any new information on this subject?
Here is my story:
We have a "x-brand" model AP thats been having really odd issues (somewhat similar to the association issues MT has), that we were hoping to replace with a new MT 500r5 board and a XR2 radio. We setup the AP correctly and tested it against a cisco 340 pci card (prisimII chipset), and a laptop based netgear wag511 (atheros chipset, version 5.0 card) and they all associated fine to the ap bridge and could surf 100% ok.
So we went up to the tower, which is NOT fun, on a small mountain, ~3000 ft up, and then climbed the tower (radio is mounted ~70 feet up on a 100 foot tower). Swapped out the "x-brand" radio, with he new MT AP and boom, no one associated. So we turned if off, and tried again, checking all connections to antenna, including internal pigtail. Turned it back on, and 1 person associated. We asked them to try the connection and they soon De-associated (is that a word?).
We then decided it wasnt going to work without some sort of testing, and put the old radio back in service.
Let me go into detail why we were trying to replace this radio in the first place. We had an older model (wrap board, with unknown radio card (I dont remember right now)) "x-brand" AP running very well, except that it would randomly drop all connections and not allow them to reassociate. We had to login to the AP and manually resubmit the MAC addy ACL list and everyone one could back up, or reboot the radio. The manufacture has NO idea why this is happening and say that we are the only reported incident of this problem. So we decided enough was enough after being paged at 3am when customers were dropped and RMA'd the radio. The new x-brand" we received was different hardware, but did have a engeinus branded radio card (based on the mac addy 00:02:6f, and the "x-brand" software has settings for "atheros" hardware). We setup the radios to match 100%, to try and see what would happen with this different hardware. Lo and behold, the same problem started to occur, only much more frequently. We contact "x-brand" which once again, was baffled. We switched out the POE adapter, had them modify settings in the radio to drop unwanted packets, and tweaked every other setting we could think of. Nothing worked. It now loses the ACL file and drops all customers at least 1 daily (before it could go almost a week).
Now a bit about the CPE end of things, we had/have 76 client MACs that are allowed to use this AP (59 engeinus 2811 bridges), granted I don't think I've ever seen more than 40 ever associated at the same time. (customers have a habit of turning their radios off, with their computers, which is fine). Most of the CPEs are Engeinus branded 2811CB3+ Deluxe radios, which is running a prisim chipset, and smartbridge 2110s and such. We have 1 or 2 older customers still using Cisco 350 cards (if its not broke, dont fix it!).
From what ive read tonight, of the closed threads, I am truly happy. At least I know there IS A KNOWN problem. Now I also know that this isn't actually being fixex, and it has been a problem for a while.
We have many APs, varying from engeinus, to smartbridges (old and new air nexus), to "x-brand", and now MT. This tower is our most heavily used, and has a LARGE number of clients, on many APs, 2.4, and 5.7 (Motorola canopy). We have had no problems with association with any other AP, but as far as I know.
The only APs in our system currently that I know are Atheros based, are the "x-brand" and the new MT. Which are the only 2 radios having issues with our mixed CPE base.
Im going to try using the engeinus branded ahteros radio instead of the xr2, and i prolly will also try the R52H, we got at the same time. I know many have tried this already, and I really don't think it will work. I will also try the enable/disable thing, to see if I cant get others to associate that way. I will also try to only have the 2811 CPEs on the access list, or only the smartbridges and see what happens. Ill try also, using the newest beta firmware, as a last resort.
Any ideas to add?
Kyle @ Washington Broadband