5760 Clients loose connection to everything but WLC

[Kyle Fine]

Hello Everyone,

I've experienced this issue on three seperate occasions now. What happens is that a connected client will suddenly loose connectivity to everything but the ap registration address of the 5760 wireless contorller. A reset of the affected AP resolves the issue. I believe it's occuring on a per ap basis as opposed to globaly. It's as if the AP looses its mind and isn't encapsulating the traffic correctly in the capwap tunnel. I'm not looking for a resolution as that is probably a code upgrade which is not available. Just wondering if any one else is experiencing or heard of this issue.

Switch Ports Model              SW Version        SW Image              Mode  

------ ----- -----              ----------        ----------            ----  

*    1 6     AIR-CT5760         03.03.01SE        ct5760-ipservicesk9   INSTALL

AP Model 3702I

Thanks,

Kyle

[Scott Fella]

What happens if you restart the wireless NIC?

Thanks,

Scott

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[Kyle Fine]

The client attempts to reconnecto to the SSID but is not able to obtain DHCP, which is assume is because it cant ACK the DHCP offer but I haven't done a packet capture. I'll get a wireshark capture when it happens again.

[Scott Fella]

This isn't happening when users are switching to different SSID's?

Thanks,

Scott

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[Kyle Fine]

No. This is occurring while the client is attempting to sustain a connection to a single SSID (not switching ssids). This has happened to APs in different AP Groups and happens to all SSIDs being broadcast by the AP regardless of what vlan they are tied back to.

[Scott Fella]

Kyle,

Your probably better off opening a TAC case on this to get it resolved faster.

Sent from Cisco Technical Support iPhone App

[Rasika Nayanajith]

What happens is that a connected client will suddenly loose connectivity to everything but the ap registration address of the 5760 wireless contorller. A reset of the affected AP resolves the issue

Sounds like a bug for sure , talk to TAC as scott suggested.

Update us whatever the TAC findings

HTH

Rasika