SSR uses bfd to monitor peer connectivity over its WAN links.

At the time of writing this document, The bfd profiles associated with overlay hub endpoints are predefined in Mist and cannot be edited. There are two predefined bfd profiles available in the dropdowns under wan link configuration : "LTE" and "BroadBand"

Config difference between BFD Broadband and LTE

Broadband

config authority router <router name> node node0 device-interface ge-0-0 network-interface ge-0-0 adjacency 10.10.20.10 <peer router name> bfd desired-tx-interval       1000
config authority router <router name> node node0 device-interface ge-0-0 network-interface ge-0-0 adjacency 10.10.20.10 <peer router name> bfd required-min-rx-interval  1000config authority router <router name> node node0 device-interface ge-0-0 network-interface ge-0-0 adjacency 10.10.20.10 <peer router name> bfd link-test-interval        10

LTE

config authority router <router name> node node0 device-interface ge-0-0 network-interface ge-0-0 adjacency 10.10.20.10 <peer router name> bfd desired-tx-interval       60000
config authority router <router name> node node0 device-interface ge-0-0 network-interface ge-0-0 adjacency 10.10.20.10 <peer router name> bfd required-min-rx-interval  60000

config authority router <router name> node node0 device-interface ge-0-0 network-interface ge-0-0 adjacency 10.10.20.10 <peer router name> bfd link-test-interval        120