Packet Loss w/bge & BCM5703 on Dell PE2650
koitsu at FreeBSD.org
Wed May 30 19:03:40 UTC 2007
On Wed, May 30, 2007 at 02:49:42PM -0400, Vinny Abello wrote:
> All suggestions welcomed:
Your mbuf counts look OK. I don't see anything there which looks
like a problem. If you had packet loss caused by mbuf exhaustion,
your FreeBSD console log would show something.
I've some couple questions:
1) Checked console logs (dmesg -a) to see if there's anything there
which might give you hints to the problem?
2) Any IPMI modules installed in that Dell box?
3) vmstat -i output?
4) Is there a switch between the Cisco router and the FreeBSD box?
5) If there is a switch between the router and the FreeBSD box, have
you tried the pings from a box (not the Cisco) on the same switch
segment as the FreeBSD box?
6) Have you tried pings the other way (FreeBSD box -> box#2, and
box#2 -> FreeBSD box) to see if its reproducable that way?
7) Does it only happen with ICMP traffic, or can you reproduce the loss
using something like FTP (slow transfer rates/stalls)?
8) Tried downthrottling to 100mbit (ifconfig_bge0="... media 100baseTX")
on both sides, to see if it's a gigabit-specific problem?
9) Tried different cabling? I see the network is gigabit. You might
try replacing the cables, preferably with CAT6.
| Jeremy Chadwick jdc at parodius.com |
| Parodius Networking http://www.parodius.com/ |
| UNIX Systems Administrator Mountain View, CA, USA |
| Making life hard for others since 1977. PGP: 4BD6C0CB |
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