but what if both the vlans are dedicated for different services? Don't we have unwanted traffic to each of the ports in case broadcast domain being shared.
When you say "dot1q tags are terminated on a per-interface basis, so they are per-interface significant." that means I can have same dot1q on the same line card but on different interfaces? I thought we can only have it on different LC.
How does it work differently from any switch vlans where the broadcast will be received by all ports in that vlan? If we have same dot1q over two different interfaces, how does the traffic will differentiate where to go?
i would recommend watching cisco live, its free to sign up and has a video that explains the evc framework
at the 16 minute mark EFP presentation starts