- Gold, 750 points or more
I've been testing redundancy of a pair of ACE 4710 Appliances (A3(1) software) in our lab and run into a peculiarity in the FT configuration. I configure the FT exactly as in the configuration guide and it works perfectly as long as I use a cross-over cable between the FT interfaces. This is the relevant config (other ACE same apart from IP's reversed).
interface gigabitEthernet 1/4
ft-port vlan 10
ft interface vlan 10
ip address 192.168.1.1 255.255.255.0
peer ip address 192.168.1.2 255.255.255.0
ft peer 1
heartbeat interval 300
heartbeat count 10
ft-interface vlan 10
query-interface vlan 90
ft group 1
As I said - works great with a crossover cable. However, the appliances will be far enough apart that I need to use a normal switched connection and this just refuses to work (both appliances on consecutive ports on the same switch). The connections come up and there are no errors on the switch ports or the appliances, but the heartbeat packets don't seem to get through. The odd thing is that if I swap the "ft-port vlan 10" command for a normal "switchport access vlan 10" command then it works fine.
Can anyone explain this weirdness? what exactly does the "ft-port" do?