Testing firewire
George Fazio
gfazio at n3gqf.us
Mon Nov 13 18:54:41 UTC 2006
On Sun, 12 Nov 2006, David Kelly wrote:
>
> On Nov 12, 2006, at 5:03 PM, Erik Norgaard wrote:
>
>> So I thought: Is this like ethernet that I need a crossed cable or can I
>> connect the two with an ordinary cable and check that it works?
>
> There is no master nor slave in Firewire, all are peers, and all have
> (essentially) the same socket. If the cable fits, it works. Witness the
> difference between a hardware standard driven by Apple (Firewire) and one
> from Intel/Microsoft (USB).
>
> Apple computers can be booted in "target mode" where the machine becomes
> nothing more than a Firewire hard drive. Only works for the primary drive,
> but works well. Apple recommends this mode (and Migration Assistant) for
> cloning user data and applications from one Mac to another.
>
> You might also try fwe(4) if your other OS's are capable of doing IP over
> firewire.
>
fwe(4) emulates an ethernet interface and is a non-standard method of
making Firewire become a network interface. If would work with other
BSDs? or Mac OS/X? possibly.
fwip(4) is what Windows and a lot of other operating systems use to
accomplish this feat. Last I check, it was no in the generic kernel and
had to be compiled in, specified in the loader.conf(5), or loaded with
kldload(8).
#device fwe # Ethernet over FireWire (non-standard!)
#device fwip # IP over FireWire
I had the fwip driver working with a Windows XP box for a little while. It
worked fairly well, but I don't think it was really any faster than
ethernet (at least for what I was doign with it).
Hope this helps.
George Fazio N3GQF
mailto:gfazio at n3gqf.us
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