Can you clarify what you mean by segregating the subs to multiple color codes? Are you setting a new secondary color code on just a few SMs and then switching the AP color code so those few register and the remainder of the 40 cannot? Or do you have multiple APs at the site and you are using color codes to force most of the SMs to another AP?
What up and down modulation are you seeing? Are most of the SMs at 2X both directions? What do you get on linktests, are they at least 90%? Like George says, run spectrum analyzer, also run remote SA on some subs in various directions. What about upstream traffic? If you are saturating the upstream (perhaps a subscriber running Bit Torrent or cloud backup or infected with a spambot) you could run out of upstream capacity or control slots, and downstream capacity will go unused because requests and acks cannot get back up the pipe. In the 2.4 band, interference is always the first thing I think of. Interference at the AP will screw up everyone’s upstream and could cause the symptoms you are seeing. If it’s another Canopy operator, you might be able to sync with them. Otherwise, it’s look for a clearer channel. We used to avoid 2435 like the plague, but these days it can actually be the clearest channel, although some customer routers might need reprogramming if like us you have them manually set them to channel 6. From: George Skorup (Cyber Broadcasting) via Af Sent: Friday, November 28, 2014 2:09 PM To: [email protected] Subject: Re: [AFMUG] Suggestions on Canopy PtMP Issue Ethernet/CRC errors? What do linktests to the SMs return? Is it possible you have SM to SM traffic on the same AP overloading it? Enable the throughput monitoring tool on your APs. Besides all that, what about interference, have you ran the spectrum analyzer? This is a two-way street. You can have noise at an SM which will get it very crappy link efficiency. Like their router wifi channel is the same frequency (or close to it) that the SM is trying to listen on. On 11/28/2014 1:50 PM, Heith Petersen via Af wrote: Earlier I posted that I was having some through put issues. I have a 2.4 AP with 40 subs. I started having issues where customers were having horrific ping times on the AP, the majority anyways. I would still have customers that were stellar most of the time. Firmwares were all over the place, all on the same level as well as AP with the same issue. I had segregated the subs to multiple Color Codes, as times I had as few as 1 to 4 subs registered at a time. If I swapped color codes to a different code and allowed 4 different users on, at times the issue would follow them as well. � I had a tech swap out the AP 2 evenings ago, and to my dismay I noticed the issue right away. Today I re-routed a back up back haul to that site and the AP is the only device pulling service from that BH. I have 2 more sites that feed off of this tower and they are not experiencing the issue. This issue crept up on us last Friday night. I have only heard from a handful of users so I don�t know if everyone is experiencing the issue, or at least noticed. For the most part its really bad at time during prime time, however today and during the day Monday it was real noticeable. From what I can tell on my MikroTik is that its really only handing out about 3 meg right now. This network is bridged, I have some Tiks in place to start routing and also for management purposes. I had the same results from just using a standard switch. I am not experiencing any other issues on that network. All radios, except for 4, are NAT enabled. The other 4 at times I would have totally disabled or not associated with the same results � We were suspecting a bad Canopy radio mucking up the AP, which we have seen but its rare. But like I said we have seen it with only a few users associated. I cant imagine that I had several bad radios at once. The AP is swapped out. Could it be a network issue? In all my years of using Canopy I have never seen this issue. I fear that my BS skills may be wearing thin on my customers, but I am unsure of where to look � Thanks Heith �
