BFD and Juniper?

Leighton, Russell leightr at
Sat Aug 15 22:14:45 CEST 2015

Thank you for the suggestion but no joy.

The below was similar to my config but I switched to your exact config.

Bird is still stuck in Init.

Bird keeps sending bfd messages with state=Init to Juniper which has state=Down but the Juniper won't transition to Init or Up.

Does it matter I am in 'rr client' mode?

-----Original Message-----
From: Job Snijders [mailto:job at] 
Sent: Saturday, August 15, 2015 10:52 AM
To: Leighton, Russell
Cc: bird-users at
Subject: Re: BFD and Juniper?

On Sat, Aug 15, 2015 at 02:42:11PM +0000, Leighton, Russell wrote:
> I'm trying to get bird 1.5.0 to have BFD work with Juniper MX Routers.
> Sessions  get stuck in Init state with the Juniper side in Down state.
> Any suggestions?

On the BIRD box, set this in sysctl.conf:

    net.ipv4.ip_local_port_range="49152 65535"

BIRD config:

    protocol bfd bfd1 {
        interface "xxxx";

    protocol bgp neighbor1 {
        [ ... ]
        bfd on;

On the Juniper side something like this:

    job at> show configuration protocols bgp group internal-ipv4 neighbor bfd-liveness-detection
    minimum-interval 10;
    multiplier 5;
    transmit-interval {
        minimum-interval 100;

Kind regards,


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