I have set up a 851W and had no real problems. The problem I have is the signal strength is erratic varing some 30 db measured with two different meters. At times it appears to loose all it's signal momentarly. I have varied the CCk and OFDM transmitter powers but it had no effect. The erratic signal strength problem doesn't change with distance, 10 feet or 50 feet doesn't matter. I have tried three different PCMCIA cards, Cisco CB21AG-a-K9, Dlink and Linksey and the erratic signal is still there. I have removed and reinstalled the antenna but with no change. I have eliminated all wireless phones, lights and equipment to eliminate the posibility of some form of inside interferance. I have moved the router to different locations and it didn't change the erratic signals. I have other brands of routers which don't display any signal strength problems. Am I missing some setting in the configuration that could cause this?
Thanks for the reply. I have changed the cables and tried every channel several times. I've been using Net Stumbler from the start so I have a few hours worth of logs. I have an Asante router and it doesn't have a problem when using the same channel or channels as the 851W sitting in the same place. Of course only having one of them powered up at a time. Using Net Stumbler I can pick up seven or so other routers and none of them show the erratic signal strength problems. I bought the 851W from Provantage so I guess I'll give them a call tuesday and see if I can get an RMA for this one. Haven't found a way to send it direct to Cisco. I was just hoping that I had made a mistake in configuring this one but after working with it for two weeks I've ran out of ideas.
Follow up, I just received a replacement 851w and it displays the same erratic and weak signal as the previous one. My $70 Asante FR1104 router out performs and is much more stable than this $300 router.
The e-mail I received from Cisco just said that they may have had a bad batch. Both of the 851W's came from the same place with serial nimbers somewhat close. If a bad batch is the problem, hopefully they will get them off the shelf to keep some one else from going through the time consuming flustration I did. I didn't need the added capabilities of th 871W but I needed a router to get my operation back up and didn't want to chance receiving another bad 851W.
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
This is the start of a display filter cross reference between Wireshark
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