CSCvi02106 - Cisco 2800, 3800, 1560 APs when connected to a Cisco Switch CDP-4-DUPLEX_MISMATCH log is seen - 8

[rahul.shinde@orange.com]

As per bug fixes, CDP-4-DUPLEX MISMATCH issue on LAG port (Aux connected port) fixed in IOS version 8.3.150.0

But in our case  we have WLC3504 with 8.5.135.0 but still we are getting log on switch model WS-C3650-48PS-S and C9200L-48P-4G-E. Kindly suggest as we don't want to go with filed notice solution.

AP model 2800 series.

Mar  5 11:43:21.486 UTC: %CDP-4-DUPLEX_MISMATCH: duplex mismatch discovered on GigabitEthernet1/0/44 (not half duplex), with ALHR30275 GigabitEthernet1 (half duplex).

r  5 11:42:39.359 UTC: %CDP-4-DUPLEX_MISMATCH: duplex mismatch discovered on GigabitEthernet4/0/48 (not half duplex), with ALHR30288 GigabitEthernet1 (half duplex).

Mar  5 11:42:45.498 UTC: %CDP-4-DUPLEX_MISMATCH: duplex mismatch discovered on GigabitEthernet3/0/42 (not half duplex), with ALHR30282 GigabitEthernet1 (half duplex).

Mar  5 11:42:53.499 UTC: %CDP-4-DUPLEX_MISMATCH: duplex mismatch discovered on GigabitEthernet1/0/48 (not half duplex), with ALHR30277 GigabitEthernet1 (half duplex).

Mar  5 11:43:04.852 UTC: %CDP-4-DUPLEX_MISMATCH: duplex mismatch discovered on GigabitEthernet4/0/44 (not half duplex), with ALHR30286 GigabitEthernet1 (half duplex).

[Leo Laohoo]

I do know this bug was fixed in 8.5.14X.X and later.

[ccg-security]

Hi, We just upgraded our 5520 controller yesterday from 8.3.143.0 to 8.5.161.0 and we experienced the same issue. Access point 2800 series showing medium power on wlc and radios were down, we just enabled CDP on the Access switch Cisco c9200 and Access point went radios went up then POE status went full power. any IOS recommendations. Thank you

[Leo Laohoo]

So the switch originally have CDP disabled?