G'morning :) These messages are generated when the topology of the bridged network changes, and are propagated to all switches in a subnet. They are harmless. Most switches generate 'topology changed' messages whenever someone plugs in a computer somewhere, so it's probably somebody in your building turning his/her computer on or off when this happens.
cheers, Lennert On Mon, Feb 18, 2002 at 03:34:25PM +0800, Ryan McConigley wrote: > > G'day :) > > I've had my firewall up for a few days now and suddenly today, every > 5-8minutes, I've been getting errors like the following in my logs --> > > Feb 18 15:32:01 moat kernel: br0: received tcn bpdu on port 2(eth1) > Feb 18 15:32:01 moat kernel: br0: topology change detected, sending tcn bpdu > > Everything seems to be working fine, I haven't noticed anything > stopping or out of the ordinary, but I'm curious to know what causes this > and if it should be something I should be alarmed about. Its the sort of > message I would expect if I was changing ports at the switch, but I'm not, > so I'm wondering where its coming from. > > Cheers, > Ryan. > > PS - Technical info, if it helps: > eth0 and eth1 are Intel Pro100 cards > OS is Linux 7.2 running kernel 2.4.17 with the latest bridge updates > -- > Ryan McConigley - Systems Administrator _.-, > Computer Science University of Western Australia .--' '-._ > Tel: (+61 8) 9380 7082 - Fax: (+61 8) 9380 1089 _/`- _ '. > Email: [EMAIL PROTECTED] - http://www.cs.uwa.edu.au/~ryan '----'._`.----. > \ > ` > \; > "You're just jealous because the voices are talking to me" > ;_\ > > > _______________________________________________ > Bridge mailing list > [EMAIL PROTECTED] > http://www.math.leidenuniv.nl/mailman/listinfo/bridge _______________________________________________ Bridge mailing list [EMAIL PROTECTED] http://www.math.leidenuniv.nl/mailman/listinfo/bridge
