Example For Configuring Is-Is Gr - Huawei Quidway NetEngine80E Configuration Manual

HUAWEI NetEngine80E/40E Router
Configuration Guide - IP Routing

7.24.13 Example for Configuring IS-IS GR

This part provides an example for implementing nonstop packet forwarding when master-slave
switchover occurs on the device that runs IS-IS.
Networking Requirements
In the network shown in
Network interconnection is implemented through IS-IS and the GR mechanism is provided.
After IS-IS adjacencies are set up between Router A, Router B, and Router C, the three routers
start to exchange routing information. When IS-IS on Router A restarts, Router A resends
connection requests to neighbors to synchronize the LSDB.
Figure 7-16 Networking diagram for configuring IS-IS GR
RouterA
Configuration Roadmap
The configuration roadmap is as follows:
1.
2.
Data Preparation
To complete the configuration, you need the following data:
l
l
Issue 02 (2014-09-30)
isis enable 64
isis cost 5
mpls
mpls ldp
#
interface GigabitEthernet2/0/0
undo shutdown
ip address 10.1.13.1 255.255.255.252
isis enable 64
isis cost 5
mpls
mpls ldp
#
return
Figure
GE1/0/0
10.1.1.1/24
Configure GR in the IS-IS views of all the routers.
Set the same restart interval in the IS-IS views of all the routers.
IS-IS process number
Restart interval
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7-16, Router A, Router B, and Router C belong to the same AS.
GE1/0/0
GE2/0/0
10.1.1.2/24
10.2.1.1/24
RouterB
7 IS-IS Configuration
GE1/0/0
RouterC
10.2.1.2/24
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