I'm trying to find out if SGE2010 will do the following feaute:
Port 1: Vlan X Untagged
Port 2: Vlan Y Unttaged
Port 3: Vlan X tagged, Vlan Y tagged.
port 3 would be a ASA apliance with two virtual interfaces on that VLANS. Will the swich add the tags when untagged frames comes from port 1 or 2 and will forward it to port 3 tagged.
Will switch remove tags from port 3 and deliver it to corresponding Port 1 or Port 2.
I've achieved this behaviour with a netgear switch.
Why not try Cisco Network Assistant (CNA), it's availble to configure the Catalyst switch, and you don't have to be highly skilled with cisco CLI to use it. Grab it from the following location;. http://www.cisco.com/en/US/products/ps5931/index.html
Check out the manual or release notes on CNA there might be a couple of commands needed on the switch so that CNA can gain access to the switch.
I just tried the following via CNA, it should be easy.
Make sure you select the option to save the configuration. If you want a CLI example, here is a configuration example;
The switch will do that for you, it will remove the tag once it comes back in on the trunk port.
However, this switch will not allow you to tag vlan 1 so you will have to use 2 different vlans other than one and tag them on the trunk port.