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Configuring the Overload Bit for an IS-IS Device
If an IS-IS device needs to be temporarily isolated, configure the IS-IS device to enter the overload state to prevent other devices from forwarding traffic to this IS-IS device and prevent blackhole routes.
Pre-configuration Tasks
Before configuring the overload bit for an IS-IS device, complete the following task:
Procedure
- Run system-view
The system view is displayed.
- Run isis [ process-id ]
The IS-IS view is displayed.
- Run set-overload [ on-startup [ timeout1 | start-from-nbr system-id [ timeout1 [ timeout2 ] ] | wait-for-bgp [ timeout1 ] ] [ route-delay-distribute timeout4 ] [ send-sa-bit [ timeout3 ] ] ][ allow { interlevel | external }* ]
The overload bit for non-pseudonode LSPs is configured.
- Run commit
The configuration is committed.