Instruction/ maintenance manual of the product 1721 Cisco Systems
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CH A P T E R 1-1 Cisco 1721 Router Hardwa re Installation Guide 78-13834-02 1 Cisco 1721 Router Overview This chapter introduces the Cisco 1721 router, also referred to in th is guide as the r outer ,.
Chapter 1 Cisco 1721 Router Overview Key Features 1-2 Cisco 1721 Router Hardware Installation Guide 78-13834-02 Key Features The Cisco 1721 rout er (see Figure 1-1 ) is a small, modul a r desktop router that links small- to medi um-size remote Ethernet an d Fast Et hernet LANs o ver one to four W AN connections to re gional and central of fices.
1-3 Cisco 1721 Router Hardwa re Installation Guide 78-13834-02 Chapter 1 Cisco 1721 Router Overview Key Features T able 1 -1 Ke y Featur es Feature Description One Fa st Ethernet (10/100B ASE-TX) port • Operates in full- o r half-duple x mode (with manual ov erride av ailable).
Chapter 1 Cisco 1721 Router Overview Back Pane l Ports and LEDs 1-4 Cisco 1721 Router Hardware Installation Guide 78-13834-02 Back Panel Ports and LEDs This section descri bes the router back panel ports and LEDs, wh ich are shown in Figure 1-2 and descr ibed in Ta b l e 1 - 2 and Ta b l e 1 - 3 .
1-5 Cisco 1721 Router Hardwa re Installation Guide 78-13834-02 Chapter 1 Cisco 1721 Router Overview Front Panel LEDs Use the back panel LEDs during router installation to conf irm that you ha ve correctly connected all th e ca bles to the router .
Chapter 1 Cisco 1721 Router Overview Front Panel LEDs 1-6 Cisco 1721 Router Hardware Installation Guide 78-13834-02 Figur e 1 -3 F ront P anel LEDs T able 1 -4 Front P anel LEDs LED Label Color Description PWR Green On means that DC power is being supplied to t h e router .
1-7 Cisco 1721 Router Hardwa re Installation Guide 78-13834-02 Chapter 1 Cisco 1721 Router Overview Router Memory Router Memory This section descri bes the types of memory stored in th e router and ho w to f ind out ho w much of each type of memory is stored in the router .
Chapter 1 Cisco 1721 Router Overview Router Memory 1-8 Cisco 1721 Router Hardware Installation Guide 78-13834-02 Types of Memory The Cisco 1721 rout er has the following types of mem ory: • Dynamic random-access memory (DRAM)—This is the main storage memory for the rout er .
1-9 Cisco 1721 Router Hardwa re Installation Guide 78-13834-02 Chapter 1 Cisco 1721 Router Overview Unpacking the Route r cisco 1721 (MPC860P) processor (revision 0x101) with 36864K/12288K bytes of memory. Processor board ID VEN0539000D (3033334544), with hardware revision 0000 MPC860P processor: part number 5, mask 2 Bridging software.
Chapter 1 Cisco 1721 Router Overview Additional Required Eq uipment 1-10 Cisco 1721 Router Hardware Installation Guide 78-13834-02 T able 1 -6 Additional Requir ed Equipment Equipment When Y ou Use It Ethernet hub A hub connects pieces of netw ork equipment (including the Cisco 1721 router) to create a netwo rk.
An important point after buying a device Cisco Systems 1721 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Cisco Systems 1721 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 Cisco Systems 1721 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Cisco Systems 1721 you will learn all the available features of the product, as well as information on its operation. The information that you get Cisco Systems 1721 will certainly help you make a decision on the purchase.
If you already are a holder of Cisco Systems 1721, 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 Cisco Systems 1721.
However, one of the most important roles played by the user manual is to help in solving problems with Cisco Systems 1721. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Cisco Systems 1721 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
