wtr

Function

The wtr command sets the WTR time of a BFD session.

The undo wtr command restores the default WTR time of a BFD session.

By default, the WTR time is 0, indicating that the status change of a BFD session is reported immediately.

wtr wtr-value

undo wtr

Parameter	Description	Value
wtr-value	Specifies the WTR time of a BFD session.	The value is an integer that ranges from 1 to 60, in minutes. The default value is 0.

BFD session view

2: Configuration level

Usage Scenario

When a BFD session flaps, the WTR time prevents frequent active/standby switchovers of the application associated with the BFD session.

Precautions

If the WTR time is set, the system reports the BFD session Up event to the upper-layer application only after the WTR timer expires. Other status change events are reported immediately, which are not affected by the WTR time.
Both ends must use the same WTR time. Otherwise, when the session status changes at one end, applications at both ends detect different BFD session status.
If the WTR time is set and a BFD session goes Down within the WTR time, the Down Count value is recorded, but the Last Up Time and Last Up Lasting Time values are not recorded.

# Set the WTR time of a BFD session to 10 minutes.

<HUAWEI> system-view
[HUAWEI] bfd atoc
[HUAWEI-bfd-session-atoc] wtr 10