185
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 48, Switch S, Switch A, and Switch B belong to the same IS-IS routing domain.
Run 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 48 Network diagram
Configuration procedure
1. Configure the IP addresses and subnet masks for interfaces on the switches. (Details not
shown.)
2. Configure IS-IS on the switches to make sure Switch S, Switch A, and Switch B can
communicate with each other at Layer 3 and dynamic route update can be implemented among
them with IS-IS. (Details not shown.)
3. Enable IS-IS NSR on Switch S.
<SwitchS> system-view
[SwitchS] isis 1
[SwitchS-isis-1] non-stop-routing
[SwitchS-isis-1] return
Verifying the configuration
# Reoptimize process placement on Switch S to trigger an active/standby switchover.
<SwitchS> system-view
[SwitchS] placement reoptimize
Predicted changes to the placement
Program Current location New location
---------------------------------------------------------------------
syslog 0/0 0/0
diagusageratio 0/0 0/0
l3vpn 0/0 0/0
fc 0/0 0/0
dns 0/0 0/0
lauth 0/0 0/0
aaa 0/0 0/0
lsm 0/0 0/0
rm 0/0 0/0
rm6 0/0 0/0
Loop 0
22.22.22.22/32
Vlan-int100
12.12.12.1/24
Vlan-int100
12.12.12.2/24
Vlan-int200
14.14.14.2/24
Vlan-int200
14.14.14.1/24
Loop 0
44.44.44.44/32
Switch S
Switch A
Switch B
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