RE: Proposed WAN vs. LAN Terms (Ethernet HSSG)
- To: stds-802-3-hssg@ieee.org
- Subject: RE: Proposed WAN vs. LAN Terms (Ethernet HSSG)
- From: "Gerhold, Mark" <Mark.Gerhold@unisys.com>
- Date: Mon, 10 May 1999 16:49:48 -0400
- Cc: bgregory@molex.com
- Sender: owner-stds-802-3-hssg@majordomo.ieee.org
How about something like
10KBase-..
or
10GBase-
This would have two advantages. It would reduce the number of characters in
the name and move to a scientific notation.
Mark
mark.gerhold@unisys.com
-----Original Message-----
From: bgregory@molex.com [mailto:bgregory@molex.com]
Sent: Monday, May 10, 1999 3:34 PM
To: BRIAN_LEMOFF@HP-PaloAlto-om16.om.hp.com
Cc: stds-802-3-hssg@ieee.org; xclairardin@molex.com; twhitlow@molex.com
Subject: Proposed WAN vs. LAN Terms (Ethernet HSSG)
Hi All,
Just a quick question, is there a "term" defined for the very long reach
version
of 10GEth? These definitions seem to be important to our discussion. As
Brian
from HP stated, we're not being clear on the specific application
environment.
I'd suggest something like:
10,000Base-SX
Multi-mode
Wavelength ~ 850nm
I'd guess WWDM only
300m reach over 62.5um fiber
10,000Base-LX
Single-mode (maybe also multi-mode)
Wavelength ~ 1310nm or 1550nm
WWDM, Serial or MAS
10km reach
10,000Base-EX (EX=Extended Length)
Single-mode
Wavelength ~ 1550nm
DWDM or Serial
Externally modulated
Long Reach
(similar to what Bill St. Arnaud is talking about)
Also, I've seen some comments on the serial version of the 10,000Base-LX
that
assume it'll be externally modulated. I've heard a number of individuals
state
that a directly modulated 10 Gb laser is possible. Lucent seemed to be
proposing this at the Austin meeting (I believe their eye pattern was from
one
of these devices). If this was a directly modulated uncooled DFB without
isolator, then I believe it would be by far the lowest cost and the most
straight forward. Regarding the 10,000Base-EX, I'd (obviously) assume that
this
was only externally modulated.
Regards,
Bryan Gregory
bgregory@molex.com
630/512-8520