Dmytro O. Redchuk <dor@xxxxxxx> wrote: >On Fri, Jun 03, 2005 at 11:24:13AM +0300, Radu CUGUT wrote: >> I have an ethernet LAN, made over dumb fast-ethernet switches >> (10/100mbit) without management, so there is no IP for the switches. >> >> What I want, if possible, is to find out if a switch is down or not. [...] >Plug two more cards into you linux box, connect them both to the switch, >make them an interfaces of one bridge inside you linux box and bring up >STP over there. I guess bridge should detect a loop quickly and block one >port. Then you'll be able to monitor bridge's state. I suspect that the bonding driver would also do what you're looking for. Docs can be found at: http://sourceforge.net/projects/bonding It can either monitor the link state, or issue ARP probes (as somebody else suggested) to check connectivity to a peer on the local network. Judging from my experience with managed switches, I suspect that the bonding driver (in active-backup mode, for example) would detect link failure faster than STP. -J --- -Jay Vosburgh, IBM Linux Technology Center, fubar@xxxxxxxxxx _______________________________________________ LARTC mailing list LARTC@xxxxxxxxxxxxxxx http://mailman.ds9a.nl/cgi-bin/mailman/listinfo/lartc
