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Cisco 1721 Hardware Installation Manual

Chapter 1
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Cisco 1721 Router Overview
This chapter introduces the Cisco 1721 router, also referred to in this guide as the
router, and covers the following topics:
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Key Features
Back Panel Ports and LEDs
Front Panel LEDs
Router Memory
Unpacking the Router
Additional Required Equipment
C H A P T E R
Cisco 1721 Router Hardware Installation Guide
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Summary of Contents for Cisco 1721

  • Page 1 Cisco 1721 Router Overview This chapter introduces the Cisco 1721 router, also referred to in this guide as the router, and covers the following topics: Key Features • Back Panel Ports and LEDs • Front Panel LEDs • Router Memory •...

  • Page 2: Key Features

    Ethernet and Fast Ethernet LANs over one to four WAN connections to regional and central offices. features of the router. Figure 1-1 Cisco 1721 Router Cisco 1721 Router Hardware Installation Guide Figure 1-1) is a small, modular desktop router that P W R W IC 0...
  • Page 3 Router can be secured to a desktop or other surface using Kensington lockdown equipment. You can set up networks that include the Cisco 1721 router using the Cisco ConfigMaker application, a wizards-based software tool that helps you easily configure and address Cisco routers, access servers, hubs, switches, and networks.

  • Page 4: Back Panel Ports And Leds

    Connector/Slot Label/Color Ethernet port 10/100 ETHERNET (yellow) Auxiliary port (black) Console port CONSOLE (blue) Cisco 1721 Router Hardware Installation Guide and described in Table 1-2 Console port WIC 1 slot CONSOLE LINK 10/100 ETHERNET 10/100-Mbps Ethernet port Auxiliary port Description Connects the router to the local Ethernet network through this port.

  • Page 5: Front Panel Leds

    On when the Ethernet link is up. On when the VPN hardware encryption module is installed and recognized by the IOS. On when a WIC is correctly inserted in the card slot. and described in Table 1-4. Cisco 1721 Router Hardware Installation Guide Front Panel LEDs...
  • Page 6 LED Label Color Green Green WIC0 ACT/CH0 Green ACT/CH1 Green Cisco 1721 Router Hardware Installation Guide WIC1 WIC0 ACT/CH0 ACT/CH0 ACT/CH1 ACT/CH1 Description On means that DC power is being supplied to the router. On means that the router has successfully booted up and the software is functional.

  • Page 7: Router Memory

    2-port card in the WIC1 slot. Blinks when there is network activity on the Ethernet port. Blinks when there are packet collisions on the local Ethernet network. Cisco 1721 Router Hardware Installation Guide Router Memory Appendix C,...

  • Page 8: Types Of Memory

    Amounts of Memory The Cisco 1721 router supports a maximum of 32MB Flash memory and 128MB DRAM. Use the show version command to view the amount of DRAM, NVRAM, and Flash memory stored in your router. The following example of the show version command output displays the amount of memory in this router.

  • Page 9: Unpacking The Router

    Chapter 1 Cisco 1721 Router Overview 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. X.25 software, Version 3.0.0. 1 Ethernet/IEEE 802.3 interface(s) 1 FastEthernet/IEEE 802.3 interface(s)
  • Page 10 When You Use It A hub connects pieces of network equipment (including the Cisco 1721 router) to create a network. You can use a 10-, 100-, or 10/100-Mbps hub with the Cisco 1721 router. A switch connects pieces of network equipment (including the Cisco 1721 router) to create a network.

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