Date: Thu, 12 Nov 1998 21:54:06 -0600 (CST) From: Dave Bodenstab <imdave@mcs.net> To: questions@FreeBSD.ORG Subject: Are collisions normal on a local net Message-ID: <199811130354.VAA11666@base486.home.org>
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Dear Network Wizards,
I've got 3 PC's networked:
CPU OS Board Driver
---------- --------------------- -------------------------- -----
486 FreeBSD 2.0.5 ne2000 clone ed
586/mmx FreeBSD 2.2.5 ne2000 clone ed
2 x 686/pro FreeBSD 3.0 (8/4 snap) Intel Etherexpress Pro/100B fxp
(integrated on a PR440FX MB)
When I do a ``netstat -i'' on either of the machines with the ne2000
cards, I see no collisions, but I do see a few IERRS, ie:
Name Mtu Network Address Ipkts Ierrs Opkts Oerrs Coll
ed0 1500 <Link>00.40.05.52.8d.ad 8352016 15 5678032 0 0
ed0 1500 10 base486 8352016 15 5678032 0 0
However, from the 3.0 box, I see:
Name Mtu Network Address Ipkts Ierrs Opkts Oerrs Coll
fxp0 1500 <Link> 00.a0.c9.49.6f.9e 199825 0 363568 0 30635
fxp0 1500 10/24 base686 199825 0 363568 0 30635
This is after only about one day with the 3.0 machine on the network:
base486 up 14+00:30, 2 users, load 0.02, 0.11, 0.22
base586 up 14+00:21, 2 users, load 0.81, 0.73, 0.61
>>base686 up 1+05:25, 1 user, load 0.00, 0.00, 0.00 <<
If I rcp a big file between the two ne2000 boxes, the collision led on
the hub flashed occasionally, but if I do the same between one of the
ne2000 boxes and the intel etherexpress, the collision led is on
much more often.
Is this normal or do I have something wrong with my setup? Could it be
something with the fxp driver or hardware trying to go at 100M instead of
10M? I notice that the fxp driver can be ifconfig'ed with a media type
and options... I tried -media 10baseT/UTP but it didn't seem to affect
anything.
Dave Bodenstab
imdave@mcs.net
For completeness, I've attached the ifconfig's and dmesg from each system:
486 FreeBSD 2.0.5
--------------------
ed0: flags=8863<UP,BROADCAST,NOTRAILERS,RUNNING,SIMPLEX,MULTICAST> mtu 1500
inet 10.0.0.1 netmask 0xffffff00 broadcast 10.0.0.255
FreeBSD 2.0.5-950622-SNAP #0: Wed Dec 31 02:26:08 CST 1997
bin@base486.home.org:/usr/src/sys/compile/base486
CPU: i486 DX2 (486-class CPU)
Origin = "GenuineIntel" Id = 0x435 Stepping=5
Features=0x3<FPU,VME>
real memory = 33161216 (8096 pages)
avail memory = 30670848 (7488 pages)
Probing for devices on the ISA bus:
ed0 at 0x280-0x29f irq 10 on isa
ed0: address 00:40:05:52:8d:ad, type NE2000 (16 bit)
586 mmx FreeBSD 2.2.5
-----------------------
ed0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
inet 10.0.0.2 netmask 0xffffff00 broadcast 10.0.0.255
ether 00:40:05:4a:68:d6
Copyright (c) 1992-1997 FreeBSD Inc.
Copyright (c) 1982, 1986, 1989, 1991, 1993
The Regents of the University of California. All rights reserved.
FreeBSD 2.2.5-RELEASE #4: Sun Aug 30 14:27:15 CDT 1998
bin@base586.home.org:/usr/src/sys/compile/base586
CPU: Pentium (200.46-MHz 586-class CPU)
Origin = "GenuineIntel" Id = 0x544 Stepping=4
Features=0x8001bf<FPU,VME,DE,PSE,TSC,MSR,MCE,CX8>
real memory = 33554432 (32768K bytes)
avail memory = 30457856 (29744K bytes)
ed0 at 0x280-0x29f irq 11 on isa
ed0: address 00:40:05:4a:68:d6, type NE2000 (16 bit)
PR440FX 2 x 686/pro FreeBSD 3.0 8/4 snap
---------------------------------------------
fxp0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
inet 10.0.0.3 netmask 0xffffff00 broadcast 10.0.0.255
ether 00:a0:c9:49:6f:9e
media: autoselect
supported media: autoselect 100baseTX <full-duplex> 100baseTX 10baseT/UTP <full-duplex> 10baseT/UTP
Copyright (c) 1992-1998 FreeBSD Inc.
Copyright (c) 1982, 1986, 1989, 1991, 1993
The Regents of the University of California. All rights reserved.
FreeBSD 3.0-19980804-SNAP #0: Sun Aug 30 14:26:13 CDT 1998
bin@base686.home.org:/usr/src/sys/compile/smp
Timecounter "i8254" frequency 1193182 Hz cost 3640 ns
CPU: Pentium Pro (686-class CPU)
Origin = "GenuineIntel" Id = 0x619 Stepping=9
Features=0xfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV>
real memory = 67108864 (65536K bytes)
avail memory = 62803968 (61332K bytes)
FreeBSD/SMP: Multiprocessor motherboard
Probing for devices on PCI bus 0:
fxp0: <Intel EtherExpress Pro 10/100B Ethernet> rev 0x02 int a irq 18 on pci0.6.0
fxp0: Ethernet address 00:a0:c9:49:6f:9e
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