We have a two buildings connected each other with a wireless bridge. Each building has only 1 ISP and we would like to failover traffic over the wireless bridge in case of ISP failure. The firewall of each building are MX and as cores on the first building we have a catalyst 4500 and MS250 in the second one. I know that I can configure IP SLAs on catalyst switches to switch the default gateway but how can I manage this on MS switches ?
I thought about connecting WAN 2 of each MX with the wireless bridge instead of using core layer but I wanted to know if somebody has ideas about that please ?
If so, you could create a VLAN and trunk WAN2 of each MX into the back of the MX at the other site.
If your ISPs have given you a block of routable addresses (like a /29) you could run the ISP circuits into a VLAN at each site, and trunk it across both sites, and then both MX could plug into both ISP circuits.