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RE: [EFM] [EFM-OAM] OAM Transport Proposal


I am sorry I am responding so late. I assume from the exchange of e-mails up
to this date 
that my oppinions will be in minority. 

What I do not see in this proposal is the compromise. 
The main idea of the Suzuki preamble proposal was the support for non-MAC
optical ethernet termination units - sometimes called converters. These
are the most inexpensive form of deploying Ethernet based FTTH or Optical
The intention of the preamble proposal was to support the link management
for these
type of units. These are widely deployed worldwide, and especially in Japan.
And also 
this type of basic optical ethernet termination makes sense as a starting

As I see in slide 5, in order to determine the capabilities of each end unit
a frame 
exchange needs to take place. If the CPE side is a converter, that normally
does not 
have frame/MAC support, than there is no link management. 

I assume that this is what the customers - the service providers - had in

This is the essence of the proposal. The rest can be agreed through enough
work and 
intelligence. But, by eliminating the basic idea of the Suzuki preamble
we also eliminated the basic link management capabilities of a simple non
MAC type
Optical Ethernet Termination... To correct this, we can add a simple
auto-sense capability 
based on preamble information transmission that will affect the link only
when the 
link goes from down to up. 

Too bad that this is not on the agenda...

Sergiu Rotenstein

>>-----Original Message-----
>>From: Kevin Daines [mailto:Kevin.Daines@xxxxxxxxxxxxxxxxxxxx]
>>Sent: Friday, April 19, 2002 2:01 PM
>>Subject: [EFM] [EFM-OAM] OAM Transport Proposal 
>>A number of individuals have worked since the St. Louis 
>>Meeting in March on a compromise OAM Transport proposal. We 
>>are posting the proposal for review/comment from the larger 
>>802.3ah Task Force.
>>Kevin Daines

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