Re: CAPWAP Tunnel gets down randomly

Tigrasino Tigrasino · ‎10-15-2020

Hello All,

We have a Strange issue , our Capwap tunnel between central WLC and Anchor WLC gets randomly down , and we run eping and mping between the Controllers the Tunnel gets back up. This issue is happening randomly but recently it happens frequently. And at each time we have to run the eping and mping to resolve this issue

Central WLC Model and version : AIR-CT3504-K9 , 8.5.131.0

Anchor WLC Model and version : AIR-CT2504-K9 , 8.3.102.0

we have a FW between the 2 WLCs

please anyone has a idea about this behavior his explanation and solution for this issue are very welcome.

Many thanks in advance.

MHM Cisco World · ‎10-15-2020

check FW, see if there is CPAWAP UDP traffic in conn or not,
check this when the CAPWAP is down.

marce1000 · ‎10-15-2020

- Additionally examine the logs on both controllers when this happens.

M.

-- Each morning when I wake up and look into the mirror I always say ' Why am I so brilliant ? '
When the mirror will then always repond to me with ' The only thing that exceeds your brilliance is your beauty! '

Sandeep Choudhary · ‎10-15-2020

1. Also its not must but try with same software version on both WLCs.

2. Remove the mobility IP/Mac completelz from both WLCs and add it again.

These are just workarounds..

Tigrasino Tigrasino · ‎10-20-2020

Thank you to all of your advices guys, we doublechecked the log on the FW and the WLCs during the issue and they did not show any thing as abnormal.

Any way we will get back with more details if this issue happens again

for upgrading the software that the WLC would have the same Software I have to say that we have the same scenario in another site and they are working properly with different software.