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RE: [RPRWG] MAC Question




Going by experience in switches, latency is not a real issue.

Regards,

Devendra Tripathi
VidyaWeb, Inc
90 Great Oaks Blvd #206
San Jose, Ca 95119
Tel: (408)226-6800,
Direct: (408)363-2375
Fax: (408)226-6862

> -----Original Message-----
> From: owner-stds-802-17@xxxxxxxx [mailto:owner-stds-802-17@xxxxxxxx]On
> Behalf Of Ajay Sahai
> Sent: Thursday, March 22, 2001 6:34 AM
> To: Ray Zeisz
> Cc: stds-802-17@xxxxxxxx
> Subject: Re: [RPRWG] MAC Question
>
>
> Ray:
>
> I guess the answer is that the group is still debating this issue. Some
> vendors prefer to have a largish transit buffer where transit frames
> are stored. Others are proposing "cut through"  transit functionality.
>
> I personally feel that latency will be larger in the first approach.
>
> On another note I do not believe that the similarity with 802.5 is
> on the lines of claiming a token etc. etc. The MAC mechanism
> is going to be different.
>
> Hope this helps.
>
> Ajay Sahai
>
> Ray Zeisz wrote:
>
> > I am following the .17 group from afar, but I have a question:
> >
> > Is it acceptable for each node in the ring to buffer up an entire packet
> > before forwarding it to its neighbor?  Would the latency be to
> great if this
> > were done?  Or is the .17 direction more along the lines of
> 802.5 where only
> > a few bits in each ring node are buffered...just enough to
> detect a token
> > and set a bit to claim it.
> >
> > Ray
> >
> > Ray Zeisz
> > Technology Advisor
> > LVL7 Systems
> > http://www.LVL7.com
> > (919) 865-2735
>