[j-nsp] MX VRRP on VXLAN enviroment

[Andrey Kostin]

Hi Cristian,

I tried to reproduce the issue by reverting the configuration, but it 
didn't occur. It's still unclear to me why only v4 was affected and v6 
was not. Furthermore, in stable state (which it was in my case) vrrp 
backup is silent so no mac move events can happen and I confirmed it 
with vrrp statistics that I collected before disabling VRRP, backup 
router wasn't sending anything.
After re-activating the interface on backup router I also didn't see any 
vrrp packet sent from it. Eventually I ended up with configuring 
exception for VRRP MACs and will watch how it goes:

https://www.juniper.net/documentation/us/en/software/junos/evpn-vxlan/multicast-l2/topics/ref/statement/exclusive-mac-edit-protocols-l2-learning-global-mac-move.html

Kind regards,
Andrey

Cristian Cardoso писал(а) 2022-12-14 11:20:
> Hi Andrey
> 
> In my case, what you said happened, as I modified the arp suppression
> configuration of evpn-vxlan, since this was silently dropping mac's
> and dropping VRRPv4 only, in IPv6 this did not happen.
> 
> set protocols evpn duplicate-mac-detection detection-threshold 20
> set protocols evpn duplicate-mac-detection detection-window 5
> set protocols evpn duplicate-mac-detection auto-recovery-time 5
> 
> With the above configurations, I never had a problem with VRRPv4
> crashing in my environment.
> 
> Environment with VRRP is already working since the email that responds
> in 2021 without any drop or problems.
> 
> kind regards,
> 
> Cristian Cardoso
>