I have a BFD configuration as follows:
trae@cr01a-vyos# show
peer 192.168.253.1 {
interval {
receive 50
transmit 50
}
multihop
source {
address 192.168.253.2
}
}
peer 192.168.253.3 {
interval {
receive 50
transmit 50
}
multihop
source {
address 192.168.253.2
}
}
peer 192.168.253.12 {
interval {
receive 50
transmit 50
}
multihop
source {
address 192.168.253.2
}
}
peer fd52:d62e:8011:fffe:192:168:253:1 {
interval {
receive 50
transmit 50
}
source {
address fd52:d62e:8011:fffe:192:168:253:2
interface dum0
}
}
peer fd52:d62e:8011:fffe:192:168:253:3 {
interval {
receive 50
transmit 50
}
source {
address fd52:d62e:8011:fffe:192:168:253:2
interface dum0
}
}
peer fd52:d62e:8011:fffe:192:168:253:12 {
interval {
receive 50
transmit 50
}
source {
address fd52:d62e:8011:fffe:192:168:253:2
interface dum0
}
}You can see that the peers do get created, but there's an additional IPv6 peer for each configured one:
trae@cr01a-vyos# vtysh -c 'show bfd peers brief' Session count: 9 SessionId LocalAddress PeerAddress Status ========= ============ =========== ====== 3593528133 fd52:d62e:8011:fffe:192:168:253:2 fd52:d62e:8011:fffe:192:168:253:3 up 982613625 fd52:d62e:8011:fffe:192:168:253:2 fd52:d62e:8011:fffe:192:168:253:1 up 3062145522 192.168.253.2 192.168.253.3 up 1513909278 unknown fd52:d62e:8011:fffe:192:168:253:3 down 3367798349 fd52:d62e:8011:fffe:192:168:253:2 fd52:d62e:8011:fffe:192:168:253:12 init 1380539671 unknown fd52:d62e:8011:fffe:192:168:253:1 down 2320718896 192.168.253.2 192.168.253.1 up 2529726712 unknown fd52:d62e:8011:fffe:192:168:253:12 down 4085521433 192.168.253.2 192.168.253.12 up
Here's what the two peers (one configured peer) created look like:
trae@cr01a-vyos# run show protocols bfd peer | grep -A17 'peer fd52:d62e:8011:fffe:192:168:253:1 '
peer fd52:d62e:8011:fffe:192:168:253:1 multihop local-address fd52:d62e:8011:fffe:192:168:253:2 vrf default
ID: 982613625
Remote ID: 3545106482
Status: up
Uptime: 34 minute(s), 11 second(s)
Diagnostics: ok
Remote diagnostics: ok
Peer Type: dynamic
Local timers:
Detect-multiplier: 3
Receive interval: 300ms
Transmission interval: 300ms
Echo transmission interval: 50ms
Remote timers:
Detect-multiplier: 3
Receive interval: 50ms
Transmission interval: 50ms
Echo transmission interval: 50ms
--
peer fd52:d62e:8011:fffe:192:168:253:1 local-address fd52:d62e:8011:fffe:192:168:253:2 vrf default interface dum0
ID: 1380539671
Remote ID: 0
Status: down
Downtime: 34 minute(s), 19 second(s)
Diagnostics: ok
Remote diagnostics: ok
Peer Type: configured
Local timers:
Detect-multiplier: 3
Receive interval: 50ms
Transmission interval: 50ms
Echo transmission interval: 50ms
Remote timers:
Detect-multiplier: 3
Receive interval: 1000ms
Transmission interval: 1000ms
Echo transmission interval: 0ms
[edit protocols bfd]As you can see above, it looks like the two getting created have different local timers, even though I've configured it for 50ms for transmit and receive.