kernel: em0: Watchdog timeout -- resetting

[Aknot]

Dear forum,

Our logs are full of

kernel: em0: Watchdog timeout -- resetting

Having a hard time finding any definitive solutions to this.

Anyone here have any knowledge on this, please let me know.

Thanks,

uname -a

FreeBSD srv03 10.1-RELEASE FreeBSD 10.1-RELEASE #0 r274401: Tue Nov 11 21:02:49 UTC 2014  root@releng1.nyi.freebsd.org:/usr/obj/usr/src/sys/GENERIC  amd64

pciconf -lv

em0@pci0:2:0:0: class=0x020000 card=0x075015ad chip=0x100f8086 rev=0x01 hdr=0x00
vendor  = 'Intel Corporation'
device  = '82545EM Gigabit Ethernet Controller (Copper)'

ifconfig

media: Ethernet autoselect (1000baseT <full-duplex>)

 

[jbeez]

So the man page for em(4) does have a blurb about this message.

em%d: watchdog timeout -- resetting  The device has stopped responding to
     the network, or there is a problem with the network connection (cable).

I was going to suggest possibly experimenting with the polling option or TSO, this has helped me in the past.

HTH
-J

 

[fulano]

Or a problem with the router. I had this problem once, replacing the router was the solution.

 

[Aknot]

Thanks for your replies, I'll will look into the man for the em-driver.