RE: Why I think a variable date rate PHY is important for LAN or WAN
Bill,
I absolutely agree that we have to support the installed base. However, with
trunking/link aggregation being standardized, you can easily trunk 2 to 4
1Gig segments to achieve the performance between 1 Gig and 10 Gig.
Considering the develoment cost, equipment deployment costs, etc., it just
doesn't make sense to me to target less than 10 Gb/s.
Walt
> -----Original Message-----
> From: Bill St. Arnaud [mailto:Bill.St.Arnaud@canarie.ca]
> Sent: Thursday, September 16, 1999 9:54 AM
> To: Bruce_Tolley@3com.com
> Cc: 'HSSG'
> Subject: Why I think a variable date rate PHY is important for LAN or
> WAN
>
>
>
> I would like to echo Bruce Tolley's comment that the
> traditional LAN market
> is important as the WAN market.
>
> This is why I think we need a variable data rate PHY ( yes I
> know this may
> be real hard with PLL). But maybe we can user
> interchangable PHY devices
> like GBIC connectors.
>
> The problem is that just like in the WAN, there will be a
> huge installed
> base of existing fiber. A lot of this fiber may not support
> 10GbE at the
> targeted distances, but it may work very well at speeds of
> 2GbE, 4GbE,
> 8GbE, etc
>
> As lasers are the single biggest cost, partularly in the WAN,
> lower data
> rates will allow us to operate our networks at greater distances. As
> bandwidth demand grows users can have a smooth upgrade path by either
> increasing laser power, or installing boosters (1R) and or
> repeaters (3R) or
> ultimately installing new fiber
>
> Bill
>
> Bill St. Arnaud
> Senior Director Network Projects
> CANARIE
> bill.st.arnaud@canarie.ca
> +1 613 785-0426
>
> Bill St. Arnaud
> Senior Director Network Projects
> CANARIE
> bill.st.arnaud@canarie.ca
> +1 613 785-0426
>
> > -----Original Message-----
> > From: owner-stds-802-3-hssg@majordomo.ieee.org
> > [mailto:owner-stds-802-3-hssg@majordomo.ieee.org]On Behalf Of
> > Bruce_Tolley@3com.com
> > Sent: September 16, 1999 8:18 AM
> > To: Young, Leonard G
> > Cc: 'HSSG'
> > Subject: RE: York plans
> >
> >
> >
> >
> >
> > Leonard:
> >
> > We cannot roll out 10 GbE in 2 or 3 years to our customers and
> > tell them SORRY
> > there is no support for your installed fiber. We CANNOT tell
> > them just pull
> > enhanced multimode fiber.
> >
> > As it stands 100 meters is not sufficient as a goal for the
> > installed base. 10
> > GbE will be a backbone technology for campus LANs and must
> > support the installed
> > cabling. If we cannot run 10 GbE on installed MM fiber at
> > backbone distances,
> > we should start telling customers now to pull SM fiber.
> >
> > What we really need is a goal that gives us a real backbone
> > distance of 200
> > meters on the installed MM fiber.
> >
> > There has been a plethora of email about support for the WAN on
> > this reflector.
> > How about some email that communicates support for our
> > traditional customer
> > base??
> >
> > Bruce Tolley
> > Manager, Business Development
> > 3Com Corporation
> >
> >
>