Configure BFD Sessions on an Interface

You can configure the intervals that a device waits to send (transmit) or receive control packets from Bidirectional Forwarding Detection (BFD) peers.

About this task

BFD is enabled by default on configured Layer 3 interfaces (IPv4 or IPv6). Take the following steps to configure the BFD session parameters.

Procedure

  1. Access global configuration mode.
    device# configure terminal
  2. Access interface configuration mode.
    device(config)# interface ethernet 1/4
  3. Specify the transmit time in milliseconds (ms), the receive time in ms, and the multiplier value that determines the number of consecutive control packets that must be missed before the connection to a peer is considered non-operational.
    device(conf-if-eth-1/4)# bfd interval 100 min-rx 100 multiplier 10
    This example specifies a transmit interval of 100 ms, the min-rx keyword followed by a receive interval of 100 ms, and the multiplier value of 10, which indicates that 10 consecutive packets must be missed before the connection to the peer is considered non-operational.

Example

This example configures BFD session parameters on a VE interface.

device# configure terminal
device(config)# interface ve 24
device(config-if-ve-24)# bfd interval 140 min-rx 125 multiplier 44