Validating And Troubleshooting Cisco Ios Xr Software Configuration; Local And Global Configurations - Cisco CRS-1 - Carrier Routing System Router Troubleshooting Manual

Chapter 1 General Troubleshooting
Validating and Troubleshooting Cisco IOS XR Software
Configuration
Validating the Cisco IOS XR software configuration includes collecting configuration information on
the router to determine configuration changes and verifying the current running configuration. When a
configuration fails during a commit, the failed configuration can be viewed to help determine why the
configuration was not committed.
The following sections are provided:
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Local and Global Configurations

Configuration data is split between global (shared) and local configurations. Configurations are held
locally to the appropriate node. For example, the system configuration is distributed to the node it
belongs on. The routing protocol configurations that are shared for all nodes are part of the SysDB shared
plane running on the dLRSC RP node.
The local plane configurations, such as interface-specific configuration, belong to the local plane SysDB
running on each node. Every node has a data store containing the local data for that node (local plane),
including configuration and operational data for the local interfaces. There is also a data store containing
the shared data (shared plane) which is primarily used by RP and DRP applications, but accessible to all
nodes.
Each SysDB item is categorized as either 'local' or 'shared'. Local data is that primarily of interest to a
single node and shared data is everything else. Since almost all line card usage involves only local data,
their SysDB clients only use their local server which minimizes remote inter-process communication
(IPC).
When troubleshooting configurations, you need to determine whether the problem is local or shared
(global). To view the local configuration, use the show running-config interface * command.
RP/0/RP0/CPU0:router# show running-config interface *
interface Bundle-Ether28
bundle minimum-active bandwidth 1000000
bundle minimum-active links 1
ipv4 address 10.12.28.1 255.255.255.0
description Connected to P2_CRS-8 Bundle-Ether 28
!
interface Bundle-Ether28.1
dot1q vlan 29
ipv4 address 10.12.29.1 255.255.255.0
description Connected to P2_CRS-8 Bundle-Ether 28.1
.
.
.
interface Bundle-POS24
bundle minimum-active bandwidth 2488320
bundle minimum-active links 1
ipv4 address 10.12.24.1 255.255.255.0
description Connected to P2_CRS-8 Bundle-POS 24
OL-21483-02
Local and Global Configurations, page 1-35
Collecting Configuration Information, page 1-37
Verifying the Running Configuration, page 1-38
Using the show configuration failed Command, page 1-47

Validating and Troubleshooting Cisco IOS XR Software Configuration

Cisco IOS XR Troubleshooting Guide for the Cisco CRS-1 Router
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