Dual ISP - Will not activate dual default gateway routes

traylorm — Fri, 11 Mar 2022 14:34:27 GMT

I just installed a firewall for a customer last night and it absolutely refuses to activate the default route for both ISPs in the virtual router. Only 1 will go active at a time. The intent is to just use route monitoring and use the primary ISP unless it goes down.

The primary ISP static default route is created with a route monitor.

The backup ISP is DHCP and the route is auto created with a metric of 20 and shouldn't be used unless the primary fails.

What I am seeing in the routing table is a single default route. The 2nd one never activates. Even if I enabled it for ECMP only one would go active at a time.

I have done several in this manner and have never encountered this before. Any thoughts?

Re: Dual ISP - Will not activate dual default gateway routes

traylorm — Thu, 24 Mar 2022 13:40:46 GMT

Turns out this was expected behavior. I've been so used to using ECMP and expecting both routes to be alive.

topic Re: Dual ISP - Will not activate dual default gateway routes in General Topics

Dual ISP - Will not activate dual default gateway routes

Re: Dual ISP - Will not activate dual default gateway routes