avoid-microloop te-tunnel rib-update-delay

Format

avoid-microloop te-tunnel rib-update-delay rib-update-delay

undo avoid-microloop te-tunnel rib-update-delay

Parameters

Parameter	Description	Value
rib-update-delay	Specifies a delay in delivering the IS-IS routes whose outbound interface is a TE tunnel interface.	The value is an integer ranging from 100 to 30000, in milliseconds.

Parameter

Description

Value

rib-update-delay

Specifies a delay in delivering the IS-IS routes whose outbound interface is a TE tunnel interface.

The value is an integer ranging from 100 to 30000, in milliseconds.

Views

IS-IS view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
isis	write

Usage Guidelines

Usage Scenario

If a network fault occurs, IGP convergence is triggered. In this case, a transient forwarding status inconsistency may occur among nodes because of their different convergence rates, which poses the risk of microloops. If the outbound interface of a route before IGP convergence is a shortcut TE tunnel interface and the IS-IS TE tunnel anti-microloop function is enabled, the outbound interface of the route remains unchanged during the IGP convergence. In this case, traffic is forwarded through a hot standby TE tunnel, and the forwarding process does not depend on IGP convergence on each device, preventing microloops. To configure a switchback delay (delay in delivering the IS-IS routes whose outbound interface is a TE tunnel interface), run the avoid-microloop te-tunnel rib-update-delay command.

Example

# Set the delay in delivering the IS-IS routes whose outbound interface is a TE tunnel interface to 6000 ms.

<HUAWEI> system-view
[~HUAWEI] isis 1
[*HUAWEI-isis-1] avoid-microloop te-tunnel
[*HUAWEI-isis-1] avoid-microloop te-tunnel rib-update-delay 6000