/kernel: em0: Link is Down

[Stephen Bader]

Just to verify, I would assume you've checked the following?:

	- Bad Cable - May not have appeared until it got loaded
	- Auto Negotiate Issues (check duplex) - Very common
	- Force to 10mbps to see if it still happens
	- For to half duplex in both 10 & 100 mbps
	- Different physical port on the switch

I haven't seen any issues on this list with the em driver, but I may be
wrong. I don't have em cards, so other than the above, I can't offer much.

-Steve

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Stephen Bader                  JORSM Internet, Regional Internet Services
Systems Administrator          7 Area Codes in Chicagoland and NW Indiana
steveb at jorsm.com               100Mbps+ Connectivity, 56K-DS3, V.90, ISDN
(219) 322-2180                 Quality Service, Affordable Prices
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On Mon, 5 Jan 2004, Clint Gilders wrote:

> Hi
>
> I'm seeing a lot of the error messages below on a dual Xeon 2.5 Ghz running 4.9-STABLE
> built on Wed Nov 26 2003.  The errors started when I moved a fairly busy database to this
> server.
>
> Jan  4 17:56:50 king7 /kernel: em0: Link is up 100 Mbps Full Duplex
> Jan  4 19:04:18 king7 /kernel: em0: Link is Down
> Jan  4 19:04:20 king7 /kernel: em0: Link is up 100 Mbps Full Duplex
> Jan  4 23:59:06 king7 /kernel: em0: Link is Down
> Jan  4 23:59:08 king7 /kernel: em0: Link is up 100 Mbps Full Duplex
> Jan  5 01:04:48 king7 /kernel: em0: Link is Down
> Jan  5 01:04:50 king7 /kernel: em0: Link is up 100 Mbps Full Duplex
>
> I found menton of changing  '#define EM_REPORT_TX_EARLY 0' to '#define EM_REPORT_TX_EARLY
> 1' in /usr/src/sys/dev/em/if_em.h but my if_em.h doesn't have this line
>
> Anyone have any suggestions on how to remedy this?   Is this a known problem that would
> have been fixed since my system was compiled in November?
>
> Thanks
> --
> Clint Gilders <techservices at onlinehobbyist.com>
> Director of Technology Services
> OnlineHobbyist.com, Inc.
>
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