Subject: Re: IEEE 1394 isochronous transmission code will be removed.
To: Ming Lei <firstname.lastname@example.org>
From: Daniel Carosone <email@example.com>
Date: 06/14/2003 15:21:16
On Tue, May 13, 2003 at 01:03:51PM -0700, Ming Lei wrote:
> By the way, I dont quite understand the use for IP over 1394 and who is the
> target user. Any one knows?
Apart from the "just because we can" aspect of building a full
protocol stack, and targetting 1394 as a universal interface, there
are a couple of specific uses I can see.
- cheap speed. Now gig-ethernet is commodity hardware, but back
when 1394 was emerging, it wasn't. Putting together a fast backbone
for a cluster (or whatever) using 400mbps firewire was attactive
- must faster than 100m ether, much cheaper than gig-e (and still
is if you consider the need for switches, perhaps).
- device management. In the SAN market, it's not uncommon for (eg)
smart fc-al raid controllers to be managed from a GUI over IP,
and for the IP to be either via its ethernet port or over fc-ip;
the GUI is agnostic, and written using standard tools that
gui-writers are familiar with. I can see reasonable motivation
for (eg) a videocam vendor to do similar (perhaps a web-based