I get the point, but if I dont define interface vlan 200 on the 6500 switch then how will the switch route the traffic to the VPN box.
The 6500 is the border router that routes traffic.
So my question is even if the VPN device is located external to the switch/ACE will that VLAN 200 still be communicated to the ACE contexts? that VLAN does not reside in any of the contexts because its not meant to be for the ACE.
So in the VPN VLAN case, i use it only to route traffic to the VPN box?
I am asking this only to clear a doubt of my mind. Appreciate your response
The Cat6k will not "route" the traffic from the ace to the vpn ... it with "switch" it....
the difference is that as long as the traffic is part of the same vlan (ie: 200) the switching is done based on the mac-address.
So if ACE sends the traffic with dest-mac == VPN-device, the Cat6k will see traffic coming from ace vlan 200 and with destination vpn-mac-vlan200 ...so it will just switch it to the corresponding interface.
When you create an 'interface vlan X' on the cat6k you actually create a L3 interface... in the old days there was a Sup and an MSFC.
The Sup did the switching and the MSFC the routing.
The 'interface vlan x' command was to conigure the MSFC.
But it is not required for the Sup to switch traffic inside a single vlan.
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