BFD on LAG

[rrojasa]

Hi Experts,
We are planning to implement BFD on LAG using X670 Switches and CISCO Nexus. I couldn't find any reference of Micro BFD sessions or BFD on LAG on XOS 15.X or 21.X. Do you now if it is supported?



BR
Rigoberto

[rrojasa]

Hi,

I knew it can be configured , but as per rfc72130, BFD over a LAG has a specific operation (Micro-BFD Sessions). On other vendors I found this implementations supported on the documentation, but I could not find any reference on XOS docs. Do you know if there any document were I can find it?



BR
Rigo

[BrandonC]

All you need to do is enable BFD on the VLAN, then turn BFD on for the OSPF interface. See the commands below:
enable bfd vlan ospf_1 configure ospf vlan ospf_1 bfd on

[welisson]

Hi Henrique,

In this case to enable BFD for OSPF is there anything else that I have to do or just enable BFD over the vlans were included on OSPF?

Thks

[Henrique]

Hi,

Unfortunately I didn't find any information in the XOS docs.

I have configured that in a simple environment (OSPF point-to-point with BFD in a VLAN/LAG) and worked as expected.

Please see below some outputs:

LACP Sharing:

OSPF neighbor:

BFD session (3x 150ms):

[Henrique]

Hi Rigoberto, BFD is applied per vlan to an specific client like OSPF/MPLS/Static route.

You can configure BFD on a vlan even if the uplink is a LAG.