SUMMARY: network transmission errors

Thank you to:
Greg Ulyatt
Thomas Knox
Jay Lessert
Derrick Daugherty
Darren Dunham

In general one common thing in their answer was to check whether
both end of connection are set to full (or both to half) duplex.
This is the answer. I had to change value of hme:hme_adv_100hdx_cap
and it solved my problem (of course I put the settings into /etc/system
then).

Below is original question.

przemol

----- Forwarded message from przemolicc@poczta.fm -----

> From: przemolicc@poczta.fm
> To: sunmanagers@sunmanagers.org
> Subject: network transmission errors
> Date: Wed, 6 Jun 2001 09:08:04 +0200
> 
> I was recently playing with SE Toolkit and found out that there are
> many transmission errors in our E 450 server (it is running 3 oracle's
> instances). Examples:
> # uptime
>   8:54am  up 73 day(s), 11:41,  4 users,  load average: 0.62, 0.85, 0.78
> # uname -a
> SunOS foxtrot 5.7 Generic_106541-08 sun4u sparc SUNW,Ultra-4
> # ../bin/se netstat.se
> Current tcp RtoMin is 200, interval 5, start Wed Jun  6 08:55:01 2001
> 
> Name  Ipkt/s Opkt/s  Err/s  Coll% NoCP/s Defr/s  tcpIn  tcpOut Conn/s %Retran
> hme0   215.6  215.0   0.40   0.00   0.00   0.00  11258   15040   0.00    0.07
> hme0    18.4   17.6   0.20   0.00   0.00   0.00   1590    1291   0.00    0.00
> hme0   272.0  274.6   0.40   0.00   0.00   0.00   6709   15624   0.00    0.08
> hme0   282.0  283.0   0.00   0.00   0.00   0.00   7253   16556   0.00    0.00
> hme0   442.8  442.4   0.40   0.00   0.00   0.00  10754   25828   0.00    0.04
> hme0   173.4  174.0   0.40   0.00   0.00   0.00   5669    9326   0.00    0.02
> hme0    53.4   53.0   0.40   0.00   0.00   0.00   1382    3002   0.00    0.00
> hme0   533.2  533.4   0.20   0.00   0.00   0.00  12044   30144   0.00    0.00
> hme0   315.0  316.0   0.20   0.00   0.00   0.00   7943   18864   0.00    0.00
> hme0   304.2  304.6   1.00   0.00   0.00   0.00   8180   17121   0.00    0.11
> hme0    35.4   36.2   0.00   0.00   0.00   0.00   1104    1913   0.00    0.52
> hme0   298.8  299.6   0.20   0.00   0.00   0.00   7155   17675   0.00    0.06
> hme0   118.2  117.6   0.20   0.00   0.00   0.00   3839    7285   0.20    0.00
> hme0   110.0  110.6   0.00   0.00   0.00   0.00   3281    6545   0.20    0.00
> 
> [columns: Err/s and %Retran]
> 
> # netstat -i
> Name  Mtu  Net/Dest      Address        Ipkts  Ierrs Opkts  Oerrs Collis Queue
> lo0   8232 loopback      localhost      59762  0     59762  0     0      0
> hme0  1500 foxtrot       foxtrot        79749157 232502 75623906 0     0      0
> 
> # ../bin/se netstatx.se
> Current tcp minimum retransmit timeout is 200  Wed Jun  6 09:04:54 2001
> 
> Name  Ipkt/s Ierr/s Opkt/s Oerr/s Coll/s  Coll%  tcpIn  tcpOut DupAck %Retran
> hme0    42.0    0.2   40.2    0.0    0.0   0.00   1942    2900      0    0.52
> 
> Name  Ipkt/s Ierr/s Opkt/s Oerr/s Coll/s  Coll%  tcpIn  tcpOut DupAck %Retran
> hme0    31.0    0.0   30.2    0.0    0.0   0.00   1802    2361      0    0.00
> 
> Name  Ipkt/s Ierr/s Opkt/s Oerr/s Coll/s  Coll%  tcpIn  tcpOut DupAck %Retran
> hme0   154.2    0.0  159.8    0.0    0.0   0.00   5354    9232      0    0.00
> 
> Name  Ipkt/s Ierr/s Opkt/s Oerr/s Coll/s  Coll%  tcpIn  tcpOut DupAck %Retran
> hme0   113.4    0.0  116.8    0.0    0.0   0.00   9346    6581      0    0.00
> 
> Name  Ipkt/s Ierr/s Opkt/s Oerr/s Coll/s  Coll%  tcpIn  tcpOut DupAck %Retran
> hme0    56.0    0.2   59.0    0.0    0.0   0.00   3916    3179      0    0.00
> 
> Name  Ipkt/s Ierr/s Opkt/s Oerr/s Coll/s  Coll%  tcpIn  tcpOut DupAck %Retran
> hme0    38.0    0.2   40.6    0.0    0.0   0.00   3187    1806      0    0.00
> 
> Name  Ipkt/s Ierr/s Opkt/s Oerr/s Coll/s  Coll%  tcpIn  tcpOut DupAck %Retran
> hme0    76.4    0.6   79.0    0.0    0.0   0.00   5945    4243      0    0.35
> 
> Name  Ipkt/s Ierr/s Opkt/s Oerr/s Coll/s  Coll%  tcpIn  tcpOut DupAck %Retran
> hme0    60.6    0.2   60.2    0.0    0.0   0.00   4746    3351      0    0.06
> 
> How I can find out what is making errors ?
> Should I worry or it is standard "level" of errors ?
> 
> przemol
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----- End forwarded message -----