Re: [HSSG] Topics for Consideration
Brad,
Your initial stab at distance criteria is a great start.
Long-Haul --> 100+ km
Metro --> 10+ km
Data Center --> 50m & 300m
If we can focus on gathering information to validate these distances, we
will be one step closer. The 10km and 300m distance targets have a fair
amount of history from 802.3ae. Do we have enough information from 10G
Ethernet port installations to validate these distances now?
For the long haul, we had many system providers pushing for 80km versus
40km at 10G. Is 100km the mark now?
In the data center room, it seems that 50m is long. Based on 10G
copper's success in addressing the short distance data center needs, it
seems that 25m might be a better target. Can the data center managers
comment on distribution of fiber run distances here.
Regards
Eric
Eric Grann
Omron Network Products
-----Original Message-----
From: Brad Booth [mailto:bbooth@xxxxxxxxxxxxx]
Sent: Tuesday, August 08, 2006 4:36 PM
To: STDS-802-3-HSSG@xxxxxxxxxxxxxxxxx
Subject: Re: [HSSG] Topics for Consideration
While it is useful to discuss the technologies that may be used, the
goal of the HSSG is to create a set of objectives, 5 critters and
PAR(s). For that, it is important to understand the market that is
looking at deploying higher speed Ethernet. From some of the
information shown to date, there appears to three markets: long-haul
wide area, metro, and data center. The long-haul wide area seems
interested in the 100+ km reach. Metro appears to be the 2-10 km reach.
Data center has a bit of a mix on reach requirements with something like
70% of the cabling runs in data centers being less than 50 m, but also
the need for longer runs possibly up to 300 m.
If the HSSG can agree on reaches that will satisfy the market demands,
without getting too worried about media and technology at this point in
time, then it will certainly help narrow the scope of work relative to
the objectives and 5 criteria. It can be difficult to leave the media
and technology discussion out. Heck, we're engineers and there's a
problem to be solved. Speaking from past experience though, it can make
the study group's job easier to tackle the bigger questions before they
have to get into the nitty gritty details.
Cheers,
Brad
-----Original Message-----
From: OJHA,JUGNU [mailto:jugnu.ojha@xxxxxxxxxxxxx]
Sent: Tuesday, August 08, 2006 3:53 PM
To: STDS-802-3-HSSG@xxxxxxxxxxxxxxxxx
Subject: Re: [HSSG] Topics for Consideration
Or, as some of us have been suggesting, we just use existing PMDs.
-----Original Message-----
From: Roger Merel [mailto:roger@xxxxxxxxxxx]
Sent: Tuesday, August 08, 2006 3:49 PM
To: STDS-802-3-HSSG@xxxxxxxxxxxxxxxxx
Subject: Re: [HSSG] Topics for Consideration
This pre-supposes that there will be PMD technology solutions at these
distance "break points" which account for substantially different
economics.
If a single PMD works for up to 5km with reasonable economics, there may
not be a need for 3 of the PMDs. We need presuppose how many until we
start to understand the technologies in contention, the distances they
support, and their relative economics.
Then we just need a 2nd PMD to cover 5-40km.
This seems quite reasonable and likely.
-----Original Message-----
From: Menachem Abraham [mailto:mabraham@xxxxxxxxxxxxxxxxxxxx]
Sent: Monday, August 07, 2006 5:00 PM
To: STDS-802-3-HSSG@xxxxxxxxxxxxxxxxx
Subject: Re: [HSSG] Topics for Consideration
Greg,
Based on your input it looks like we need to develop VSR, SR, LR, VLR
all at once so that we can address all of the "first wave" application
spaces shown in the CFI presentation.
If we had to prioritize our work in 802.3 what would be your view on the
relative importance of these?
Regards,
Menachem
Sent from my Blackberry
-----Original Message-----
From: "OJHA,JUGNU" <jugnu.ojha@xxxxxxxxxxxxx>
Date: Tue, 8 Aug 2006 13:46:45
To:STDS-802-3-HSSG@xxxxxxxxxxxxxxxxx
Subject: Re: [HSSG] Topics for Consideration
Greg,
Should campus backbone include LR and VLR? I could see it needing a few
kms, but beyond this, doesn't it really become a "Corporate Backbone"?
Jugnu
-----Original Message-----
From: Greg Hankins [mailto:ghankins@xxxxxxxxxxxxxxxxxxx]
Sent: Tuesday, August 08, 2006 1:38 PM
To: STDS-802-3-HSSG@xxxxxxxxxxxxxxxxx
Subject: Re: [HSSG] Topics for Consideration
Based on my experience with IX and ISP customers I see these reach
targets
in each application.
(1) Internet Exchange = VSR/SR, ISP Backbone = VSR/SR/LR/VLR , Content
Providers = VSR/SR/LR
(2) ISP Aggregation = VSR/SR/LR, Supercomputing / R&D = VSR/SR,
Broadband Aggregation = VSR/SR/LR
(3) Campus Backbone = SR/LR/VLR, Corporate Backbone = SR/LR/VLR,
Corporate Data Center = VSR/SR
Greg
--
Greg Hankins <ghankins@xxxxxxxxxxxxxxxxxxx>
Technical Marketing Engineer
Force10 Networks
+1 404 542 5530
-----Original Message-----
Subject: Re: [HSSG] Topics for Consideration
Date: Tue, 8 Aug 2006 07:38:19 -0700
From: "Menachem Abraham" <mabraham@xxxxxxxxxxxxxxxxxxxx>
To: <STDS-802-3-HSSG@xxxxxxxxxxxxxxxxx>
John,
In the CFI presentation there was a chart showing the expected market
adoption of a higher speed Ethernet over time.
First wave shown was: Internet Exchanges, ISP Backbones, Content
Providers
Second wave shown was: ISP Aggregation, Supercomputing / R&D, Broadband
Aggregation
Third wave shown was: Campus Backbone, Corporate Backbone, Corporate
Data Center
In the same presentation there were categories for reach targets:
Backplane up to 1m
VSR up to 25 m
SR up to 100 m
LR up to 40 Km
VLR beyond 40Km
Assuming that the market adoption projection above is correct we should
match the reach definitions to these applications and see what that
means regarding the priorities for our work, i.e. :
(1) Internet Exchange = SR, ISP Backbone = ? , Content Providers = SR
(2) ISP Aggregation = ?, Supercomputing / R&D = SR, Broadband
Aggregation = ?
(3) Campus Backbone = LR, Corporate Backbone = VLR, Corporate Data
Center = SR
What are the answers to the question marks above?
Regards,
Menachem
_____
From: John DAmbrosia [mailto:jdambrosia@xxxxxxxxxxxxxxxxxxx]
Sent: Wednesday, August 02, 2006 8:44 AM
To: STDS-802-3-HSSG@xxxxxxxxxxxxxxxxx
Subject: [HSSG] Topics for Consideration
All,
I would like to thank all those who have joined the reflector and will
be bringing information and requirements to the table in the future. I
am sure we are going to have a lot of "fun" in the future.
During our first meeting, I anticipate spending a lot of time focusing
on objectives. At the closing plenary I highlighted two issues /
objectives that the SG would have to consider:
* Tradition of 10x leap in speed
* Multiple Reach Targets
It was also presented that the focus of this effort wasn't for a desktop
application, and that the cost model needs to be considered.
I want to encourage everyone to start thinking about these areas and to
use the reflector for discussion. This will assist everyone in
providing well-thought out presentations, which will make for a better
and more productive meeting in September. :-)
John D'Ambrosia
Force10 Networks
Phone - 717-460-8535