Network card problems - setting duplex etc.

Thursday, 29 April 2004

Hi All,

I've got ADSL with Demon, and have a 4 port router (supplied by BT, I have no 
access to it) that I use for my net connection (I think it's just a hub).

However, I've just reasiled I'm only getting about 40k between boxes plugged 
into it. Connections to the internet are fine (as I'd expect for a 2Mb ADSL), 
it's just transfering files between machines.

I'm trying to work out if it's my setup that's the problem - or the BT router

thing.

lspci gives: 
00:0d.0 Ethernet controller: 3Com Corporation 3c905B 100BaseTX [Cyclone] (rev 
30)

lsmod gives:
3c59x                  29872   1 

mii-tool eth0 gives:
eth0: 10 Mbit, half duplex, no link

ethtool eth0 gives:
Settings for eth0:
No data available

mii-diag eth0 gives:
Basic registers of MII PHY #0:  0000 0000 0000 0000 0000 0000 0000 0000.
 Basic mode control register 0x0000: Auto-negotiation disabled, with
 Speed fixed at 10 mbps, half-duplex.
 Basic mode status register 0x0000 ... 0000.
   Link status: not established.
 Link partner information is not exchanged when in fixed speed mode.
   End of basic transceiver information.

uname gives:
Linux 2.4.22-1.2179.nptl #1 Tue Apr 13 10:14:30 EDT 2004 i686 athlon i386 

I've tried to nail the card at 10Mb HD, because autonegotiation wasn't working 
(so I switched it off), I thought it would cure my problem - but it hasn't. 
The fact that I can't get any details from ethtool worries me a little.

My 2nd machine on the network is my Laptop that I take too and from work - I 
know the network card in that machine is fine because autonegotiation works 
when I'm in the office.

mii-tool eth0 gives:
eth0: autonegotiation failed, link ok

mii-diag eth0 gives:

Basic registers of MII PHY #32:  1000 782d 0000 0000 01e1 0000 0000 
0000.
 Basic mode control register 0x1000: Auto-negotiation enabled.
 You have link beat, and everything is working OK.
 Your link partner does not do autonegotiation, and this transceiver 
type
  does not report the sensed link speed.
   End of basic transceiver information.

ethtool eth0 gives:
Settings for eth0:
        Supported ports: [ TP MII ]
        Supported link modes:   10baseT/Half 10baseT/Full 
                                100baseT/Half 100baseT/Full 
        Supports auto-negotiation: Yes
        Advertised link modes:  10baseT/Half 10baseT/Full 
                                100baseT/Half 100baseT/Full 
        Advertised auto-negotiation: Yes
        Speed: 10Mb/s
        Duplex: Half
        Port: MII
        PHYAD: 32
        Transceiver: internal
        Auto-negotiation: on
        Supports Wake-on: pumbg
        Wake-on: d
        Current message level: 0xffffffff (-1)
        Link detected: yes

Any ideas? Any more information I can provide? Anything in the logs I could 
look for?

I'm thinking it's either the setup of my main machine - or something on the 
router (which means I can shout at BT :)

Thanks in advance.
-- 
Jim Radford
   "If at first you don't succeed - change the DC"