topic we have upgraded to 8.3.121.0 in Wireless

BAD TLV ENTRY

driver_288 — Mon, 05 Jul 2021 13:26:32 GMT

Hi!

I have a problem getting 2 1832is to talk to each other... They are both K9C controller capable mobility express App with the same software version 8.3.x. One is set up as a controller and has a fixed IP for the controller part and DHCP for the AP part. second one is joined to the same network and subnet. DNS CAPWAP discovery is used with a DNS record pointing to the controller fixed IP. I can see in the console of the connecting AP that it sends out a CAPWAP request and get an answer from the controller IP. it then starts DTLS setup. this is most of the times followed by a DTLS Teardown and a new discovery is initiated. But occasionally the process continues and I get CAPWAP Status: Join. I can see that it connects to the controller but before the process is done and root should occur I get BAD TLV Received followed by a packet was received that caused the connection to close and everything starts over again...

I have tried different cables and switch ports, no change... the only thing I can think of is that the switches are L2 but not L3 capable and also non managed. I told the customer that they need to get a managed L3 switch since they want to enable the guest network, but I didn't have one to test with.

Does anyone have an idea or have seen this before?

/Hasse

Hi,

ruimartins1000 — Tue, 09 May 2017 16:37:26 GMT

Hi,

Did you come up with something? I'm experiencing the same with a small setup of 3 1832's with ME in version: 8.3.112.0

Today we've set the following:

Enabled CleanAir RRM
Disabled lower Data Rates.
Disabled Green IT stuff from Cisco Switch.
Passed the Power Inline config to Critical in the Switch.

Start monitoring the solution again.

I'm having the same issue

Jeremy Scho — Fri, 07 Jul 2017 18:54:20 GMT

I'm having the same issue here. Any ideas on what could be the cause and possible solution?

we have upgraded to 8.3.121.0

ruimartins1000 — Fri, 07 Jul 2017 19:55:14 GMT

we have upgraded to 8.3.121.0

and we had a lot of Interferences. On 5GHz we've found a radar detection that would make the radios reset and go through negotiation again...

good luck,