What is the purpose of an Anchor Controller?

Posted on 2008-10-04
Last Modified: 2013-11-12
Hi Experts,

I'm fairly good with Cisco wireless LWAPP and autonomous. Can someone tell me the purpose of having an Anchor Controller for Guest access?
Question by:typertec
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LVL 12

Expert Comment

ID: 22642999
This basically separates the functions of the guest WVLAN from the main corporate WVLAN. In this way, statistics for guest traffic and data for threat analysis can be gathered separately.
That's about it! Any questions?

Author Comment

ID: 22643119
Couldn't that also be accomplished by making a separate mobility group for guest, have them on a separate subnet...then have a route map to route that subnet out?
LVL 12

Accepted Solution

Pugglewuggle earned 350 total points
ID: 22643153
That yes it could and it would work just fine - however an anchor controller is specifically for providing guest access in the same mobility group.
Here's a Cisco FAQ on how to use anchor controllers for guest access

Author Comment

ID: 22684408
Thanks for the link. I have a 6500 with a WLSM as the controller. There are multiple mobility groups, one being set for guest. Would the wlsm then be considered the anchor controller even though it's the controller for the other mobility groups? From the AP, guest traffic gets tunneled to the WLSM and from there it gets routed to the BBSM via a routemap. I'm not sure what the purposes of routing it to the BBSM is for.
LVL 12

Expert Comment

ID: 22684811
Aaaahhh very nice, that's a nice card.
I suppose then that it does act as a "virtual" anchor controller, but a true anchor controller is actually a separate device altogether - this is done to completely isolate guest traffic from the main network.
I personally probably wouldn't worry about using an anchor controller... it seems to me that it's just one of Cisco's ploys to sell some expensive unnecessary equipment.
As far as the BBSM, I don't see the purpose either.

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