On Wed, Apr 25, 2001 at 09:39:27AM +0200, Arthur van Leeuwen wrote: > Doei, Arthur. (The tricky part is the link-state monitoring... at the TCP/IP > level this is theoretically impossible...) Yes, indeed. There is no special protocol for this. That's why OSPF and his younger and older brothers have those HELO packets. That's why TCP has the optional keepalive segments (although, in case of TCP it's an end-to-end behaviour). If you know the IP of the next hop router and if that router has not been instructed to ignore ICMP requests, ping might help. If you don't know the IP, pinging to the subnet broadcast will also do. Ramin > > -- > /\ / | arthurvl@xxxxxxxxxx | Work like you don't need the money > /__\ / | A friend is someone with whom | Love like you have never been hurt > / \/__ | you can dare to be yourself | Dance like there's nobody watching > > > _______________________________________________ > LARTC mailing list / LARTC@xxxxxxxxxxxxxxx > http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://ds9a.nl/2.4Routing/