Cisco Systems SMC-127 manual Information About Configuring Secure Domain Routers, SMC-129

Configuring Secure Domain Routers on Cisco IOS XR Software

Information About Configuring Secure Domain Routers

Information About Configuring Secure Domain Routers

Review the following topics before configuring secure domain routers:

•What Is a Secure Domain Router?, page SMC-129

•Owner SDR and Administration Configuration Mode, page SMC-129

•Non-Owner SDRs, page SMC-130

•SDR Access Privileges, page SMC-130

–Root-System Users, page SMC-130

–root-lr Users, page SMC-131

–Other SDR Users, page SMC-131

•Designated Secure Domain Router System Controller (DSDRSC), page SMC-132

–DSCs and DSDRSCs in a Cisco CRS-1 Router, page SMC-132

–DSC and DSDRSCs in a Cisco XR 12000 Series Router, page SMC-133

•High Availability Implications, page SMC-136

•Cisco IOS XR Software Package Management, page SMC-137

•DSC Migration on Cisco CRS-1 Multishelf Systems, page SMC-138

•Caveats, page SMC-139

What Is a Secure Domain Router?

Cisco routers running Cisco IOS XR software can be partitioned into multiple, independent routers known as secure domain routers (SDRs). SDRs are a means of dividing a single physical system into multiple logically separated routers. SDRs perform routing functions the same as a physical router, but they share resources with the rest of the system. For example, the software, configurations, protocols, and routing tables assigned to an SDR belong to that SDR only, but other functions, such as chassis-control and switch fabric, are shared with the rest of the system.

Owner SDR and Administration Configuration Mode

The owner SDR is created at system startup and cannot be removed. This owner SDR performs system-wide functions, including the creation of additional non-ownerSDRs. You cannot create the owner SDR because it always exists, nor can you completely remove the owner SDR, because it is necessary to manage the router. By default, all nodes in the system belong to the owner SDR.

The owner SDR also provides access to the Administration EXEC and Administration configuration modes. Only users with root-system privileges can access the Administration modes by logging in to the primary Route Processor for the owner SDR (called the Designated Shelf Controller, or DSC).

Administration modes are used for the following purposes:

•Create and remove additional non-owner SDRs

•Assign nodes to the non-owner SDRs

•View the configured SDRs in the system.

•View and manage system-wide resources and logs.

Cisco IOS XR System Management Configuration Guide

SMC-129