I have two switches (6500) that I'd like to have monitored via span. I have two ports on each switch that need to monitored. On the remote switch I have created a remote-span vlan which works fine, however when I try to configure a local span session and put a destination interface in the switch refuses my setup as it says an existing destination is already setup.
Can someone please suggest a way to get around this problem. On my capture box I only have two ports, one allows me to connect to the box the other is for capturing data.