topic Re: If MSM760 access controller goes offline, do AP's keep working in M and MSM Series

If MSM760 access controller goes offline, do AP's keep working

Jbalch — Tue, 27 Nov 2012 15:38:14 GMT

So let’s say the controller goes off line and the access points at a remote school (managed by the controller) lose power for a few minutes and then come back online. Will the access point be able to start working again after the reboot and start servicing clients? Or will the APs have to contact the controller to get it’s configuration before it can service clients?

Re: If MSM760 access controller goes offline, do AP's keep working

ChristianE89 — Tue, 27 Nov 2012 15:56:36 GMT

Well that depends on your configuration. Do your APs use bridge mode or do they tunnel the connection back to the controller?

Re: If MSM760 access controller goes offline, do AP's keep working

Jbalch — Tue, 27 Nov 2012 15:58:00 GMT

VSC's tunnel traffic back to the controller

Re: If MSM760 access controller goes offline, do AP's keep working

ChristianE89 — Tue, 27 Nov 2012 16:15:16 GMT

They don't have to. Depends on if you use access Control or not

Re: If MSM760 access controller goes offline, do AP's keep working

Jbalch — Tue, 27 Nov 2012 16:19:32 GMT

I'm actually trying to help someone else out with this problem. I'll find out about the access control. Could you expand on this a little....Thanks

Re: If MSM760 access controller goes offline, do AP's keep working

ChristianE89 — Tue, 27 Nov 2012 16:33:36 GMT

The acesscontrol function is suitable when using a guest network. You will need to look after the setting "Always tunnel client traffic" under Client data tunnel. This setting will only be available when using access control.

Re: If MSM760 access controller goes offline, do AP's keep working

Jbalch — Tue, 27 Nov 2012 16:43:41 GMT

OK - Thanks for the help. I'm actually reading through the 760 mgmt guide right now...I may have some further questions later. Thanks again!

Re: If MSM760 access controller goes offline, do AP's keep working

Jbalch — Tue, 27 Nov 2012 19:09:29 GMT

OK, so with no access control or authentication and the VSC's are not tunneling traffic back to the controller - if an AP rebooted due to a power problem and the controller was offline, would the AP pass traffic as it was initially configured to do so with the controller down?

Re: If MSM760 access controller goes offline, do AP's keep working

tschaps — Wed, 28 Nov 2012 05:35:50 GMT

No, the only time an AP will retain its configuration is if it's set to autonomous mode. In controlled mode, it can continue to function when the controller goes down as long as the AP doesn't lose power. When it boots up, it is useless until it finds a controller.

Re: If MSM760 access controller goes offline, do AP's keep working

Richard Litchfield — Fri, 30 Nov 2012 13:50:18 GMT

The AP will continue to operate (with the existing current) irrespective of connectivity back to the controller until the AP loses power.

After the AP loses power, it will not do anything until it has connected to the controller and downloaded the current config.

Re: If MSM760 access controller goes offline, do AP's keep working

TrvTch — Tue, 05 Mar 2013 11:57:01 GMT

i am having the same problem and could not solved yet. when i plug off power cable or lan cable of msm760 , ap's lose configuration.

i'have tried lots of things but not solved it.

Can any one help me ?

Re: If MSM760 access controller goes offline, do AP's keep working

Richard Litchfield — Tue, 05 Mar 2013 14:07:50 GMT

You should start a new thread with your specific config and questions. It sounds like you are running access-controlled mode (ie all traffic tunnelled back to the controller) - the APs don't lose config, but they do lose connection, and since all the traffic in this mode passes through the controller, no traffic will flow.
Try optimised mode, local hand-off, etc. Then the controller is not in the traffic path, and the AP will continue to operate independently of the controller.

Re: If MSM760 access controller goes offline, do AP's keep working

TrvTch — Wed, 06 Mar 2013 10:26:03 GMT

Hi again,

you wrote; "Try optimised mode, local hand-off, etc."

and i couldn't understand how can i try optimised mode ? can you give a sample ?

thnx.