restart wireless controller C5210


Userlevel 1
How come when I restart the wireless controller C5210, all of the radio channels show "off", even though none of the APs are down? I want to be able to see what channels the APs are using, so I can change them in case interference.


11 replies

Userlevel 7
Hello,

If the access point is on the backup controller, you will not get stats from the access point until it's released back to the local controller.

Take a look at the following knowledge document....

http://gtacknowledge.extremenetworks.com/articles/Solution/Access-Point-radio-is-not-showing-a-channel-or-power-level
Userlevel 1
Doug wrote:

Hello,

If the access point is on the backup controller, you will not get stats from the access point until it's released back to the local controller.

Take a look at the following knowledge document....

http://gtacknowledge.extremenetworks.com/articles/Solution/Access-Point-radio-is-not-showing-a-channel-or-power-level

Thanks Doug! That worked! When restarting primary controller: Why do the APs show up active on the foreign controller and not active on their primary controller? I was just wonder why the APs do that?
Userlevel 7
Doug wrote:

Hello,

If the access point is on the backup controller, you will not get stats from the access point until it's released back to the local controller.

Take a look at the following knowledge document....

http://gtacknowledge.extremenetworks.com/articles/Solution/Access-Point-radio-is-not-showing-a-channel-or-power-level

If any controller resets in a pair, all the access points will fail over to the second controller from the pair that's still up. We don't automatically release the access points back to the controller when the controller is back on line. It's gives you time to address the reason why the controller went down in the first place.
Userlevel 1
Doug wrote:

Hello,

If the access point is on the backup controller, you will not get stats from the access point until it's released back to the local controller.

Take a look at the following knowledge document....

http://gtacknowledge.extremenetworks.com/articles/Solution/Access-Point-radio-is-not-showing-a-channel-or-power-level

so i just found out, that it was a backup controller. when the primary restarts, it kicks all its aps off which then go to the foreign controller(backup). right?
Userlevel 7
Doug wrote:

Hello,

If the access point is on the backup controller, you will not get stats from the access point until it's released back to the local controller.

Take a look at the following knowledge document....

http://gtacknowledge.extremenetworks.com/articles/Solution/Access-Point-radio-is-not-showing-a-channel-or-power-level

Correct, we call that feature Availability. Some customers will split the ap load 50/50 between controllers or use a second controller as a hot standby in case the primary one goes offline.
Userlevel 1
Doug wrote:

Hello,

If the access point is on the backup controller, you will not get stats from the access point until it's released back to the local controller.

Take a look at the following knowledge document....

http://gtacknowledge.extremenetworks.com/articles/Solution/Access-Point-radio-is-not-showing-a-channel-or-power-level

we were having issues with clients getting on the wlan SSID, so the manager decided to restart our wireless controller.
Userlevel 1
Doug wrote:

Hello,

If the access point is on the backup controller, you will not get stats from the access point until it's released back to the local controller.

Take a look at the following knowledge document....

http://gtacknowledge.extremenetworks.com/articles/Solution/Access-Point-radio-is-not-showing-a-channel-or-power-level

We have it setup up for 50/50 right now.However, when we get to the point of adding more APs, we have the foreign controller for more room. In the future, if we have enough APs, using 2 controllers; will the second controller still be able to backup all the APs from the primary controller and still be able to manage all its own APs?
Userlevel 7
Doug wrote:

Hello,

If the access point is on the backup controller, you will not get stats from the access point until it's released back to the local controller.

Take a look at the following knowledge document....

http://gtacknowledge.extremenetworks.com/articles/Solution/Access-Point-radio-is-not-showing-a-channel-or-power-level

There can be many reasons why you may have connection issues with wireless clients. If you are still experiencing issues you may want to give us a call. Typically we will ask you for specific details like...

- Is the connection issue in one area or all throughout the wireless system?
- Is the connection issue happening with a specific client type? (Apple,Chromebooks, etc...).
- Is this only on one service (SSID) or all?
- Are clients getting IP's but unable to pass data?
- Any authentication involved?

The Tech when you contact support will also ask you to generate a Tech Support file from the controller with the problems on "Logs".

http://gtacknowledge.extremenetworks.com/articles/How_To/How-to-Collect-a-Tech-Support-File-From-a-Wireless-Controller
Userlevel 7
Doug wrote:

Hello,

If the access point is on the backup controller, you will not get stats from the access point until it's released back to the local controller.

Take a look at the following knowledge document....

http://gtacknowledge.extremenetworks.com/articles/Solution/Access-Point-radio-is-not-showing-a-channel-or-power-level

To answer your question...

We have it setup up for 50/50 right now.However, when we get to the point of adding more APs, we have the foreign controller for more room. In the future, if we have enough APs, using 2 controllers; will the second controller still be able to backup all the APs from the primary controller and still be able to manage all its own APs?

A controller has a max amount of access points it will support locally and in fail over (foreign)

Total APs supported per controller APs supported in standard mode
V2110 496 (248 local/248 foreign) 248 locally configured
C25 100 (50 local/50 foreign) 50 locally configured
C5210 2000 (1000 local/1000 foreign) 1000 locally configured

Licensing is done based on locally configured access points, you don't need licenses for redundancy, it's built in until you reach the max total a controller can support (Total APs supported per controller).
Userlevel 1
I think this is the local controller. We have 2 controllers, the other one is the foreign controller; which we have not used yet.
Userlevel 7
On the active controller please open GUI > Reports > APs > active APs.
Is the AP listed that you are talking about ... if not try the same on the foreign controller and let us know the result.

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