VHIDs with two CARP HAs in the same LAN network?

[NSuttner]

Hello,

i've a pfSense CARP HA with 2 netgate XG-7100 machines and it's own internetline in our datacenter running without any problems! Last week i have installed a new CARP HA with 2 netgate XG-7100 and a separate internetline. The old and the new CARP HA were connected via a dark fiber line on the LAN interfaces side!

If i set the same VHID 2 or a other on the new CARP HA for LAN VIP, then the complete LAN network get into a crisis!!!! If i only let die machine in single mode, everything works fine! Any idea what is going wrong?

Regards,
Norbert

[viktor_g]

@nsuttner Try to set unique VHID numbers for each HA pair

[NSuttner]

@viktor_g Hi, you mean, for example all interfaces?

Cluster1
CARP Interface
WAN@1 - VIP Address
LAN@2 - VIP Address
OPT1@3 - VIP Address

Cluster2
CARP Interface
WAN@4 - VIP Address
LAN@5 - VIP Address
OPT1@6 - VIP Address

Thanks and regards,
Norbert

[Derelict]

@nsuttner The CARP MAC address is derived from the VHID. This also applies to VRRP on the same segment.

You must use unique VHIDs on the same broadcast domain or you will experience MAC address collisions.

[NSuttner]

@derelict said in VHIDs with two CARP HAs in the same LAN network?:

The CARP MAC address is derived from the VHID. This also applies to VRRP on the same segment.
You must use unique VHIDs on the same broadcast domain or you will experience MAC address collisions.

Hi, i will try it with unique VHIDs and let you know my results! Thanks for your fast help, regards Norbert!