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Re: [1904.2 TF] The latest layering diagram

To be honest, I am a bit confused about the purpose of the UMT (may be this is due to lack of background on my side due to missing the earlier meetings).

Are we mentioning the GPON as a specific use-case example of "Other non-OAM clients" or is that the only client that can directly interact with UMT?

If it is the only one, I am more confused about the activity because it seems that the UMT is now required to deal with "OMCI_requests" (per the picture)  which is a very specific functional extension designed for GPON in the 1904. 

If not, then I am also curious to learn the other examples that will use both the OAM client and/or  directly interact with UMT sublayer. In those cases which messages will be used to directly interact with UMT since the picture refers to such direct messages as "OMCI_requests" and "OMCI_indication".

Best Regards

Arkin


On 6/10/2019 8:42 AM, Marek Hajduczenia wrote:

The one question I do have – why do we even have to show OMCI? There are many other clients which may (or may not) be supported. Do we have now to show all of them?

 

Rather than show OMCI, I’d recommend showing just “Other non-OAM clients” instead to cover them all with a single drawing

 

Marek

 

From: stds-1904-2-tf@xxxxxxxx <stds-1904-2-tf@xxxxxxxx> On Behalf Of Glen Kramer
Sent: Wednesday, June 5, 2019 12:07 PM
To: STDS-1904-2-TF@xxxxxxxxxxxxxxxxx
Subject: The latest layering diagram

 

All,

 

In Salt Lake City, Kevin and I discussed the UMT layering diagram some more. The focus was on how to support the C57 loopback, while a device may be receiving both native OAMPDUs and OAM over UMTPDUs.

Another challenge was the desire to support OMCI, which also can be in two forms: OMCI over OAMPDUs (per ITU-T G.988) or OMCI directly over UMTPDUs.

Kevin and I believe the following layering diagram solves all these issues.

 

 

These diagram is somewhat similar to what I presented on the last conference call, but it has the UMT layer extended to allow native OMCI interface to OMCI client.

You may want to look again at the presentation from the call, which explains how UMT layer operates.

http://www.ieee1904.org/2/meeting_archive/2019/04/tf2_1904_kramer_layering_3.pdf

 

 

-Glen

 

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