Marlon K. Schafer (509) 982-2181 wrote: > Scriv needs to hire a good consultant to come check things out! > big grin
Know any? :D The hard part there would be that it's not, in any way, predictable. We've gone several weeks at a time without this problem appearing, and had days where it showed up several times. Most of the time, I only see it in our network monitor logs, as it came and went within a minute or two. Assuming it's some massive source of interference, I imagine it would be very difficult to triangulate it. (By the time I call even one person to say "fire up your spectrum analyzer," it's gone.) > First, as I recall, this ONLY effects towers within a 15 mile radius. > But it effects ALL towers within that "cell". right????? Yep. I had a nice map that showed all our towers, and which ones were (and weren't) affected. I may try to dig that up, or recreate it. > I've seen customers download or upload massive files (usually ptp stuff) > and open up hundreds of connections and whack a tower. If it's the > right tower and interferes with the other towers anywhere near it. That's probably not the case, as we've recently taken measures to reduce P2P traffic (a Mikrotik box and some pretty harsh traffic shaping rules). Also, I've seen P2P traffic before, and while it usually slows down that specific AP, I've never seen it affect our backhaul or other nearby towers. We're pretty good in terms on "not walking on ourselves." There are no overlaps (AFAIK) between our towers if they're within five miles or so of one another, and facing towards each other. We are using the whole 2.4GHz spectrum, of course, but not all of it in any one place. > There are times when radios go bad and start transmitting OUT of band. > I've seen wifi stuff flood the whole band. > > Amps can do that too. We do have a couple of amps here and there, but I don't think any of them are over 200mW. That'd have to be one heckuva runaway amp to cause that much interference. If it were a bad radio, wouldn't it be a more frequent problem instead of one that randomly shows up for a minute or two here and there? > Is it possible that your 900 and 5 gig gear ALWAYS has a router at the > cpe and the 2.4 doesn't? As I recall the Waverider gear, the ap is a > router, that would keep things that would flow on a switch off of the > 900 system. Not even close. We've got folks with 900MHz gear and 5.whatever that just plug their radios straight into their PCs. (At least I know that's the case with the 900MHz stuff, as we have a lot of residential customers on it; I can't, off the top of my head, think of any 5.3/5.8 customers without a router, but we don't have that many of them - we're mostly using those bands for inter-tower backhaul.) > Are there any towers that are sectorized that point in a direction that > makes them unaffected? I wish... Two of them have two 180-degree sector antennas facing in opposite directions, on opposite sides of a water tower (i.e. with twenty feet of steel and water between them), and both sides are affected equally. David Smith MVN.net -- WISPA Wireless List: [email protected] Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
