R0106-HP MSR Router Series Layer 3 - IP Routing Configuration Guide(V7)

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Verifying the configuration
After Router A establishes adjacencies with Router B and Router C, they begin to exchange routing
information.
# Restart the IS-IS process on Router A.
<RouterA> reset isis all 1 graceful-restart
Reset IS-IS process? [Y/N]:y
Router A enters the restart state and sends connection requests to its neighbors through the GR
mechanism to synchronize the LSDB.
# Check the IS-IS GR state on Router A.
<RouterA> display isis graceful-restart status
Restart information for IS-IS(1)
--------------------------------
Restart status: COMPLETE
Restart phase: Finish
Restart t1: 3, count 10; Restart t2: 60; Restart t3: 300
SA Bit: supported
Level-1 restart information
---------------------------
Total number of interfaces: 1
Number of waiting LSPs: 0
Level-2 restart information
---------------------------
Total number of interfaces: 1
Number of waiting LSPs: 0
IS-IS NSR configuration example
Network requirements
As shown in Figure 47, Router S, Router A, and Router B belong to the same IS-IS routing domain.
• Run IS-IS on all the routers to interconnect them with each other.
• Enable IS-IS NSR on Router S to ensure forwarding continuity between Router A and Router B when
an active/standby switchover occurs on Router S.
Figure 47 Network diagram
Configuration procedure
1. Configure the IP addresses and subnet masks for interfaces on the routers. (Details not shown.)