VRRP and ARP

RouterOS General
1

Hello

i have a redundant router setup with two CCR1016-12G. VRRP is configured with a virtual IP of 10.11.12.2/30

They are connected (through an HP Aruba Switch) to an edge Router (CCR1036-8G-2S+), which is the default Gateway 10.11.12.1/30

VRRP works. After a few seconds slave becomes master. But it takes an additional 20-30 seconds until connectivity is restored.
My guess is that the ARP cache of the edge router is the culprit. During the master-slave switch, the edge has 10.11.12.2 with two macs in ARP and it takes a while until the invalid one disappears.

Any suggestions?

2

http://forum.mikrotik.com/t/vrrp-instability-flapping/128779/1

3

thx for the reply, but it doesn’t seem my issue is part of the linked thread.
The issue isn’t flapping interfaces. It just takes a “long” time after a legit master/slave switch until upstream is reachable again.

4

Hi,

Can you try with /29 instead of /30 ? And use /32 on the vrrp interface?