df-election-type

Use preference-based election for EVPN multihoming DF election for an ESI, and specify a preference value.

With this option, the device uses value as an administrative preference value associated with the Ethernet segment identifier (ESI) you configure at the same esi hierarchy level. DF candidate devices exchange the preference value in EVPN Type 4 routes using the DF election extended community.

When the candidate devices in the Ethernet segment receive the Type 4 route, they determine their DF preference order based on the configured preference value and the IP address.

By default, the candidate devices base the preference-based DF election process on the highest configured preference value. To enable DF election based on the lowest configured preference value instead of the highest configured preference value, you can include the designated-forwarder-preference-least statement at the [edit routing-instance routing-instance-name protocols evpn] hierarchy level.

Whether you specify to use the highest or lowest configured preference value to determine preference order, if all the DF candidate devices for the ESI have the same configured preference value, then they elect the DF based on the lowest IP address.

• Default: 32767

• Range: 0 through 65535

Use MOD-based DF election.

The device uses MOD-based DF election by default if you don't configure the df-election-type statement at all.