[ale] ethtool and mii-tool disagree

[Jeff Lightner]

Not the point.  I'm not asking which is right but rather why two tools
on the same server interrogating the same NIC wouldn't both give the
same answer.

-----Original Message-----
From: ale-bounces at ale.org [mailto:ale-bounces at ale.org] On Behalf Of
To: ale at ale.org
Christopher Fowler
Sent: Friday, December 08, 2006 4:05 PM
To: Atlanta Linux Enthusiasts
Subject: Re: [ale] ethtool and mii-tool disagree

What does the cisco switch say?

On Fri, 2006-12-08 at 15:36 -0500, Jeff Lightner wrote:
> Why would ethtool and mii-tool show different configs for the same
> NIC?  I've seen older NICs that ethtool wouldn't talk to but this is
> first time I've seen this.
> 
> That is why does mii-tool show it running 100 Full but ethtool show it
> running 100 Half?
> 
> We have a server with NIC reported by lspci as:
> 
> 0a:0b.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5705_2
> Gigabit Ethernet (rev 03)
> 
> When we check it with mii-tool we see:
> 
> mii-tool -v eth0
> 
> eth0: 100 Mbit, full duplex, link ok
> 
>   product info: vendor 00:08:18, model 26 rev 2
> 
>   basic mode:   100 Mbit, full duplex
> 
>   basic status: link ok
> 
>   capabilities: 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD
> 
>   advertising:  100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD flow-
> control
> 
> However when we check it with ethtool we see:
> 
> ethtool eth0
> 
> Settings for eth0:
> 
>         Supported ports: [ MII ]
> 
>         Supported link modes:   10baseT/Half 10baseT/Full
> 
>                                 100baseT/Half 100baseT/Full
> 
>                                 1000baseT/Half 1000baseT/Full
> 
>         Supports auto-negotiation: Yes
> 
>         Advertised link modes:  10baseT/Half 10baseT/Full
> 
>                                 100baseT/Half 100baseT/Full
> 
>                                 1000baseT/Half 1000baseT/Full
> 
>         Advertised auto-negotiation: Yes
> 
>         Speed: 100Mb/s
> 
>         Duplex: Half
> 
>         Port: Twisted Pair
> 
>         PHYAD: 1
> 
>         Transceiver: internal
> 
>         Auto-negotiation: on
> 
>         Supports Wake-on: g
> 
>         Wake-on: d
> 
>         Current message level: 0x000000ff (255)
> 
>         Link detected: yes
> 
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