I've got two servers setup working on making them HA backups of each other part of that involves running a firewall on one connected to the cable modem through a switch so if it fails the firewall restarts on the other box and reconnects to the modem. Currently it works just fine running through a small 5 port dumb switch but I was hoping to be able to get rid of that switch and use a VLAN on a Cisco SG200 for the modem network instead. The problem is it just REALLY doesn't want to work on the smart switch at all.
I've got the desired ports set to QinQ currently since that should provide the maximum issolation from the rest of the network, and it appears that the two ports are talking at least somewhat as the xmit on the modem is close to the RX on the active server port, the active server port xmit and modem RX isn't quite as close so I might be losing some packets there. The lights indicate the ports are talking to each other though, if I unplug the cable modem the server connection light slowly flickers as it polls and a few seconds after plugging the modem back in to a port configured for the modem vlan the both lights flicker quickly.
Am I missing something painfully obvious here or will this modem just not work when hooked up through a vlan or QinQ tunnel on a smart switch for some reason...
I've got the desired ports set to QinQ currently since that should provide the maximum issolation from the rest of the network, and it appears that the two ports are talking at least somewhat as the xmit on the modem is close to the RX on the active server port, the active server port xmit and modem RX isn't quite as close so I might be losing some packets there. The lights indicate the ports are talking to each other though, if I unplug the cable modem the server connection light slowly flickers as it polls and a few seconds after plugging the modem back in to a port configured for the modem vlan the both lights flicker quickly.
Am I missing something painfully obvious here or will this modem just not work when hooked up through a vlan or QinQ tunnel on a smart switch for some reason...