WLC 5508 : session disconnected when one lag-port is down.

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Feb 22nd, 2010
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I have a WLC 5508 ( version 6.0.182).

When the port1 and port2 are connected ( The switch is configured with a etherchannel in forced mode) everything works fine: There is traffic on the 2 ports.

When I disconnect one of the 2 ports, I can still ping outside with my PC client, but all my tcp sesssions goes down and I even cannot restart my session. The only way I found  is to do a "Disconnect / Reconnect"  on my  PC  wireless connection.

Do you know this probleme ?

Is it a way to avoid it ?

Michel Misonne

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dselfridge Mon, 11/15/2010 - 06:29
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Hi Michel,

I have the very same problem (ver 7.0.98).

Did you get anywhere with this?

Kind Regards,


mmisonne Mon, 11/15/2010 - 07:38
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Hi Dan,

Unafortunately, I didn't try since that time.

Please tell me if you get any information about this.



Nicolas Darchis Mon, 11/15/2010 - 23:27
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  • Cisco Employee,

CSCth12513 LAG fail-over does not work on CT5508

This bug is fixed in the special release available through TAC : and 7.0.xxxx

Hope this helps.



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