Link to home
Start Free TrialLog in
Avatar of SuperTaco
SuperTaco

asked on

Cisco WDS (or I think that's it)

I have two 1140's with two SSID's  I'm try to set them up so users can go back and for the between the two seamlessly.  Both WAP's have the secure and non-secure SSID's on them.  How do I go about implementing this function on these and is it called WDS?
ASKER CERTIFIED SOLUTION
Avatar of Ian Pattison
Ian Pattison
Flag of United Kingdom of Great Britain and Northern Ireland image

Link to home
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
Start Free Trial
Avatar of SuperTaco
SuperTaco

ASKER

Sweet, I'll give that a try.  Nothign else I need to set up?
Shouldn't be.

You can use wonderful tools such as MetaGeek InSSIDer to check wireless coverage, but assuming both points have a wired connection to the switch etc, then you've got everything you need.
Key points:

1] Use the same SSIDs on each AP.
2] Attach the SSIDs to the same VLAN on each AP.
3] Use the same security/encryption and preshared keys (if applicable) on each AP.
4] Use different channels.
5] Ensure that your APs coverage areas 'overlap' eachother.

This will allow seamless roaming.  WDS isn't really needed unless you're using RADIUS authentication.
@craigbeck
Without WDS and FRS what is the advantage of having the access points on the same SSID? I was under the impression that WiFi clients wouldn't change channels to "roam" (as a cellphone) onto a different channel until they had lost signal completely.
WDS does not give any advantages here.  There are only 2 APs and no RADIUS authentication, so therefore you don't need cached authentication credentials or dynamic radio resource management.

When a client is connected to the AP it will continue to remain associated even if it sees an AP with a stronger signal as long as its link remains within a certain tolerance or threshold.  If the client doesn't need to move, generally it won't.  Of course this isn't always the case (due to drivers, config, manufacturer's proprietary extensions, etc.), but it is with Cisco's APs.

The SSID should be the same so no reconfiguration is required, and the WLAN parameters absolutely have to be the same to allow handover from one AP to the other within an acceptable time-frame (as to appear as though the link never drops).
@craigbeck thanks!  I was 99.9% sure that I was correct on the "won't automatically roam to a stronger signal", but couldn't find anything to back it up. I suppose I should get another Cisco AP to lab up WDS....