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On Tuesday 11 July 2006 22:22, Mark Evans wrote: > > You really don't want to disable the wireless link every time you plug > > your ethernet in, unless you want to break all established TCP > > connections (and probably all UDP ones too (unless you use the same IP > > address on both links - which is not advised due to ARP issues). > > There are a couple of ways around this, the problem with the most > obvious is that apparently the Windows Bridging code dosn't correctly > impliment STP. (Or at least it won't play well with Nortel kit.) STP with windows machines (not tried with XP - customers only use 2k or 2k3 srv, but imagine it's the same in XP) works fine with Cisco 3550's, although i guess your problem may be more related to the BS device's implementation rather than XP. I've not seen that many organisations (infact, only ever 1) using STP over wireless, so can't imagine implementations are paticuraly well tested. > I'm the network admin, most of my users wouldn't know what ssh is and > shouldn't be trying to download anything in the first place. In that case, you really really have no need for actually disabling the wireless card. after posting, i did consider the fact that active TCP connections or anything bound to the wireless interface rather than 0.0.0.0 would continue to use the wlan interface, thus causing more traffic on the wlan than needed. However, if there is no continuous traffic going on, then thats; even less of a problem. > The basic problem is that trying to fit nearly 100 laptops into > an IP network with a netmask of 255.255.255.128 isn't going to > work if they require 2 IP addresses each. I'm assuming you're not using publically routable IP addresses. So, just use a different private address (10/8, 172.16/16, or 192.168.0/24) range, bind a secondary address to your gateway, and add in DHCP. IF you're using vlans, even easier. ~ Theo -- The Mailing List for the Devon & Cornwall LUG http://mailman.dclug.org.uk/listinfo/list FAQ: http://www.dcglug.org.uk/linux_adm/list-faq.html