QinQ config from one of our ME3400:
Cisco IOS Software, ME340x Software (ME340x-METROIPACCESSK9-M), Version 12.2(53)SE, RELEASE SOFTWARE (fc2) Switch Ports Model SW Version SW Image ------ ----- ----- ---------- ---------- * 1 26 ME-3400-24TS-A 12.2(53)SE ME340x-METROIPACCESSK9-M interface FastEthernet0/20 port-type nni switchport access vlan 100 switchport mode dot1q-tunnel no cdp enable sh system mtu System MTU size is 1900 bytes System Jumbo MTU size is 2000 bytes Jon Harald Bøvre ________________________________________ Fra: [email protected] [[email protected]] på vegne av Frank Bulk - iName.com [[email protected]] Sendt: 9. juli 2010 05:09 Til: [email protected] Kopi: [email protected] Emne: Re: [c-nsp] Cheapest Cisco desktop switch that supports Q-in-Q/802.1Q VLAN encapsulation/double-tagged VLANs/Stacked VLANs Thanks for explaining the semantical differences. What I'm looking to do is the termination -- wouldn't the ME3400 do the trick? Frank -----Original Message----- From: [email protected] [mailto:[email protected]] Sent: Thursday, July 08, 2010 3:56 AM To: [email protected] Cc: [email protected] Subject: Re: [c-nsp] Cheapest Cisco desktop switch that supports Q-in-Q/802.1Q VLAN encapsulation/double-tagged VLANs/Stacked VLANs > What is the cheapest Cisco desktop switch that supports Q-in-Q? Is it the > ME-3400G-2CS-A? We prefer the "encapsulation dot1q x second-dot1q y" > approach. Your last sentence doesn't make sense here. "Q-in-Q" generally refers to *tunneling* one VLAN trunk through an L2 network by adding an extra VLAN tag in front of the existing VLAN tag. "encapsulation dot1q x second-dot1q y" is used to *terminate* a dual tagged VLAN connection (typically an IP termination). This is very different from *tunneling*. So - do you want tunneling or termination? I don't believe there are any Cisco desktop switches which can IP terminate a dual tagged VLAN connection. There are, of course, plenty of desktop switches which will do 802.1Q tunneling. Steinar Haug, Nethelp consulting, [email protected] _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/ _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
