6.5.6 Checking the Configuration
After configuring IPv4 IS-IS route selection, run the following commands to verify that the
configurations are correct.
Procedure
l Run the display isis route [ process-id | vpn-instance vpn-instance-name ] [ ipv4 ]
[ verbose | [ level-1 | level-2 ] | ip-address [ mask | mask-length ] ]
*
command to check IS-
IS routing information.
l Run the display isis lsdb [ { level-1 | level-2 } | verbose | { local | lsp-id | is-name symbolic-
name } ]
*
[ process-id | vpn-instance vpn-instance-name ] command to check information
in the IS-IS LSDB.
----End
6.6 Configuring IPv4 IS-IS Route Summarization
To improve the route searching efficiency and simplify route management on a large-scale IS-
IS network, configure IS-IS route summarization to reduce the number of IS-IS routes in a
routing table.
Context
Route summarization is used to summarize routes with the same IP prefix into one route.
On a large-scale IS-IS network, route summarization can be configured to reduce the number
of IS-IS routes in a routing table. This summarization improves the usage of system resources
and facilitates route management.
If a link on an IP network segment that is summarized frequently alternates between Up and
Down states, IP network segments that are not summarized will not be affected, preventing route
flapping and improving the network stability.
Procedure
Step 1 Run:
system-view
The system view is displayed.
Step 2 Run:
isis [ process-id ]
The IS-IS view is displayed.
Step 3 Run:
summary ip-address mask [ avoid-feedback | generate_null0_route | tag tag |
[ level-1 | level-1-2 | level-2 ] ]
*
The specified IS-IS routes are summarized into one IS-IS route.
S6700 Series Ethernet Switches
Configuration Guide - IP Routing 6 IS-IS Configuration
Issue 01 (2012-03-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
265
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