>>>>> "Mahmood" == Mahmood Naderan <nt_mahm...@yahoo.com> writes: Mahmood> I am using scientific linux 6.3 which kernel Mahmood> 2.6.32-279.5.1.el6.x86_64. The chassis, say 'A', has 3 Mahmood> network interfaces. Eth1 has valid IP and is connected to Mahmood> internet and eth2 has invalid IP and is connected to Mahmood> another local switch.
Mahmood> Problem is that the internet is randomly disconnected on Mahmood> eth1 so the computer is unreachable through ping Mahmood> command. At the same time, there is another chassis, say Mahmood> 'B', which has also the same configuration. I mean one Mahmood> interface of 'B' is connected to the internet (same Mahmood> internet witch as 'A') and one interface to local switch Mahmood> (same local switch as 'A'). However 'B' uses Ubuntu 12.04. .. Mahmood> The situation is very very random, so I tried to use Mahmood> "tcpdump -vvv -i eth1" to see if I can find any useful Mahmood> information about connect/disconnect messages. Mahmood> Can tcpdump help me with this problem? Any feedback is appreciated. I think not if you are not very experienced using it. I would suspect that you have a duplicate IP address on your internet side. -- ] Never tell me the odds! | ipv6 mesh networks [ ] Michael Richardson, Sandelman Software Works | network architect [ ] m...@sandelman.ca http://www.sandelman.ca/ | ruby on rails [ _______________________________________________ tcpdump-workers mailing list tcpdump-workers@lists.tcpdump.org https://lists.sandelman.ca/mailman/listinfo/tcpdump-workers