Interpreting netstat output

[zep]

On 11/23/2017 10:10 AM, Ernie Luzar wrote:
>
> I keep seeing this in the periodic daily output.
> During the day I issue netstat -id command and I see the number of
> Oerrs  increase on the vge0 interface.
>
> Network interface status:
> Name    Mtu Network       Address Ipkts  Ierrs Idrop Opkts  Oerrs
> em0    1500 <Link#1>      xxxxxx  430877 0     0     767138  0
> em0       - 10.0.0.0/8    xxxxxx    5625 -     -       5745  -
> vge0   1500 <Link#2>      xxxxxx 2553560 0     0     434774  7
> vge0      - 25.85.45.0/20 xxxxxx    1368 -     -     1200    -
>
>
> What does this Out errors count really mean and what should I be doing
> about it?
> _______________________________________________
>
from the netstat manpage

BUGS
     The notion of errors is ill-defined.

FreeBSD 11.1-RELEASE-p1        December 1, 2015        FreeBSD
11.1-RELEASE-p1


I'd guess you could get an error from something as benign as a collision
or anything else that forces a retransmit  by my math this is on the
order of .001610031% of your traffic.  with that low of a total count
and percentage, I wouldn't think it makes much sense to chase down much
farther unless you have a specific issue you're trying to work through.

-- 
public gpg key id: 0x5B8147CB