Plug a laptop into the switch that collates your four APPO's and run ethereal (http://www.ethereal.com - it's free) and set it to capture packets on the laptop. This will show you whats traversing the network. If broadcast storms are occuring, you will see large numbers of packets appearing, and when you finally view the contents - you will be able to determine the offender. Ideally you want to ensure you either have a router at the tower (to prevent broadcasts from propogating), and ensure your customers have their CPE connected to a router, and not a hub or a switch (as I have seen done). Hubs are especially dangerous, as they forward all traffic out of every port, and as SmartBridge CPE can mask 64? MAC addresses in it's own, if a customer is copying to a local machine on their network you will receive their broadcasts. Consider that if they are running on a 100Mbit network, your smartbridge will be hogging all the AP's attention as it forwards the maximum amount (of pointless crap) it can to your tower. Still, an ethereal dump of traffic will show you if this is occuring and who's responsible.
----- Original Message ----- From: "shoffman" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Friday, October 31, 2003 4:49 PM Subject: Re: [smartBridges] Throughput errors on Airpoint Pro Outdoor > Realize that the Smartbridge stuff is pretty sensative so you may be > seeing more of a cross talk effect then your previous gear. You should > see if "tuning down" the clients helps your situation. > > You should be able to see if your storm theory is correct with the > Ethernet statistics on the AP's. > > > Scott > > > -----Original Message----- > From: "Shane Mitchell" <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]> > Date: Fri, 31 Oct 2003 10:06:42 -0600 > Subject: [smartBridges] Throughput errors on Airpoint Pro Outdoor > > > I am a new user of these items with 4 of them on a water tower. Each > > AP > > has approximately 25 clients presently. The old AP's I was using were > > providing about 2.5 mbps at peak, however, we are only getting about > > 1.8mbps at peak now. Also, clients are reporting traffic being > > "Jerky", > > with bursts of speed, followed by lags. I have tinkered with RTS/CTS, > > but it has not improved it, so I have disabled it again. > > > > I am beginning to suspect broadcast storm traffic from each AP to the > > switch and back out to the other AP's, but I'm not sure this is > > correct. > > Any suggestions? > > > > Shane Mitchell > > > > The PART-15.ORG smartBridges Discussion List > To Join: mailto:[EMAIL PROTECTED] (in the body type subscribe smartBridges <yournickname> > To Remove: mailto:[EMAIL PROTECTED] (in the body type unsubscribe smartBridges) > Archives: http://archives.part-15.org > > The PART-15.ORG smartBridges Discussion List To Join: mailto:[EMAIL PROTECTED] (in the body type subscribe smartBridges <yournickname> To Remove: mailto:[EMAIL PROTECTED] (in the body type unsubscribe smartBridges) Archives: http://archives.part-15.org
