[j-nsp] QFX VC as part of EVPN - redundancy not working

[Chuck Anderson]

I recommend you do not use VC at all, and instead use ESI-LAG for the server-facing links.

On Mon, Oct 04, 2021 at 11:43:23AM +0000, Giovanni Bellac via juniper-nsp wrote:
> Date: Mon, 4 Oct 2021 11:43:23 +0000 (UTC)
> From: Giovanni Bellac <giovannib1979 at ymail.com>
> To: "juniper-nsp at puck.nether.net" <juniper-nsp at puck.nether.net>
> Subject: QFX VC as part of EVPN - redundancy not working
> Return-Path: <giovannib1979 at ymail.com>
> 
> Hi all,
> I am using a QFX5100 2-member-VC as a L2 gateway in a centrally routed EVPN/VXLAN setup. It seems that the VC redundancy does not work in this configuration properly. For test purposes I am promoting the backup-RE as master-RE and afterwards restarting the old master-RE (now backup-RE). While restarting the backup-RE member the connection to the servers is always lost. The servers are connected to both members via LACP.
> I have tried several JunOS versions (21.1.R1, 20.4R2-S2, 20.2R2-S3, 19.4R3-S3) but the results are always the same.
> 
> Any suggestions to get this work as intended?
> Kind regardsGiovanni