Vincent, you write:
<<Steve, your earlier comments about not being able to deliver QoS over Gigabit
Ethernet are not exactly accurate.
Check out Extreme Networks. They are still private, but are delivering QoS over Gig
Ethernet today.>>
My understanding is that Fibre Channel's quality of service is
perfect. It can send data, video, and audio with guaranteed SYNCHRONOUS
delivery. Gigibit Ethernet uses something called RSVP which is an
improvement but far from the kind of quality of service provided
by Fibre Channel. Also, there are problems with RSVP. There are
no RSVP standards yet so it is still a proprietary technology.
Also, I have read that the RSVP standards discussions are not going
very well. In addition, RSVP, which involves reserving bandwidth
for transmissions requiring QOS, results in an overall decline
in throughput for the network. So in my opinion if you need true
quality of service in the LAN, Fibre Channel is the way to go.
Regards,
Steve
|
