At 12:52 PM 4/8/2010, Jack Vogel wrote:
Mike, I noticed this connection is only 100Mb, that isn't
accidental? And, is it possible for
you to check a connection at 1Gb and see if the watchdogs don't happen.
My test engineer is running this code, and we are having trouble
repro'ing the issue, so any
clues might help. Is the kernel 64 or 32 bit?
It is a 32 bit kernel (see the attached dmesg from the first email)
in a cisco 10/100 switch. I just tried and the dhclient issue happens
at gig speeds as well.
Apr 8 13:34:29 ich10 dhclient[1480]: DHCPREQUEST on em0 to
255.255.255.255 port 67
Apr 8 13:34:35 ich10 dhclient[1480]: DHCPREQUEST on em0 to
255.255.255.255 port 67
Apr 8 13:34:48 ich10 dhclient[1480]: DHCPDISCOVER on em0 to
255.255.255.255 port 67 interval 5
Apr 8 13:34:48 ich10 dhclient[1480]: ip length 328 disagrees with
bytes received 332.
Apr 8 13:34:48 ich10 dhclient[1480]: accepting packet with data
after udp payload.
0(ich10)# ifconfig em0
em0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
options=399b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,TSO4,WOL_UCAST,WOL_MCAST,WOL_MAGIC>
ether 00:1c:c0:95:0d:0d
inet 192.168.xx.219 netmask 0xffffff00 broadcast 192.168.xx.255
media: Ethernet autoselect (1000baseT <full-duplex>)
status: active
0(ich10)#
... As for the watchdog issue, it just seems to show up. I am not
able to reproduce it on demand. However, the dhclient issue happens
all the time. I will give it a whirl on a gigabit for a day and see.
Its not that frequent
Apr 7 02:19:05 ich10 kernel: em0: Watchdog timeout -- resetting
Apr 7 03:46:51 ich10 kernel: em0: Watchdog timeout -- resetting
Apr 7 08:04:03 ich10 kernel: em0: Watchdog timeout -- resetting
Apr 7 10:39:40 ich10 kernel: em0: Watchdog timeout -- resetting
Apr 7 11:12:34 ich10 kernel: em0: Watchdog timeout -- resetting
Apr 7 13:25:26 ich10 kernel: em0: Watchdog timeout -- resetting
Apr 7 14:01:36 ich10 kernel: em0: Watchdog timeout -- resetting
Apr 7 17:19:53 ich10 kernel: em0: Watchdog timeout -- resetting
Apr 7 21:16:45 ich10 kernel: em0: Watchdog timeout -- resetting
Apr 7 22:09:10 ich10 kernel: em0: Watchdog timeout -- resetting
But it should in theory show up at least once in 24hrs if its not a
port speed issue.
A potential 3rd issue I also noticed is that this morning I could not
login to the box-- but I could ping it, but no SSH banner. ie no 3way
handshake completing. I was able to 'fix' the issue by logging onto
the console, initiating some outbound tcp traffic (ie. ssh out from
the box) and then I could login again. Perhaps a TSO issue ? I now
have a firewire console hooked up so I can login out of band. If this
issue comes up again, how can I best narrow down what/where this 3rd issue is ?
---Mike
--------------------------------------------------------------------
Mike Tancsa, tel +1 519 651 3400
Sentex Communications, m...@sentex.net
Providing Internet since 1994 www.sentex.net
Cambridge, Ontario Canada www.sentex.net/mike
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