I am looking for a way to see which VLANs are spanned correct on the AMD. In the Console under sniffing point diagnostics I see some VLANs, but they are not visible at all the 4 nics in use, however there is traffic on. So maybe there is in RCON a command to check this?
The only place I know directly is as you describe under the diagnostics.
The other slightly more convoluted way would be to take a trace on the specific interface and load it into WireShark (or NV if you have that around)
As i understand it, the VLAN's will be more visible in the future.
It struck me that you might want the Switch administrator to dump the configs for the SPAN and compare them. It's easy to miss a few paramters and then the VLAN ID's will be peeled off in the SPAN. This is the default function in SPAN so that's why it easily happens.