Cisco Systems Cisco IOS XR manual Connecting and Communicating with the Router

Chapter 4 Configuring General Router Features

Connecting and Communicating with the Router

SDRs perform routing functions in the same manner as a physical router, but share some chassis resources with the rest of the system. For example, the applications, configurations, protocols, and routing tables assigned to an SDR belong to that SDR only, but other functions, such as chassis control, switch fabric, and partitioning, are shared with the rest of the system.

To manage the owner SDR, you must connect to the active RP for the owner SDR. In administration configuration mode, you can define new SDRs and assign resources to them (such as DRPs, MSCs, and line cards.) In configuration mode, you can configure the operation of the owner SDR. Although you can reassign cards from one SDR to another, you cannot configure and manage cards assigned to a named SDR. To manage cards assigned to a named SDR, you must connect to the appropriate named SDR.

When you manage a named SDR, you must connect to the active RP for that named SDR. You can connect to the named SDR using any of the connection methods you use for the owner SDR (for example, you can connect through the console port or the Management Ethernet interface), and you have control over only the cards assigned to that named SDR. For example, you cannot configure and manage interfaces on line cards assigned to the owner SDR or other SDRs unless you connect directly to those SDRs.

Note Cisco IOS XR Software releases 2, 3, and 3.2 support only one SDR on the Cisco CRS-1 router. Cisco IOS XR Software Release 3.2 supports multiple SDRs on Cisco XR 12000 Series Routers, and Cisco IOS XR Software Release 3.3 supports multiple SDRs on the Cisco CRS-1 routers and Cisco XR 12000 Series Routers. For more information, see Cisco IOS XR System Management Configuration Guide.

Connecting and Communicating with the Router

To manage or configure a router running the Cisco IOS XR software, you must first connect to the router using a terminal or a PC. Before you connect to the router, you must determine which router entity you want to manage. You can manage the following router entities:

•Owner SDR. Connect to the designated shelf controller (DSC).

•Router or multishelf system hardware. Connect to the DSC.

•Named SDR. For Cisco CRS-1 routers, connect to the RP or DRP that serves as the designated SDR system controller (DSDRSC) for that named SDR. For Cisco XR 12000 Series Routers, connect to the RP that serves as the DSDRSC for that named SDR.

Connections are made either through a direct physical connection to the Console port of the DSC or DSDRSC or from a remote location using a modem or an Ethernet connection that leads to the DSC or

DSDRSC.

•Figure 4-1shows the RP connections on the Cisco CRS-1 16-Slot Line Card Chassis (LCC), and Figure 4-2shows the RP connections on the Cisco CRS-1 4-Slot and 8-Slot LCCs.

•Figure 4-3shows the DRP PLIM connections.

•Figure 4-4shows the performance route processor 2 (PRP-2) connections for a Cisco XR 12000 Series Router.

Cisco IOS XR Getting Started Guide

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