From: Danny.Andaluz@triaton-na.com
Date: Mon Feb 02 2004 - 14:37:42 GMT-3
Hello, Group.
What exactly is the native vlan used for?
I've done practice scenarios where the native vlan is required to be
specified and others where this is not needed. Both ways work. So what
exactly is the purpose of the native vlan in 802.1q?
For example, one setup would be where a router is routing for vlans 45 and
34 and vlan 45 is configured as the native vlan on the router sub-interface
and the switchport. What is the difference between vlan 45 and vlan 34 in
this case? What traffic, if any, is sent on vlan 45 that is not sent on
vlan 34?
Using the same scenario, I specify no native vlan on either interface and
traffic is still routed by the router for both VLANs.
I tried to find an RFC for 802.1q and no luck. The Doc CD doesn't really
clear this up either.
Thanks,
Danny
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