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BFD

BFD is described and extended by the following RFCs: RFC 5880, RFC 5881 and RFC 5883.

Configure BFD

set protocols bfd peer <address>
Set BFD peer IPv4 address or IPv6 address
set protocols bfd peer <address> echo-mode
Enables the echo transmission mode
set protocols bfd peer <address> multihop
Allow this BFD peer to not be directly connected
set protocols bfd peer <address> source [address <address> | interface <interface>]
Bind listener to specifid interface/address, mandatory for IPv6
set protocols bfd peer <address> interval echo-interval <10-60000>
The minimal echo receive transmission interval that this system is capable of handling
set protocols bfd peer <address> interval multiplier <2-255>
Remote transmission interval will be multiplied by this value
set protocols bfd peer <address> interval [receive | transmit] <10-60000>
Interval in milliseconds
set protocols bfd peer <address> shutdown
Disable a BFD peer

Enable BFD in BGP

set protocols bgp <asn> neighbor <address> bfd
Enable BFD on a single BGP neighbor
set protocols bgp <asn> peer-group <group> bfd
Enable BFD on a BGP peer group

Enable BFD in OSPF

set interfaces ethernet <ethN> ip ospf bfd
Enable BFD for ospf on a interface
set interfaces ethernet <ethN> ipv6 ospfv3 bfd
Enable BFD for ospfv3 on a interface

Operational Commands

show protocols bfd peer

Show all BFD peers

BFD Peers:
     peer 198.51.100.33 vrf default interface eth4.100
             ID: 4182341893
             Remote ID: 12678929647
             Status: up
             Uptime: 1 month(s), 16 hour(s), 29 minute(s), 38 second(s)
             Diagnostics: ok
             Remote diagnostics: ok
             Local timers:
                     Receive interval: 300ms
                     Transmission interval: 300ms
                     Echo transmission interval: 50ms
             Remote timers:
                     Receive interval: 300ms
                     Transmission interval: 300ms
                     Echo transmission interval: 0ms

     peer 198.51.100.55 vrf default interface eth4.101
             ID: 4618932327
             Remote ID: 3312345688
             Status: up
             Uptime: 20 hour(s), 16 minute(s), 19 second(s)
             Diagnostics: ok
             Remote diagnostics: ok
             Local timers:
                     Receive interval: 300ms
                     Transmission interval: 300ms
                     Echo transmission interval: 50ms
             Remote timers:
                     Receive interval: 300ms
                     Transmission interval: 300ms
                     Echo transmission interval: 0ms