Hello All,

We've encountered an odd problem with some new Lenovo R400 laptops using Intel 5100 wireless (with latest drivers) and our Cisco wireless network. If one of these clients connects to an 802.11n or WMM-enabled SSID, and a large file transfer is started, traffic stops passing for (about) 5 to 40 seconds periodically. We've been working on this issue with Cisco, trying different settings and WLC versions (using 5.1.151.0 in production and 5.2.157.0 in testing), but no root cause yet. I was wondering if anyone else was seeing the same, or successfully using 5100s under this type of environment.

Many thanks,

Brady Alleman

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