Re: Reg: CISCO WLC 9800 Sending COA request

chetankumar1542 · ‎03-13-2023

Hello,

I am attempting to send a COA request with Request ID 44 by utilizing the Acct Session ID and Calling Station ID that were extracted from the Access Request Packet. I have sent this request over port 1700, which has already been enabled on the WLC.

However, I have received a NACK response with ID 45 from the WLC. Could you please provide assistance in resolving this issue?

marce1000 · ‎03-13-2023

- Perhaps full client debugging may provide more insights : https://logadvisor.cisco.com/logadvisor/wireless/9800/9800ClientConnectivity , you can have these analyzed with https://cway.cisco.com/tools/WirelessDebugAnalyzer/ , (also check the controller configuration with https://cway.cisco.com/tools/WirelessAnalyzer/ use the output of show tech wireless )

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! '

Rich R · ‎03-13-2023

That normally means your CoA packet is missing mandatory attributes (AVP) which the WLC requires to definitively match a unique client.
Calling Station ID is one of them - that should be the client MAC address - required by Cisco.
Another is NAS IP address. That is per RFC 5176

What is the complete list of attributes you're sending?

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