Thx, replies below. I sent another email with Juniper traces and Wireshark screenshots but it is big and waiting on moderator approval. It is interesting that the MX thinks Bird is in AdminDown but bird thinks it is in Init MX "show bfd sessions extensive": Address State Interface Time Interval Multiplier 169.254.255.1 Down xe-2/0/0.2 0.000 1.000 5 Client BGP, TX interval 0.100, RX interval 0.010 Local diagnostic None, remote diagnostic None Remote state AdminDown, version 1 Replicated Min async interval 0.100, min slow interval 1.000 Adaptive async TX interval 0.100, RX interval 0.010 Local min TX interval 1.000, minimum RX interval 0.010, multiplier 5 Remote min TX interval 0.000, min RX interval 0.000, multiplier 0 Local discriminator 2058, remote discriminator 0 Echo mode disabled/inactive, no-absorb, no-refresh Session ID: 0x87f 1 sessions, 1 clients Cumulative transmit rate 1.0 pps, cumulative receive rate 0.0 pps Bird "show bfd sessions": bird> show bfd sessions bfd1: IP address Interface State Since Interval Timeout 169.254.255.3 --- Init 18:47:50 1.000 5.000 169.254.255.2 --- Init 18:47:49 1.000 3.000 169.254.255.4 --- Init 18:47:46 1.000 3.000 The bird debug logs were not informative. I will check the firewall ... good point. The MX is getting some bfd based on the traces but maybe the firewall is disrupting things. From: Dmitry S. Nikolaev [mailto:dnikolaev@mega-net.ru] Sent: Sunday, August 16, 2015 1:25 AM To: Leighton, Russell Cc: bird-users@network.cz Subject: Re: BFD and Juniper? Hi. 1. What output on MX for: # show bfd session extensive 2. What output on BIRD for:
show bfd sessions
3. Try to enable debug for BFD on bird and see what happens in log file. 4. Use tcpdump on BIRD side to see all BFD packets are send or recieved. 5. Do you have firewall on MX ? Check firewall, it must not block ports: UDP 3784, 4784 for your neighbor`s IP. --- With best regards, Dmitry S. Nikolaev Moscow, Russia phone: +7 (499) 678 8007 [ext. 6003] fax: +7 (499) 678 8007 [ext. 7777] www: http://www.mega-net.ru mail: dnikolaev@mega-net.ru<mailto:dnikolaev@mega-net.ru> On 15.08.2015 22:57, Leighton, Russell wrote: 12.3 I'll try Job Snijders suggestions soon. From: Dmitry S. Nikolaev [mailto:dnikolaev@mega-net.ru] Sent: Saturday, August 15, 2015 11:14 AM To: Leighton, Russell Cc: bird-users@network.cz<mailto:bird-users@network.cz> Subject: Re: BFD and Juniper? Hi. What Junos version on you router ? There is a bug in Junos 10.4 (and maybe early versions) with SRC address for BFD session if router have several IP`s on one iface. --- With best regards, Dmitry S. Nikolaev Moscow, Russia phone: +7 (499) 678 8007 [ext. 6003] fax: +7 (499) 678 8007 [ext. 7777] www: http://www.mega-net.ru mail: dnikolaev@mega-net.ru<mailto:dnikolaev@mega-net.ru> On 15.08.2015 17:42, 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? I'm happy to share Juniper traces if that would lend some insight. Thx in advance. -Russ Russell Leighton Senior Software Development Engineer Amazon Web Services / EC2 Networking leightr@amazon.com<mailto:leightr@amazon.com> Mobile: 301.828.8458