AIR-AP3802E-B-K9 unable to join the wireless controller

[ugwuugochukwuk]

Hello All,

I have an ap model of AIR-AP3802E-B-K9 which cannot join the WLC, I have performed reset on the AP and yet it does not join the controller. It picks an IP address but registering to the WLC is the issue.

I have attached the log from the AP.

Thanks in anticipation!!!

[Flavio Miranda]

You problem is this:

"Max retransmission count exceeded, going back to DISCOVER mode."

This can be recheability problem. Make sure links is Ok.

[ugwuugochukwuk]

Hello Flavio,

The link is OK

[jagan.chowdam]

Also, Can you share

1. WLC: sh sysinfo;
2. WLC: sh time;

Verify

• Country Code is accurate
• NTP is configured

Put the AP on the same VLAN as WLC and check

CJ

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[patoberli]

The -B AP variant is a bit newer than the -A variant, both are for Americas (I think North America only). So which software release is running on the WLC?

[ugwuugochukwuk]

Hello Patoberli,

The WLC runs software version 8.5.140.0.

Regards,

[Rich R]

CAPWAP detected next hop MAC changed from 0007.B400.0E01 to 0007.B400.0E02

Unstable WAN link switching between primary and backup routers maybe, or duplicate IP configured? 

[ugwuugochukwuk]

Hello rrudling,

The WAN link is stable, More than 3 Access points have registered with the controller since then. I don't think it's a WAN link issue.

Thanks 

[Rich R]

Well then why is the AP detecting the next hop MAC address changing?

[Manuka Rajapaksha]

What is the Controller model? 

Did you set the dhcp option 43 correctly with the WLC IP?