timer df-delay (BGP-EVPN address family view)

Function

The timer df-delay command specifies a DF election delay.

The undo timer df-delay command restores the default DF election delay.

By default, a DF election is performed after a delay of 60s.

timer df-delay seconds

undo timer df-delay seconds

undo timer df-delay

Parameter	Description	Value
seconds	Specifies a DF election delay.	The value is an integer ranging from 0 to 1200, in seconds.

Parameter

Description

Value

seconds

Specifies a DF election delay.

The value is an integer ranging from 0 to 1200, in seconds.

BGP-EVPN address family view

2: Configuration level

Task Name	Operations
bgp	write

Usage Scenario

In a dual-homing scenario where interface-based DF election is configured, the following commands must be run on each of two PEs:

Run the timer df-delay 0 command to prevent the long existence of dual backup devices during a switchback and therefore helps prevent a traffic interruption.
Run the evpn enhancement port command to prevent the access network from receiving duplicate traffic from the two PEs.

# Set a DF election delay to 10s.

<HUAWEI> system-view
[~HUAWEI] bgp 100
[*HUAWEI-bgp] l2vpn-family evpn
[*HUAWEI-bgp-af-evpn] timer df-delay 10