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IPv6 multihop BFD for BGP on SRX

[ Edited ]
‎06-28-2018 03:26 AM

Does anyone know if multihop BFD for IPv6 BGP on the SRX is supported? I am trying to set up BFD between a few IBGP neighbors on IPv6 and it doesn't seem to want to come up. I have v4 BFD working and IPv6 single-hop BFD working. Platform is SRX240H, 12.1X46-D55.3. I have BFD configured in all the appropriate security zones and I'm allowing it in my lo0 access filter. When I do a 'monitor traffic interface', I see BFD packets going out, but nothing coming in. The behavior is the same on all three IBGP neighbors involved. I am aware of this command:

 

set routing-options ppm no-delegate-processing

but I don't think that command is relevant on the SRX240. Here's my capture output:

 

06:20:01.213816 Out IP 192.168.55.4.49152 > 192.168.55.3.4784: BFDv1, Multi-hop Control, State Up, Flags: [none], length: 24
06:20:01.232723  In IP 192.168.55.3.49152 > 192.168.55.4.4784: BFDv1, Multi-hop Control, State Up, Flags: [none], length: 24
06:20:01.413839 Out IP6 2001:db8::1234:aaaa:d004.49152 > 2001:db8::1234:aaaa:d003.4784: BFDv1, Multi-hop Control, State Down, Flags: [none], length: 24
06:20:01.680291  In IP 192.168.55.2.49152 > 192.168.55.4.4784: BFDv1, Multi-hop Control, State Up, Flags: [none], length: 24
06:20:01.722870 Out IP6 2001:db8::1234:aaaa:d004.49152 > 2001:db8::1234:aaaa:d002.4784: BFDv1, Multi-hop Control, State Down, Flags: [none], length: 24
06:20:02.200832 Out IP 192.168.55.4.49152 > 192.168.55.2.4784: BFDv1, Multi-hop Control, State Up, Flags: [none], length: 24
06:20:02.448342  In IP 192.168.55.3.49152 > 192.168.55.4.4784: BFDv1, Multi-hop Control, State Up, Flags: [none], length: 24
06:20:02.507276 Out IP 192.168.55.4.49152 > 192.168.55.3.4784: BFDv1, Multi-hop Control, State Up, Flags: [none], length: 24
06:20:02.846442  In IP 192.168.55.2.49152 > 192.168.55.4.4784: BFDv1, Multi-hop Control, State Up, Flags: [none], length: 24
06:20:02.898902 Out IP6 2001:db8::1234:aaaa:d004.49152 > 2001:db8::1234:aaaa:d003.4784: BFDv1, Multi-hop Control, State Down, Flags: [none], length: 24
06:20:03.211893 Out IP6 2001:db8::1234:aaaa:d004.49152 > 2001:db8::1234:aaaa:d002.4784: BFDv1, Multi-hop Control, State Down, Flags: [none], length: 24

What am I missing here?

 

EDIT: I did find PR1239016, which is for multihop IPv6 BFD, but the PR is for the SRX5000 series. 

4 REPLIES 4
SRX Services Gateway

Re: IPv6 multihop BFD for BGP on SRX

‎06-28-2018 04:08 AM

Hi,

As per documentation, it is supported: In Junos OS Release 11.2 and later, BFD supports IPv6 interfaces with BGP.

Reference: https://www.juniper.net/documentation/en_US/junos/topics/concept/bgp-bfd-understanding.html

Have you tried without lo0 filter?

Are IPv6 BFD packets receiving at peer side?

 

Thanks,
Nellikka
JNCIE x3 (SEC #321; SP #2839; ENT #790)
Please Mark My Solution Accepted if it Helped, Kudos are Appreciated too!!!
SRX Services Gateway

Re: IPv6 multihop BFD for BGP on SRX

‎06-29-2018 05:19 AM

Yes, I have tried without an lo0 filter and I still don't see any inbound packets for IPv6 (please see output in the original post).

SRX Services Gateway

Re: IPv6 multihop BFD for BGP on SRX

‎06-30-2018 04:09 AM

Do you have protocol bfd allowed on the zone the interface is assigned to under host inbound traffic

 

Steve Puluka BSEET - Juniper Ambassador
IP Architect - DQE Communications Pittsburgh, PA (Metro Ethernet & ISP)
http://puluka.com/home
SRX Services Gateway

Re: IPv6 multihop BFD for BGP on SRX

‎07-02-2018 02:21 AM

@spuluka wrote:

Do you have protocol bfd allowed on the zone the interface is assigned to under host inbound traffic

 


Yes. If I didn't, none of the other BFD sessions would be up. Smiley Very Happy