Re: [Detnet] Comments on 4 Technical Requirements in Large-Scale Deterministic (draft-liu-detnet-large-scale-requirements)

[Peng Liu <[e-mail]>]

Hi Cheng,

Thank you for your comments. Let me try to understand your proposal.

The proposed new section name of "Supports hierarchical deterministic peers" is a little hard to be understood from the my side. According to the proposed text below, I guess you mean to decouple multiple domains as possible based on the gateways at edge or between two domains, which could support flow access control, traffic shaping, traffic mark, deterministic scheduling, and jitter compression. 

So if my understanding is right, the point is to enhance the gateways, which was mentioned in 'section 4.7 Support Queueing Mechanisms Switchover Crossing Multi-domains'. We can discuss more about whether or how to merge your proposal into the existing section. 

BTW, I think more explanation of your text and/or some key words such as 'jitter compression' will help us understand better of it. Thanks.

Regards,
Peng 


[e-mail]
 
From: Chengzuopin
Date: 2022-07-29 19:50
To: [e-mail]
CC: [e-mail]; [e-mail]; Zhushiyin; Zhoulei
Subject: [Detnet] Comments on 4 Technical Requirements in Large-Scale Deterministic (draft-liu-detnet-large-scale-requirements)
Hi Peng, 
  Suggest “Chapter 4 Technical Requirements in Large-Scale Deterministic” to add new chapter “4.8 Supports hierarchical deterministic peers”. 
 
4.8 Supports hierarchical deterministic peers
Large-scale deterministic network can often cross multiple domains, and one of DetNet network's goals is to provide end-to-end deterministic latency services. The technology and capabilities of each domain are different and the corresponding topology models are either segmented or nested. In this way, it is necessary to reduce the coupling between two domains as much as possible, as long as the network meets a certain range of requirements and end-to-end devices implement the jitter compression, end-to-end deterministic latency services can be supported. For example, the two-end user networks are carried by the operator's intermediate network. As long as the operator's intermediate network ensures its end-to-end latency, bounded jitter and reliability capabilities for deterministic flow,  the operator network can be made as a pipeline for the two-end user network. So gateway equipment deployed on both ends utilizes these mechanisms including flow access control, traffic shaping, traffic mark, deterministic scheduling, and jitter compression to meet the end-to-end deterministic latency service.
 Best,
cheng
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