Configures the time in seconds to wait before electing a designated forwarder.
The default setting is three seconds.
Cluster configuration mode
Use the no form of the command to reset the default setting of three seconds.
The designated forwarder is a PE in a set of multi-homing PEs connected to the same Ethernet segment that is responsible for sending BUM traffic to a client for a particular VLAN ID on an Ethernet segment.
DF election is not triggered unless at least one remote CCEP is configured. When a CCEP goes up or down, DF election is triggered as soon as the Ethernet route acknowledgment from remote peer is received.
When a client is deployed locally or remotely, or the BGP session comes up, the DF timer does not start and DF election is not performed until the timer expired.
The following example configures a 20-second hold time for DF election.
device(config)# cluster MCT1 1 device(config-cluster-1)# designated-forwarder-hold-time 20