Routing using a single CARP WAN IP

[Mr_JinX]

Hi,

From what i understand it is possible to have a CARP setup with a single public IP. However, how does the routing work as only one box will have the CARP address. Does that mean that the secondary cannot connect to the internet to pull updates?

[viragomann]

@mr_jinx
You can configure a failover group with the WAN gateway and the others box LAN interface.
So on the secondary you have to add the primarys LAN address as a gateway first. Then add a gateway failover group where you set the WAN GW as tier 1 and the pirmarys LAN IP as tier 2.
So now if the WAN GW is not accessible (cause the primary owns the WAN CARP) it goes out over the primary.

You can do the same on the primary with the secondarys LAN IP to retrieve updates when it's in CARP maintenance mode.