Do i really need two vlans for dot1q tunnel in case of

From: mac ccie (mac2008.ccie@gmail.com)
Date: Sat May 17 2008 - 16:51:24 ART


Experts,

Sw1----------------port 1 Sw2 port1 -------------------------------Sw3
       ---------------- port2 port2
-------------------------------

If I have to connect SW1 and Sw3 using etherchannel do I really need two
vlans on Sw2 (one for port1 on both sides and one for port2 on both
sides). One of the examples I see in IE labs are using two seperate vlans.
I tried and it work with even a single vlan on both side.

Sw2:

both port1:

sw mo dot1q
sw acc vlan 100
l2pro cdp

both port2:

sw mo dot1q
sw acc vlan 100 <<one of the lab in IE I saw using 101 here.
l2pro cdp

Also in general If Sw1 and Sw3 are same customers branches then regardless
of how many links I have to the same customer switch I should assign same
metro vlan right?

Thanks,
Mac



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