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Фрагмент инструкции
Cisco Systems, Inc. All rights reserved. Important Information Important Information This section contains information about the following hardware and software requirements: • Router Information • Cisco IOS Software Requirements • Product Overview Router Information For hardware installation and maintenance information on Cisco 12000 Series Routers, refer to the installation and configuration guide for your router. This includes information on card slot locations and other general requirements. Supported Platforms The GRP operates on all Cisco 12000 series Internet Routers with the following requirements: • Cisco 12016 and Cisco 12416—GRP plugs into slot 7 in the upper card cage. If the router is equipped with an optional, redundant GRP, it must be installed in the far left slot of the lower card cage (slot 8). • Cisco 12410—GRP plugs into slot 9. If the router is equipped with an optional, redundant GRP, it must be installed in slot 8. • Cisco 12406—GRP plugs into any slot; however, slot 5 is recommended. If the router is equipped with an optional, redundant GRP, it can be installed in any of the remaining five slots. • Cisco 12404—GRP plugs into any of the five slots in the card cage, but slot 0 (zero) is the recommended slot for the first GRP. If the router is equipped with an optional, redundant GRP, it can be installed in any of the remaining slots. • Cisco 12012—GRP plugs into slot 0 in the upper card cage. In a dual GRP system, the second GRP is located in slot 11. This is the default factory configuration and is recommended to avoid heat- related problems. The far right slot labeled Alarm card is reserved for the alarm card. • Cisco 12008—GRP plugs into any slot in the upper card cage in the Cisco 12008 except the middle two slots (which are reserved for the CSC cards and labeled CSC 0 and CSC 1). GRP Redundancy When two GRPs are installed in a Cisco 12000 Series Router, one GRP is the active GRP, and the other is the backup, or standby GRP. If the active GRP fails or is removed from the system, the standby GRP detects the failure and initiates a switchover. During a switchover, the standby GRP assumes control of the router, connects with the network interfaces, and activates the local network management interface and system console. Note If your system includes redundant GRPs, both GRPs should have the same memory size. Redundancy is not supported when using a GRP and a PRP in the same chassis. Cisco strongly recommends that you avoid using mixed route processor cards to configure your router. Refer to the Route Processor Redundancy Plus for the Cisco 12000 Series Internet Router publication for more information on redundancy. 2 Important Information 78-4339-09 Product Overview Cisco IOS Software Requirements For software configuration information, refer to the Cisco IOS software configuration and command reference publications for the installed Cisco IOS Release. Also refer to the Cisco IOS software release notes for additional information. The GRP line card is supported in Cisco IOS Release 11.2(9)GS and later. GRP configurations with 512 MB of route memory are only compatible with Product Number GRP-B=. Cisco IOS Release 12.0(19)S or 12.0(19)ST or later and ROMMON Release 11.2 (181) or later are also required. The show version and show hardware commands display the current hardware configuration of the router, including the system software version that is currently loaded and running. For complete descriptions of show commands, see the Cisco IOS Configuration Fundamentals Configuration Guide and the Cisco IOS Configuration Fundamentals Command Reference. Related Documentation For additional information, refer to these publications: • Route Processor Redundancy Plus for the Cisco 12000 Series Internet Router • Cisco IOS Configuration Fundamentals Configuration Guide • Cisco IOS Configuration Fundamentals Command Reference • Cisco IOS Release 12.0S Release Notes for Cisco 12000 Series Internet Routers Product Overview Information about the Gigabit Route Processor (GRP), its components, functions, and features, and its use as the system processor for Cisco 12000 Series Routers is presented in the following sections. Figure 1 shows the front view of the GRP. Figure 1 Gigabit Route Processor (Front Panel, Horizontal Orientation) SLOT-0 GIGABIT ROUTE PROCESSOR SLOT-1 COLL LINK TX RX RJ-45 MII RESET AUX CONSOLE EJECT H10760 Note In order to maintain Class B EMI compliance, shielded cables must be used on the console and auxiliary ports of the GRP. An updated version of the GRP (Product Number GRP-B=, Rev. F0 and later) does not require shielded cables for Class B compliance. GRP Functions The primary functions of the GRP for Cisco 12000 Series Routers follow: • Loading the Cisco IOS software on all the installed line cards at power up • Providing a console (terminal) port for router configuration 78-4339-09 Cisco IOS Software Requirements 3 Product Overview • Providing an auxiliary port for other exte...
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