[vortex] 3c905C-TX : not working in 100Mbps / Full Duplex ?

[Malcolm Scott]

Have you tried checking the card's EEPROM configuration? It could be set
wrongly. It should be set to autonegotiate, but it may be set to force
certain settings. (I had a similar full-duplex problem myself, and it
turned out to be an EEPROM config problem.)

To fix that, you need to download the DOS utility (3c90xcfg.exe??) from
3COM (I think it's on the DOS driver disk for these cards), and put it on
a bootable DOS floppy.

Hope this helps,

Malcolm


On 09 Jan 2003 09:55:27 +0100, "Emmanuel Viennet"
<emmanuel.viennet@lipn.univ-paris13.fr> said:
> 
> Hi,
> 
> we use 3COM 3c905C-TX PCI adapters under
> linux 2.4.18 (RedHat 8.0 or 7.3), using
> 3c59x driver module.
> 
> It works fine in 10 Mbps half-duplex, but we could'nt set it to 100/Full
> Duplex.
> 
> The adapter is connected directly to a CISCO 2900 10/100 switch.
> 
> We can't get setup a correct connexion at 100/FD.
> 
> We tried the following:
>  - switch auto-negociating, card auto-negociating
> 
>  - switch forced to 100/FD, card forced 
>    (either with options 3c59x options=0x0200
>     or options 3c59x options=4 full_duplex=1
>     or even using   mii-tool -F 100baseTx-FD )
> 
> 
> In all cases, we get "carrier errors", as in this example:
> 
> eth1      Lien encap:Ethernet  HWaddr 00:04:75:C8:6B:B6  
>           inet adr:10.10.0.1  Bcast:10.10.255.255  Masque:255.255.0.0
>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>           RX packets:3421953 errors:0 dropped:0 overruns:1 frame:0
>           TX packets:2794227 errors:0 dropped:0 overruns:0
> carrier:2793937
>           collisions:0 lg file transmission:100 
>           RX bytes:980768562 (935.3 Mb)  TX bytes:2223140870 (2120.1 Mb)
>           Interruption:5 Adresse de base:0xe880 
> 
> 
> Connectivity is OK, but paquets are loosed, and NFS performance
> is very poor.
> 
> We tried this on several PC, several 3COM cards and several switches
> with the same results...
> The same setup works perfectly with Ethernet Pro 100 (eepro100) or
> older 3COM cards (905B).
> 
> 
> Any advice ? (we have a *lot* of 905C-TX and feel quite desesperated...)
> 
> Emmanuel
> 
> 
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> 

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