HP MSR Series Configuration Manual page 171

Figure 45 Network diagram
Configuration procedure
1. Configure IP addresses of the interfaces on each router and configure IS-IS:
Follow
(Details not shown.)
Configure IS-IS on the routers, ensuring that Router A, Router B, and Router C can communicate
with each other at Layer 3 and dynamic route update can be implemented among them with IS-IS.
(Details not shown.)
2. Configure IS-IS Graceful Restart:
# Enable IS-IS Graceful Restart on Router A and configure the Graceful Restart interval.
<RouterA> system-view
[RouterA] isis 1
[RouterA-isis-1] graceful-restart
[RouterA-isis-1] graceful-restart interval 150
[RouterA-isis-1] return
The configurations for Router B and Router C are similar. (Details not shown.)
3. Verify the configuration:
After Router A establishes adjacencies with Router B and Router C, they begin to exchange routing
information. Restart IS-IS on Router A, which enters the restart state and sends connection requests
to its neighbors through the Graceful Restart mechanism to synchronize the LSDB. Using the
display isis graceful-restart status command can display the IS-IS GR status on Router A.
# Restart the IS-IS process on Router A.
<RouterA> reset isis all 1
Warning : Reset ISIS process? [Y/N]:y
# Check the IS-IS Graceful Restart state on Router A.
<RouterA> display isis graceful-restart status
--------------------------------------------------------------------
IS-IS(1) Level-1 Restart Status
Restart Interval: 150
SA Bit Supported
Total Number of Interfaces = 1
Restart Status: RESTARTING
Number of LSPs Awaited: 3
T3 Timer Status:
Remaining Time: 140
Figure 45 to configure the IP address and subnet mask of each interface on the router.
Restart information for IS-IS(1)
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