12-04-2019 04:13 PM - edited 07-05-2021 11:23 AM
Hi all,
I have three controllers in Mobility mode. the Mobility Anchor is spontaneously flapping and I have tried to remove the mobility features and readd the peers. It was fine for a short time. Then after a few hours, it started flapping again. So, I'm wondering, how can I capture traffic on these controllers to understand what the cause. Could someone please help with this information? Here are the traps from the Anchor below. Any suggestions would be greatly appreciated.
Wed Dec 4 14:40:59 2019 | Data path to mobility member 10.10.51.xx is up. | |
10 | Wed Dec 4 14:40:59 2019 | Data path to mobility member 10.10.51.xx is down. |
Wed Dec 4 06:56:22 2019 | Data path to mobility member 1010.51.xx is up. | |
93 | Wed Dec 4 06:56:22 2019 | Data path to mobility member 1010.51.xx is down. |
94 | Wed Dec 4 06:52:22 2019 | Data path to mobility member 1010.51.xx is up. |
95 | Wed Dec 4 06:52:22 2019 | Data path to mobility member 1010.51.xx is down. |
12-04-2019 05:56 PM
Are these WLCs having same version of software ? Did you notice any logs on switches that connect these WLCs , I would think some sort of layer 1 or layer 2 issue causing those flapping.
There is no easy way of capturing packets directly from WLC. So you may have to SPAN WLC trunk port traffic filtering those other WLC IP, in order to see what's going on.
Challenge is how to capture this exact flapping moment.
HTH
Rasika
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12-04-2019 06:28 PM
12-05-2019 07:03 AM
12-05-2019 02:34 PM
i increased the Keep Alive Count count and Keep Alive Interval on the Anchor and on one of the Peers. Initially, it was set to 3 and 10 respectively for the count and interval. After i had increased the keep alive counters from 3 and 10 to 20 and 15 respectively to allow for mobility tunnels to be more tolerant to packets lost. All devices have been stable for the past couple of hours now. I'm hoping that this fixes the issue. Thank you all for your inputs.
12-05-2019 11:43 PM
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