Multiple ISP failover
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I have Two ISPs at two different locations, with OSPF routing set up internally.
I have the default routes advertised via OSPF at each site. At site A I have a SonicWall, and it tests if the default route. When the route goes down, it drops the default route advertisement, and traffic moves on to site B.
At site B I have a pfSense with frr doing the OSPF. I can get it to advertise the default route, but I'd like to know how to get it to stop advertising that route if the ISP there is down. Currently I wait for people to notice the internet is down, and go in and manually drop the route.
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Not sure where to go with this, is it not possible, do I need to submit it as a feature request instead?