Routed ports on switch in same subnet?

[J Sullivan]

I have two routers in a VRRP config going to the internet.  Trying to do all L3 services in a switch stack (Cisco 3750G x2).  Issue is getting two ports in the stack on the same subnet so I can route to the virtual IP for the router pair in VRRP.  Everything works if I have just one port in the subnet.  As soon as I try to add a second port on the switch to the subnet it errors out.  Makes sense since I understood that you can't add two L3 ports on the same device to the same subnet.  Is there another way around this?

[Reza Sharifi]

Just keep the ports from the 3750G in layer-2 (access ports) and put them in a vlan. These links will also server as the heartbeat links for your VRRP since there is no connections between the 2 Internet routers.

HTH

[J Sullivan]

Then just set the static routes on the routers to the VLAN IP?

[Reza Sharifi · Accepted solution]

Correct, the static route from the Internet routers point to the vlan IP address which is the Ubiquiti switch.

Then all you need is a default route on the Ubiquiti switch pointing to the VRRP virtual IP (172.24.10.1).

Cisco switches are just layer-2.

HTH