3Com MSR 50 Series Configuration Manual page 914

914 C 57: IS-IS C
HAPTER ONFIGURATION
Network diagram
Figure 268 Network diagram for IS-IS-based GR configuration
GR restarter
Eth1/0
10.0.0 .2/24
Router B
GR helper
Configuration Procedure
1 Configure IP addresses of the interfaces on each router and configure IS-IS.
Follow Figure 268 to configure the IP address and subnet mask of each interface
on the router. The configuration procedure is omitted.
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. The configuration procedure is omitted here.
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 and therefore are omitted
here.
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 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 Router A.
# Restart 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
Restart information for IS-IS(1)
Router A
Eth1/0
10 .0.0.1/24
Eth1/0
10 .0.0.3/24
Router C
GR helper