Is-Is Nsr Configuration Example - HP 6125XLG Layer 3 - Ip Routing Configuration Manual

Verifying the configuration
After Switch A establishes adjacencies with Switch B and Switch C, they begin to exchange routing
information. Restart IS-IS on Switch A, which enters the restart state and sends connection requests to its
neighbors through the GR mechanism to synchronize the LSDB. To display the IS-IS GR status on Switch
A, use the display isis graceful-restart status command.
# Restart the IS-IS process on Switch A.
<SwitchA> reset isis all 1 graceful-restart
Reset IS-IS process? [Y/N]:y
# Check the GR status of IS-IS on Switch A.
<SwitchA> display isis graceful-restart status
Restart status: COMPLETE
Restart phase: Finish
Restart t1: 3, count 10; Restart t2: 60; Restart t3: 300
SA Bit: supported
Total number of interfaces: 1
Number of waiting LSPs: 0
Total number of interfaces: 1
Number of waiting LSPs: 0

IS-IS NSR configuration example

Network requirements
As shown in
IS-IS on all the switches to interconnect them with each other. Enable IS-IS NSR on Switch S to ensure
forwarding continuity between Switch A and Switch B when an active/standby switchover occurs on
Switch S.
Figure 45 Network diagram
Configuration procedure
1. Configure the IP addresses and subnet masks for interfaces on the switches. (Details not shown.)
Restart information for IS-IS(1)
--------------------------------
Level-1 restart information
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Level-2 restart information
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Figure 45, Switch S, Switch A, and Switch B belong to the same IS-IS routing domain. Run
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