Determining VLAN tagging on a 3550

[Stephen Carville]

We are trying to replace the CSS between our firewall and DMZ with a BigIP.  Among it's other functions, it will act as the router between the firewall and the DMZ. To make this work, I need to assign vlan tags values for the vlans I create on the BigIP box and these must match the tags on the cisco switches (3550's)  How do I find this information on the switch?

[pjmonline]

Sh run int gi 1/0/1

Look for switchport access vlan 10
Or if trunk look for switchport trunk native vlan 10
And switchport trunk allow vlan 10,20,30

If you don't see any of the than it is by default vlan 1. You will need to add the statements to specify the correct vlan

HTH



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[Stephen Carville]

Does that mean the value of the tag in the frame is the same as the vlan ID?  That would make it easy since I set the vlan names on the BigIP to match the names on the switches.