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Re: [HSSG] Reach Objectives

The real decision regarding the use of a 10km vs. 2km PHY in our network is cost.  It seems that dividing the market would not serve to keep the cost of either PHY down.  I would really like to see us minimize the number of PHYs.


Brad Booth wrote:
The 10km vs. 2km debate occurred in 802.3ae.  It was determined that the solution for 2km was virtually the same as that for 10km; therefore, the task force felt it would be better to select only one of those reaches and 10km was it.  If there is a desire for 2km and 10km reaches in HSSG, then in my humble opinion, those wishing to support will need to bring justification forward as to why the study group should consider possibly increasing the number of PHYs.

From: Frank Chang [mailto:ychang@xxxxxxxxxxx]
Sent: Tuesday, August 22, 2006 9:19 AM
To: STDS-802-3-HSSG@xxxxxxxxxxxxxxxxx
Subject: Re: [HSSG] Reach Objectives

I agree datacenter for up to 100m. How about 10GigE LR disctance (10km) or campus 2km discussed earlier?
-----Original Message-----
From: Petar Pepeljugoski [mailto:petarp@xxxxxxxxxx]
Sent: Tuesday, August 22, 2006 6:02 AM
To: STDS-802-3-HSSG@xxxxxxxxxxxxxxxxx
Subject: Re: [HSSG] Reach Objectives


I believe that the Data Center distances should be 100m and 300m.

Petar Pepeljugoski
IBM Research
P.O.Box 218 (mail)
1101 Kitchawan Road, Rte. 134 (shipping)
Yorktown Heights, NY 10598

e-mail: petarp@xxxxxxxxxx
phone: (914)-945-3761
fax:        (914)-945-4134

John DAmbrosia <jdambrosia@xxxxxxxxxxxxxxxxxxx>

08/22/2006 12:37 AM
Please respond to
John DAmbrosia <jdambrosia@xxxxxxxxxxxxxxxxxxx>


[HSSG] Reach Objectives

We have had some conversation on the reflector regarding reach objectives.  Summarizing what has been discussed on the reflector I see the following –
Reach Objectives
Long-Haul   --> 100+ km
Metro       --> 10+ km
Data Center --> 50m & 300m
Data Center Reach Segregation
Horizontal runs
Vertical risers
Use this data to identify a single low-cost solution that would address a couple of the reach objectives
Other Areas
During the course of the CFI there were individuals who wanted Backplane Applications kept in for consideration, but I have not heard any further input in this area.  Are there still individuals who wish to propose Backplane as an objective?

Michael J. Bennett
Sr. Network Engineer
LBLnet Services Group
Lawrence Berkeley Laboratory
Tel. 510.486.7913