H3C Technologies H3C S12500 Series Switches - Manual (Page 196)

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Figure 68 Network diagram
Configuration procedure
1. Configure the IP addresses and subnet masks for interfaces. (Details not shown.)
2. Configure IS-IS on the switches to make sure that Switch A, Switch B, and Switch C can
communicate with each other at layer 3 and dynamic route update can be implemented among
them with IS-IS. (Details not shown.)
3. Configure IS-IS Graceful Restart:
# Enable IS-IS Graceful Restart on Switch A and configure the Graceful Restart Interval.
<SwitchA> system-view
[SwitchA] isis 1
[SwitchA-isis-1] graceful-restart
[SwitchA-isis-1] graceful-restart interval 150
[SwitchA-isis-1] return
# Configure Graceful Restart on Switch B and Switch C in the same way as Switch A. (Details not
shown.)
4. Verify 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 into 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
Switch A.
# Restart the IS-IS process on Switch A.
<SwitchA> reset isis all 1
Warning : Reset ISIS process? [Y/N]:y
# Check the Graceful Restart status of IS-IS on Switch A.
<SwitchA> display isis graceful-restart status
Restart information for IS-IS(1)
--------------------------------------------------------------------
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