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From: Chuck Swiger <cswiger@mac.com>
Date: Wed, 17 Oct 2007 16:09:14 -0700
To: David Yeske <dyeske@gmail.com>
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Cc: FreeBSD Stable List <freebsd-stable@freebsd.org>
Subject: Re: interface speed support
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Hi, David--

On Oct 17, 2007, at 4:03 PM, David Yeske wrote:
> Is there a way to determine the supported interface speed of a
> particular driver?  If I have a gigabit ethernet device connected to a
> 100baseTX switch, how can I determine the interface supports gigabit
> ethernet?  I have tried parsing the following.  Is there a cleaner way
> to do this?

Perhaps you want the "ifconfig -m _interface_" command, as in:

# ifconfig -m bge0
bge0: flags=8802<BROADCAST,SIMPLEX,MULTICAST> mtu 1500
         options=1a<TXCSUM,VLAN_MTU,VLAN_HWTAGGING>
         capability list:
                 =1a<TXCSUM,VLAN_MTU,VLAN_HWTAGGING>
         ether 00:b0:d0:e1:92:a1
         media: Ethernet autoselect (none)
         status: no carrier
         supported media:
                 media autoselect
                 media 1000baseTX mediaopt full-duplex
                 media 1000baseTX
                 media 100baseTX mediaopt full-duplex
                 media 100baseTX
                 media 10baseT/UTP mediaopt full-duplex
                 media 10baseT/UTP
                 media none

-- 
-Chuck