[j-nsp] MX VRRP on VXLAN enviroment

[Aftab Ahmed]

Hello Cristian
I once faced a similar issue and I came across this PR mentioned in this
KB. I think it’s worth checking.

https://supportportal.juniper.net/s/article/Junos-18-4R3-3-18-4R3-S1-3-18-4R3-S2-19-1R2-8-19-1R2-S1-1-19-2R2-is-not-recommended-to-be-deployed-on-MX-Series-platform-with-Trio-MPCs-for-EVPN-with-MPLS-VXLAN?language=en_US



Alert Description

With EVPN with MPLS/VXLAN environment, on an MX/EX Series router with
Trio-based MPCs, unicast traffic will be dropped when the destination is
reachable over an integrated routing and bridging (IRB) interface
participating in the EVPN instance. PR1497203 is tracking this issue.



On Mon, Jul 19, 2021 at 5:27 AM Cristian Cardoso via juniper-nsp <
juniper-nsp at puck.nether.net> wrote:

> I have a scenario here where I use EVPN-VXLAN with qfx5120 switches
> and until then I was using the gateways on the switches, but as the
> switch does not have the possibility to use any kind of firewall on
> the irb interfaces, I had the idea to migrate the networks to two
> routers MX80.
> But I caught a problem with these routers, when using VRRP over VXLAN.
> I configured the two MX80 routers with VRRP in IPv4 and IPv6,
> sometimes IPv4 dies and the virtual IP stops responding, generating
> timeout in network accesses.
> Apparently it seems that the mac address of the virtual IP and the
> table of mac's of the VXLAN are lost, causing the problem.
> Does anyone happen to have a scenario like this and faced this problem?
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-- 
Thanks, Aftab