Re: WAN PHY name
Roy,
Please bear with me while I try to assess the scope of IEEE P802.3ae with
respect to the following HSSG objective:
(Define) a WAN PHY, operating at a data rate compatible with the payload rate of
OC-192c/SDH VC-4-64c.
You have provided a definition for all four "PHYs" I listed in my original note.
Thank you for providing these descriptions.
Your response still leaves me a bit confused as to which terms are equivalent
and which are intended to satisfy the above HSSG objective?
Can you please clarify this?
Best Regards,
Rich
--
Roy Bynum wrote:
>
> Rich,
>
> The WAN compatible PHY being developed by IEEE is a specific implementation
> of 802.3 Ethernet for the purpose of transporting unmodified 802.3 Ethernet
> MAC frames over existing high bandwidth long haul communications
> infrastructure. It will also allow the WAN compatible PHY users to obtain
> service level agreements from the long haul service providers in relation to
> the reliability, maintenance, and support of the facilities being leased by
> the users.
>
> "Lite SONET/SDH" is a term that has been used for some time to refer to a
> reduced OAM&P functional overhead on the customer drop side of SONET/SDH
> transport systems. This was codified by T1X1 in the document T1X1.416-99.
> It not only applies to fully concatenated services like OC192C POS and
> 10GbE, but includes the multiplexed service overhead mappings. I received a
> copy of this document from the editor. I don't know if it is available on
> the public T1X1 FTP site.
>
> The T1X1.5/256r1-99 proposal was made after the Nortel WAN compatible PHY
> proposal was made to the HSSG. In some respects it can be said that T1X1.5
> is looking at the mapping technology that was introduced through IEEE 802.3,
> not the other way around.
>
> The "Ethernet over SONET/SDH" term can be blamed on me. I was attempting to
> get the 802.3 WG to recognize that other standards organizations were about
> the define transport standards for Ethernet without the support of the 802.3
> WG. This is very true of the "Ethernet over SDH" proposal before the ITU.
> It striped off the Ethernet Frame FCS, replaced it with a HDLC FCS, and then
> used byte stuffing to map the frame into SDH. I was able to attend ITU SG7
> (not as an IEEE liaison). I had to leave early, but I believe that I was
> successful in getting the proposal modified so that the 802.3 Ethernet MAC
> frame remained in tact. We will see when IEEE 802 gets the liaison letter
> from ITU SG7.
>
> I hope that this helps. Maybe we can share some brews at the next meeting?
>
> The best to you,
> Roy
>
> ----- Original Message -----
> From: Rich Taborek <rtaborek@xxxxxxxxxxxxx>
> To: HSSG <stds-802-3-hssg@xxxxxxxx>
> Sent: Friday, April 07, 2000 7:58 PM
> Subject: Re: WAN PHY name
>
> >
> > Roy,
> >
> > I believe that you and I agree on something.
> >
> > You said: "Ethernet over SONET/SDH is the standard that are being
> > developed in T1X1 and ITU."
> >
> > I said: "Ethernet Over SONET represents a specific proposal to IEEE
> > P802.3ae to map Ethernet to SONET."
> >
> > I believe that the latest reference to the proposal identified in both our
> > statements above is embodied in:
> > http://grouper.ieee.org/groups/802/3/ae/public/mar00/martin_1_0300.pdf.
> > Note that there have been many, many other presentations endorsing the
> > same general mapping given to IEEE P802.3ae over the course of the last
> > several months.
> >
> > Am I completely lost? Please tell me if the proposal referenced in the
> > link above is not an active proposal in front of IEEE P802.3? If it's
> > not, then I don't have to worry about it any more.
> >
> > Please help me differentiate between all of the following:
> >
> > a) T1X1.5/99-268r1;
> > b) Ethernet over SONET/SDH;
> > c) WAN compatible PHY being developed by the IEEE;
> > d) "Lite" version of SONET/SDH.
> >
> > I apologize in advance for my ignorance and any confusion I have caused
> > the committee.
> >
> > Best Regards,
> > Rich
> >
> > --
> >
> > Roy Bynum wrote:
> > >
> > > Rich,
> > >
> > > You need to pay more attention, or if you have been paying
> attention,stop
> > > generating confusion. Ethernet over SONET/SDH is the standard that are
> > > being developed in T1X1 and ITU. The WAN compatible PHY is being
> developed
> > > by IEEE. The WAN compatible PHY proposal uses a "Lite" version of
> > > SONET/SDH.
> > >
> > > Roy
> > >
> > > ----- Original Message -----
> > > From: Rich Taborek <rtaborek@xxxxxxxxxxxxx>
> > > To: HSSG <stds-802-3-hssg@xxxxxxxx>
> > > Sent: Thursday, April 06, 2000 12:57 PM
> > > Subject: Re: WAN PHY name
> > >
> > > >
> > > > Jay, Martin,
> > > >
> > > > I believe that Ethernet Over SONET represents a specific proposal to
> IEEE
> > > > P802.3ae to map Ethernet to SONET. Two problems with this:
> > > >
> > > > 1) It is not a proposal endorsed by a majority of IEEE P802.3ae
> members
> > > > interested in meeting the WAN objectives, nevermind 75%;
> > > >
> > > > 2) It is not applicable to supporting native Ethernet over the WAN in
> the
> > > > absence of SONET/SDH.
> > > >
> > > > Best Regards,
> > > > Rich
> > > >
> > > > --
> > > >
> > > > jay.hoge@xxxxxxxxxxxxxx wrote:
> > > > >
> > > > > How about EOS/S (Ethernet Over SONET / SDH)? The world extends
> beyond
> > > North
> > > > > America.
> > > >
> > > > -------------------------------------------------------
> > > > Richard Taborek Sr. Phone: 408-845-6102
> > > > Chief Technology Officer Cell: 408-832-3957
> > > > nSerial Corporation Fax: 408-845-6114
> > > > 2500-5 Augustine Dr. mailto:rtaborek@xxxxxxxxxxx
> > > > Santa Clara, CA 95054 http://www.nSerial.com
> >
> > -------------------------------------------------------
> > Richard Taborek Sr. Phone: 408-845-6102
> > Chief Technology Officer Cell: 408-832-3957
> > nSerial Corporation Fax: 408-845-6114
> > 2500-5 Augustine Dr. mailto:rtaborek@xxxxxxxxxxx
> > Santa Clara, CA 95054 http://www.nSerial.com
-------------------------------------------------------
Richard Taborek Sr. Phone: 408-845-6102
Chief Technology Officer Cell: 408-832-3957
nSerial Corporation Fax: 408-845-6114
2500-5 Augustine Dr. mailto:rtaborek@xxxxxxxxxxx
Santa Clara, CA 95054 http://www.nSerial.com