Is-Is Nsr Configuration Example - HPE FlexNetwork HSR6800 Configuration Manual

Remaining Time: 59
IS-IS(1) Level-2 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
T2 Timer Status:
Remaining Time: 59

IS-IS NSR configuration example

Network requirements
Router S, Router A, and Router B belong to the same IS-IS routing domain as illustrated in
Enable IS-IS NSR on Router S to ensure correct routing when an active/standby switchover occurs
on Router S.
Figure 54 Network diagram
Configuration procedure
Configure IP addresses for the interfaces on each router and configure IS-IS:
1.
Follow
(Details not shown.)
Configure IS-IS on the routers, ensuring that Router S, Router A, and Router B can
communicate with each other at Layer 3, and dynamic route update can be implemented
among them with IS-IS. (Details not shown.)
Configure IS-IS NSR:
2.
# Enable IS-IS NSR on Router S.
<RouterS> system-view
[RouterS] isis 1
[RouterS-isis-1] non-stop-routing
[RouterS-isis-1] non-stop-routing interval 30
[RouterS-isis-1] return
Verify the configuration:
3.
After Router S establishes neighbor relationships with Router A and Router B, they start to
exchange routing information. After network convergence, perform an active/standby
switchover on Router S. During the switchover period, use the display isis peer command to
check the neighbor relationships between Router A and Router S and between Router B and
Router S; use the display isis route command to check if routes from Router A to the loopback
interface on Router B and from Router B to the loopback interface on Router A exist.
# Perform an active/standby switchover on Router S.
<RouterS> system-view
Figure 54 to configure the IP address and subnet mask of each interface on the routers.
168
Figure 54.