The avoid-microloop segment-routing rib-update-delay command sets a delay in delivering IS-IS routes in Segment Routing.
The undo avoid-microloop segment-routing rib-update-delay command deletes a delay in delivering IS-IS routes in Segment Routing.
By default, the delay in delivering routes in Segment Routing is 5000 ms.
Usage Scenario
If a network fault occurs or is rectified, an IGP performs route convergence. A transient forwarding status inconsistency between nodes results in different convergence rates on devices, which poses the risk of micro-loops. After anti-micro loop is enabled for Segment Routing, the ingress forwards packets strictly along an explicit path during IGP convergence. The forwarding is irrelevant to IGP convergence of devices, which prevents loops. To set a delay in delivering IS-IS/OSPF routes in Segment Routing, run the avoid-microloop segment-routing rib-update-delay command.
Precautions
After the avoid-microloop segment-routing command is enabled, route convergence is delayed according to the time configured by the avoid-microloop segment-routing rib-update-delay command. During the route convergence delay, data traffic is forwarded according to the strict label stack.
<HUAWEI> system-view [~HUAWEI] segment-routing [*HUAWEI-segment-routing] quit [*HUAWEI] isis 1 [*HUAWEI-isis-1] cost-style wide [*HUAWEI-isis-1] segment-routing mpls [*HUAWEI-isis-1] avoid-microloop segment-routing rib-update-delay 6000