters of RIP.
3Com Switch 7750 Family reset igmp group 12 17 Quick Reference Guide reset igmp group User view Use the reset igmp group command to delete an existing IGMP group from the V LAN interface.
1218 reset multica st routing-table 3Com Switch 7750 F amily Quick Reference Guide reset multicast routing-table User view Use the reset multicast routing -t able command to clear the routing entr ies in the multicast core routing table and remove the corr esponding forwarding entries in the MFC forwarding table.
3Com Switch 7750 Family rese t vrrp statistics 1219 Quick Reference Guide reset vrrp statistics User view Use the reset vrrp command to clear th e statistics inform ation about VRRP. retry RADIUS scheme view Use the retry command to set the maximum number of tran smission attempts of RADIUS requests.
1220 rip metricout 3Com Switch 7750 Family Quick Reference Guide rip metricout Interf ace view Use the rip metricout command to configure the addition al route metric added to the RIP routes to be transmitted on an i nterface. Use the undo rip metricout command to restore the default value of this additional route metric.
3Com Switch 7750 Family router id 1221 Quick Reference Guide router id System view Use the router id command to configure the ID of a BGP router. Use the undo router id command to cancel the rout er ID that has been set. rrpp domain System view Use the rrpp domain command to create an RRPP domai n and enter RRPP domain view.
1222 schedule reboot delay 3Com Switch 7750 F amily Quick Reference Guide schedule reboot delay User view Use the schedule reboot delay command to schedule a reboot on the switch, and set th e reboot waiting delay. Use the undo sc hedule reboot command to cancel the scheduled reboot.
3Com Switch 7750 Family set authentication password 1223 Quick Reference Guide set authentication password User i nterface view Use the set authentication password co mmand to set the local password. Use the undo set authentication password co mmand to remove the local password.
1224 slave restar t 3Com Switch 7750 Family Quick Reference Guide slave restart User view Use the slave resta rt command to restart the slave module. slave switchover User view Use the slave switcho ver command to perform master/s lave switchover manually .
3Com Switch 7750 Family snmp-agent pack et max-size 1225 Quick Reference Guide snmp-agent packet max-size System view Use the snmp-agent pac ket max-size command to set the maximum size of SNMP packet that the Agent can send/receive.
1226 speed 3Com Switch 7750 Family Quick Reference Guide speed Ethernet port view Use the speed command to set the port speed. Use the undo speed command to restore the port speed to the defa ult setting. speed auto Ethernet port view Use the speed auto [ 10 | 100 | 1000 ]* command to configure au t o-negotiation speed(s) fo r the current port.
3Com Switch 7750 Family ssh server rekey-inter val 1227 Quick Reference Guide ssh server rekey-interval System view Use the ss h server rekey-interval comman d to set the upd ate interval for the server ke y. Use the undo ss h server rekey-interval c ommand to cancel th e current configuration.
1228 stop-accounting-buffer enab le 3Com Switch 7750 F amily Quick Reference Guide stop-accounting-buffer enable RADIUS scheme view Use the stop-accou nting-buffer enable command to enable the switch to buffer the stop-accounting requests that bring no response.
3Com Switch 7750 Family stp interface edged- port 1229 Quick Reference Guide stp interface edged-port System view Use the stp interface edged-port enable command to configure the specified Ethernet port(s) as edge ports in system view.
1230 stp no-agreement-check 3Com Switch 7750 F amily Quick Reference Guide stp no-agreement-check Ethernet port view Use the stp no-agreement-check command to enable the rapid transition feature for a port. Use the stp no-agreement-check command to disable the rapid transit ion feat ure.
3Com Switch 7750 Family stp tc-protection threshold 1231 Quick Reference Guide stp tc-protection threshold System view Use the stp tc-protection threshold command to set the upper threshol d of the times for a switch to remove its MAC address table within 10 seconds.
1232 super password 3Com Switch 7 750 Family Quick Reference Guide super password System view Use the s uper password command to set the password for users to sw itch to a higher user level. To prevent unauthorized accesses, you can use th is command to require users to prov ide the password w hen they switch to a higher user level.
3Com Switch 7750 Family terminal trapping 1233 Quick Reference Guide terminal tr apping User view Use the terminal trapping command to enable terminal trap information display. Use the undo terminal trapping command to disable this function. test-enab le NQA test group view Use the test-enable command to execute a NQA test.
1234 timer lsp-refresh 3Com Switch 7750 Family Quick Reference Guide timer lsp-refresh IS-IS view Use the timer lsp-refresh command to set LS P updating period.
3Com Switch 7750 Family traffic-accounting traffic-group 1235 Quick Reference Guide traffic-accoun ting traffic-g roup System view Use the traffic-acco unting traffic-group command to create a traffic group or enter the view of an existing traffic group.
1236 udp-helper server 3Com Switch 7750 Family Quick Reference Guide udp-helper server VLAN interface view Use the udp-helper server command to specify a destination serv er for the UDP br oadcast packets to b e forwarded. Use the undo u dp-helper server command to remove a config ured destination server.
3Com Switch 7750 Family vlan 1237 Quick Reference Guide vlan Syst em view Use the vlan command to enter a VLAN view. If the V LAN identi fied by the vlan-id argument does not exist, this command creates the VLAN and then ent ers the VLAN view. Use the undo vlan command to remove a VLAN.
1238 voice vlan mac-address 3Com Switch 7750 F amily Quick Reference Guide voice vlan mac-address System view Use the voice vlan mac-address command to set an OUI addres s used for a voice VLAN t o identify vo ice devices. Use the undo voice vlan mac-address command to disable an OUI addre ss from being used to identify voice devices.
An important point after buying a device 3Com 7757 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought 3Com 7757 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 3Com 7757 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, 3Com 7757 you will learn all the available features of the product, as well as information on its operation. The information that you get 3Com 7757 will certainly help you make a decision on the purchase.
If you already are a holder of 3Com 7757, 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 3Com 7757.
However, one of the most important roles played by the user manual is to help in solving problems with 3Com 7757. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device 3Com 7757 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
