My boss came to me today asking me why one of the phones he was using went into "Leaving Service Area". He basically had to reboot the phone.
Our infrastructure consists of over 1100 AP's. These AP's are spread over 3 WLC 5508's running 220.127.116.11. We are running the latest code on the 7925G's. This is the first time I've seen this. Our WLAN only allows "A" radio. We have basically followed the 7925G deployment guide.
The only thing I haven't done is disabled 36, 48, 54 Mbps data rates because we have mobile carts running on A/G radios.
Any ideas why a phone would do this when there is adequate coverage.
792x phone may not reconnect when invalid 5 GHz beacon received
Symptom: 792x phone may not reconnect when invalid 5 GHz beacon received.At the time when the 792x phone is in the bad state, in Settings > Model Information, the phone's MAC address shows as blank.Conditions: 792x phone going out of range then comes back in range when set to scan 5 GHz.Workaround: Power cycle the phone. Use 802.11b/g only mode.
Transferring Crash file from standby: Login to the Active WLC in HA.
From CLI: (Cisco Controller) >transfer upload datatype crash (Cisco
Controller) >transfer upload filename (Cisco
Controller) >transfer upload mode tftp (Cisco Controller) >transfer
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