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350 series client card

Interface Dot11Radio0, Deauthenticating Station 000b.fdd6.1108 Reason: Previous authentication no longer valid

I have an enduser that keeps dropping connection. I see in the logs of the 1120 AP the statement listed above. I have many other users off the same AP and are ot having issues. Windows XP is the OS, I have updated the drivers and firmware for the 350 series PCI card. She is in good signal.

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Re: 350 series client card

This type of error is usually because of RF interference. When the AP sends a packet to the client, the client must ACK this packet back to the AP, if the AP receives no ACK from the client, it will resend this packet. It will continue this process for 16 times (default config) before assuming the client is off the network now (person moved out of range or powered off their computer) and will remove the client from its association table. I would verify coverage via a site survey, looking at not only signal strength, but also signal quality.

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