Hi, 2009/3/1 stutiredboy <stutired...@gmail.com> > hi,all: > > recently , we found a problem that , some server which with FreeBSD > 6.2 may stop networking after > days of services, it is so difficulty express this status, e, such as > sleep? i can not ping this server, tracert is also > failure, and other services ,network/server seems to be down... but > while i insert the keyboard/mouse/crt in , > everything is ok, such as a ring to call the system to wake-up... no > errors found in dmesg or /var/log/messages, > such as nothing happened...orz，our unlimit args as follow: > > cputime unlimited > filesize unlimited > datasize 2088152 kbytes > stacksize 65536 kbytes > coredumpsize unlimited > memoryuse unlimited > vmemoryuse unlimited > descriptors 655000 > memorylocked unlimited > maxproc 5547 > sbsize unlimited > > plz give me some suggestion to trace the problem or solve it . thanks a > lot ! >
First you need to check whether packets are reaching the system and whether the response packets are leaving it with tcpdump(8) on the appropriate interface. If you see the packets coming but not coming out then you need to check the status of your TCP/IP stack -- e.g. post the output of "netstat -m" and "netstat -s". Also check dmesg output for any errors. If you are using firewall(s) (ipfw/ipfilter/pf) then check the rules and the firewall states status; try temporarily disabling the firewall (ipfw disable firewall / ipf -D / pfctl -d) and check whether your system becomes reachable. Check CPU load, interrupts, packet stats (systat -vmstat / systat -ifstat). Regards, Adrian Penisoara EnterpriseBSD _______________________________________________ freebsd-net@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "freebsd-net-unsubscr...@freebsd.org"
