RE: Clock Tolerance and WAN PHY
Hello There,
I understand that the "ELETE problem" was not
resolved: Even if you match WAN PHY clocks and SONET
clocks you still need the ELETE. If So: What is the
benefit?
And:
Since the ELTE can work with LAN PHY, does the
existence of this standard justified?
Thanks,
James
--- "Booth, Bradley" <bradley.booth@xxxxxxxxx> wrote:
>
> question everything about it. If we can't justify
> it being in the standard,
> then it probably doesn't belong.
>
> Cheers,
> Brad
>
> -----Original Message-----
> From: Roy Bynum [mailto:rabynum@xxxxxxxxxxxxxx]
> Sent: Saturday, January 27, 2001 4:03 PM
> To: Booth, Bradley; HSSG
> Subject: RE: Clock Tolerance and WAN PHY
>
>
> Brad,
>
> Just because the objective was vague doe not mean it
> was without
> meaning. By your reasoning, I could just as easily
> state that RL/LF
> functionality is out of scope, as it was not
> included in the
> objectives. Just as the objective for a LAN PHY
> carried with it the
> inferred lack of need for management overhead, the
> objective for the WAN
> PHY carried with it the inferred need for management
> overhead. Please
> refer back to the all of the traffic on the
> reflector and to the
> presentations concerning the management overhead
> requirements for a WAN PHY.
>
> Thank you,
> Roy Bynum
>
>
> At 09:53 PM 1/26/01 -0800, Booth, Bradley wrote:
>
> >To quote the objectives:
> >"Define two families of PHYs
> >- A LAN PHY, operating at a data rate of 10.000
> Gb/s
> >- A WAN PHY, operating at a data rate compatible
> with the payload rate of
> >OC-192c/SDH VC-4-64c"
> >
> >That's all the objective says. By that objective,
> we could create a "WAN
> >PHY" that that is just the 10GBASE-R PHY pushing
> data onto the fiber at
> >9.58464 Gb/s, without any SONET overhead. The
> objective was meant to be
> >vague so that the task force had some flexibility.
> >
> >Cheers,
> >Brad
> >
> >-----Original Message-----
> >From: Roy Bynum [mailto:rabynum@xxxxxxxxxxxxxx]
> >Sent: Friday, January 26, 2001 5:59 AM
> >To: rtaborek@xxxxxxxxxxxxx; HSSG
> >Subject: Re: Clock Tolerance and WAN PHY
> >
> >
> >
> >Rich,
> >
> >You have a very good a presenting that would seem
> reasonable to those who
> >don't have any experience in attempting to
> implement what you are
> >proposing. The objectives of P802ae include a WAN
> PHY. What constitutes a
> >WAN PHY has been explained to the group by those of
> us that have worked in
> >a WAN optical environment. You keep miss
> representing the requirements of
> >a WAN PHY by presenting a LAN implementation as a
> WAN. It works very well
> >at confusing those that are attempting to gain an
> understanding of what the
> >issues are.
> >
> >Those of us that have worked in the WAN optical
> environment are not
> >confused by your comments. Those of us that have
> worked in the WAN optical
> >environment would like to have the opportunity to
> educate those that would
> >actually like to gain a understanding of what the
> real world requirements
> >are.
> >
> >Thank you,
> >Roy Bynum
>
>
__________________________________________________
Get personalized email addresses from Yahoo! Mail - only $35
a year! http://personal.mail.yahoo.com/