topic RE: no bss info at Access Point in ExtremeWireless (Identifi)

no bss info at Access Point

JohanHendrikx — Wed, 13 Sep 2017 15:38:00 GMT

One on th Ap's has no BSS info after losing
connection with the controller.

AP is approved and Wlan’s are connected.

Whats wrong ?

RE: no bss info at Access Point

Sam — Wed, 13 Sep 2017 15:42:00 GMT

Hi Johan,

Is the AP local or foreign to the controller?

- Sam

RE: no bss info at Access Point

Sam — Wed, 13 Sep 2017 15:42:00 GMT

Article for reference:
https://gtacknowledge.extremenetworks.com/articles/Solution/Access-Point-radio-is-not-showing-a-chan...

RE: no bss info at Access Point

JohanHendrikx — Wed, 13 Sep 2017 15:42:00 GMT

Local

RE: no bss info at Access Point

Nathiya_M — Wed, 13 Sep 2017 15:47:00 GMT

Hi,

From the screenshot i see no channel and power selected for the AP.
Is it a new AP?

Regards,
Nathiya M

RE: no bss info at Access Point

JohanHendrikx — Wed, 13 Sep 2017 15:47:00 GMT

No it isn't a new one. It was working fine till it lost the connection.

RE: no bss info at Access Point

Ronald_Dvorak — Wed, 13 Sep 2017 15:47:00 GMT

is the AP green in the "AP availabilty" report

RE: no bss info at Access Point

JohanHendrikx — Wed, 13 Sep 2017 15:47:00 GMT

Yes it is.

RE: no bss info at Access Point

Ronald_Dvorak — Wed, 13 Sep 2017 15:47:00 GMT

is the AP on the same location/subnet as the controller or remote via i.e. VPN

RE: no bss info at Access Point

JohanHendrikx — Wed, 13 Sep 2017 15:47:00 GMT

The ap is on a remote site via VPN

RE: no bss info at Access Point

Sam — Wed, 13 Sep 2017 15:47:00 GMT

Johan,

I'd advise getting a case open with GTAC so that the AP config logs etc can be looked at.

- Sam

RE: no bss info at Access Point

Ronald_Dvorak — Wed, 13 Sep 2017 15:47:00 GMT

What's the MTU that you've set on the AP.

RE: no bss info at Access Point

JohanHendrikx — Wed, 13 Sep 2017 15:47:00 GMT

The MTU is 1500

RE: no bss info at Access Point

AntonS — Wed, 13 Sep 2017 15:47:00 GMT

try to set a lower mtu in ap static configuration e.g. 1300
the wassp tunnel from ap to controller has DF bit set, which makes problems in WAN/VPN environments

RE: no bss info at Access Point

JohanHendrikx — Wed, 13 Sep 2017 15:47:00 GMT

That was the solution.

RE: no bss info at Access Point

Ronald_Dvorak — Wed, 13 Sep 2017 20:25:00 GMT

Unfortunately you can't trust the green AP in the "AP Availability" report in case the AP is connected via VPN tunnel / tunnel with lower MTU.

The only thing that shows the correct info in my experience is the controller log.

If the tunnel MTU is not set correctly the last message (bottom to top) during the AP authentication is missing in that case.

So if you run into an issue with a remote AP always check whether you'd find the "blacklist success..." message in the log.

RE: no bss info at Access Point

AntonS — Wed, 13 Sep 2017 20:25:00 GMT

when looking at the report Wireless AP Availability
have a look at the uptime displayed for the AP
if there is a uptime displayed, the tunnel from AP to controller should be up

RE: no bss info at Access Point

AntonS — Thu, 14 Sep 2017 11:54:00 GMT

Dear Extreme Networks Employees,

in our setup almost every AP is connected over WAN/VPN.
when deploying new aps, the get the default settings provided in AP->Global Configuration
but there is no Global Setting for Tunnel MTU
so this setting has to be done on every AP manually

is it possible to make a global configuraton for Tunnel MTU?

RE: no bss info at Access Point

Sam — Thu, 14 Sep 2017 11:54:00 GMT

Hi Anton,

If you go to AP on the top menu in the Gui, then APs from the side menu > select all APs to be configured > actions > multi-edit > scroll down to static configuration. There you will find Tunnel MTU.

Hope this helps.

- Sam

RE: no bss info at Access Point

AntonS — Thu, 14 Sep 2017 11:54:00 GMT

Thank you Sam, that helps so I don't need to set it an every ap, but it is an additional step. if the tunnel MTU would be a global setting then there would be no additional step.
BR Anton