Backpacked into a remote tower last week to replace the three-port MT router we had there with a larger 9-port RB493ah. Needed an additional port for a new backhaul.
Ether1 was 10.0.8.5/24, and is where the tower gets it's bandwidth from. Ether 2-9 are on some type of switch chip, but I assumed they could route individually. Ether2 was 10.0.37.1/24 and feeds local AP's. Ether3 was 10.0.40.1/24 and is a backhaul, and Ether4 is a backhaul at 10.0.50.1/24.
I plugged in the new router, and our monitoring system back at the office started reporting that the interfaces were up (as in 10.0.37.1, 40.1, and 50.1 were pingable), but couldn't see beyond them. The access points at 10.0.37.2, .3, and .4 were not responding. The backhauls 10.0.40.2 and 40.3 and the Mikrotik at 10.0.40.4 couldn't be reached, and the 10.0.50.2 and 50.3 backhauls weren't responding either.
I futzed around as long as I could with the tower down. The office could connect to the Mikrotik at 10.0.8.5, so routing on Ether1 was working, but not on the Ether ports off the switch chip. I had to abandon ship and plug the old router back in.
So, I guess I'm wondering what's going on? I did not configure Ether2-9 as switch ports, so they should be individually routable. Anyone see what I'm missing or doing wrong?