Intermittent connectivity loss with em(4)

[Doug Hardie]

Forgot to include, I use a lot of bge devices and some rl.  However, I just discovered one of the remote client's computers has 2 em nics.  I am running the ping test now on it.  I did find the following in messages:

 zgrep em /var/log/messages*
/var/log/messages.6.gz:Sep 29 15:22:33 brain kernel: em0: link state changed to DOWN
/var/log/messages.6.gz:Sep 29 17:08:14 brain kernel: em0: link state changed to UP
/var/log/messages.6.gz:Sep 29 17:09:46 brain kernel: em0: link state changed to DOWN
/var/log/messages.6.gz:Sep 29 17:09:49 brain kernel: em0: link state changed to UP

The first outage was a complete outage to that site.  I don't know what caused it or how it got resolved.  I never noticed the second one.

The client has not been really thrilled with this machine.  He had a much better one, but it was too noisy and replaced it.

Yet another idea:  get mtr "my trace route".  package mtr-nox11 and use it to go to google.  It is traceroute and ping combined.  You can use -i 60 with it also.

-- Doug

> On 6 October 2019, at 14:10, Morgan Wesström <freebsd-database at pp.dyndns.biz> wrote:
> 
>> I have had issues with em nics in the past and don't use them anymore.  However, none of the issues were as blatant as you are seeing.  The dmsg log is only written to during boot.  Messages during operation are written to /var/log/messages.  Check there to see if there is anything that correlates with the outages.
> 
> Yes, I did check /var/log/messages too but there's nothing written there during the outages unfortunately.
> 
> /Morgan
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