Enabling NSR for ISIS-SPB


[IMPORTANT: ]

IMPORTANT:

Graceful Restart and IS-IS NSR are mutually exclusive. You cannot use both features on the device.


To use NSR for ISIS-SPB, an IRF fabric must have a minimum of two member devices.

NSR ensures nonstop services when ISIS-SPB has redundant processes on multiple IRF member devices. In contrast to Graceful Restart, NSR does not require a neighbor device to recover routing information.

NSR backs up SPBM link state information from the active ISIS-SPB process to the standby ISIS-SPB process. The standby ISIS-SPB process takes over when any of the following events occurs:

To enable NSR for ISIS-SPB:

Step

Command

Remarks

1. Enter system view.

system-view

N/A

2. Enter SPBM view.

spbm

N/A

3. Enable NSR for ISIS-SPB.

non-stop-routing

By default, NSR is disabled for ISIS-SPB.