strange problem FreeBSD-8.1-Release

[Sami Halabi]

Hi,
I have a FBSD router base on version 8.1-RELEASE-p4.

I have 6 Nics,
bce1 - connected to the net
bce0 & em0  are bridged into bridge0 and connected to a switch & another
server
em1 - connected to a server
em2 & em3  are teammed (using lagg0 with LACP) and connected to an intra net

I'm monitoring traffic using MRTG on my side, on the of the other side of
the lagg0 interface using CACTI monitoring my ports.

Today at 13:00 approx i had a sudden fall down of the traffic on the graphs
on all ports.
the strange thing is that no connection was lost, but the traffic like went
down.

I'm running Quagga on this box with BGP between bce1, and lagg0, but the
quagga interface shows no lack of connectivity;
># show ip bgp summary
>BGP router identifier xx.yy.zz.ss, local AS number XXXYYY
>RIB entries 683010, using 63 MiB of memory
>Peers 3, using 18 KiB of memory
>Peer groups 3, using 96 bytes of memory
>
>Neighbor        V    AS MsgRcvd MsgSent   TblVer  InQ OutQ Up/Down
 State/PfxRcd
>ip1.1.1.1  4  1680  105169   44819        0    0    0 01w2d04h     2265
>ip2.2.2.2   4  5585  101800   89437        0    0    0 1d21h50m     1698
>ip3.3.3.3   4  1680 3870780   44813        0    0    0 01w4d11h   362157
>
>Total number of neighbors 3

on the logs i had these lines only:
Aug 17 12:59:45 bgpServer kernel: em2: Watchdog timeout -- resetting
Aug 17 12:59:45 bgpServer kernel: em2: link state changed to DOWN
Aug 17 12:59:48 bgpServer kernel: em2: link state changed to UP

anyone ever faced this problem? any ideas how i can track down what happened
there?

Thanks in advance,


-- 
Sami Halabi
Information Systems Engineer
NMS Projects Expert