On Wed, 2002-02-06 at 10:06, Steve Grobe wrote:
> Running full duplex on a half duplex network will typically cause boatloads
> of collisions.

Most drivers are smart enough to Auto-Negotiate that at least to the
point of being able to set to 10B on a poor 10/100 switch.

> 
> I was thinking the same thing Nate was until I saw a collision count of
> zero.
> I am guessing cable, hub/switch port or NIC, just like everyone else.
> 
> -----Original Message-----
> From: Nate Carlson [mailto:natecars at real-time.com]
> 
> On 6 Feb 2002, Perry Hoekstra wrote:
> > One of my boxes on the network is having extreme difficulty in
> > communicating with the rest of the network.  If I do an ifconfig, I
> > see upwards of half of the packets dropped:
> >
> >
> > eth0      Link encap:Ethernet  HWaddr 00:02:E3:05:92:46
> >           inet addr:10.0.0.1  Bcast:10.0.0.255  Mask:255.255.255.0
> >           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
> >           RX packets:1744 errors:967 dropped:0 overruns:0 frame:2462
> >           TX packets:12380 errors:32 dropped:0 overruns:0 carrier:64
> >           collisions:0 txqueuelen:100
> >           RX bytes:288515 (281.7 Kb)  TX bytes:16860881 (16.0 Mb)
> >           Interrupt:10 Base address:0x8000
> >
> > Now the network is just four boxes, no DNS, just host files and static
> > IP addresses for three plus one laptop that uses DHCP (which isn't the
> > box that is having problems).  My question is: how do I determine if I
> > have a bad network card/driver versus a bad network configuration.  I
> > started digging around with some of the network tools to try to
> > diagnose the problem but nothing popped up.  However, I am
> > network-challenged in this area and something could be staring me in
> > the face and I wouldn't know it.
> 
> Is your network card running in full duplex on a half duplex network?
> 
> When you see 1/2 of the packets dropped, that's the problem a lot of the
> times..
> 
> -- 
> Nate Carlson <natecars at real-time.com>   | Phone : (952)943-8700
> http://www.real-time.com                | Fax   : (952)943-8500
> 
> 
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-- 
Ben Lutgens		http://people.sistina.com/~blutgens/	
Sistina Software Inc.

pub  1024D/9A0DDC59 2001-12-12 Ben Lutgens <blutgens at sistina.com>
     Key fingerprint = 8FCD A1EE CEA7 DEE1 9361  F32C 0A90 30D1 9A0D
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