Jack, when your problem occurs, does brctl report that the spanning tree algorithm has blocked ports with pathcost 1 in favor of ports with pathcost 300? > -----Original Message----- > From: Jack Culpepper [mailto:jack@xxxxxxxxxxxx] > Sent: Monday, July 21, 2003 5:29 PM > To: bridge@xxxxxxxxxxxxxxxxxx > Subject: [Bridge] problems with setpathcost feature > > > Hi Folks, > > I have been using the bridging code to build out a small > wireless network > with five nodes. I am not sure if anyone on this list is > familiar with > OpenAP (small linux dist for running on x86-based AP > stations) or the HostAP > driver (wireless driver for Prism2 chipset), but that's what > I'm using. The > nodes in the network are "loosely" connected -- that is, the number of > connections each node has varies from about 1-4. I am using > STP to remove > loops. However, sometimes this results in STP "settling" on > using links that > have low signal strengths. This makes the performance of the > network drop, > and thus I would like to take signal strength into account > via pathcosts. > Eventually, I will be automatically computing pathcosts by > using some formula > that involves the inverse of the signal strength (high signal > strength => low > path cost). However, as a quick test to make sure the > pathcost stuff was > going to work like I want it to, I tried to manually impose > my own beliefs > about which links should be used by simply setting them to > have pathcost 1, > and all other links to pathcost 300. To my disappointment, > this did not work. > I know it didn't, because I am using the patch I just > submitted to discover > the actual path my packets are following. Has anyone on the list used > pathcosts successfully? Is there a trick to doing it besides simply > 'brctl setpathcost br0 wlan0wds0 1'? Does anyone have any > reason to believe > the pathcost code does or does not work? Thanks very much, > > Jack > > _______________________________________________ > Bridge mailing list > Bridge@xxxxxxxxxxxxxxxxxx > http://www.math.leidenuniv.nl/mailman/listinfo/bridge >
