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Re: [DMM] FW: I-D Action: draft-ietf-dmm-deployment-models-01.txt

"Seil Jeon" <seiljeon@gmail.com> Wed, 20 September 2017 07:12 UTC

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From: Seil Jeon <seiljeon@gmail.com>
To: 'Do Truong Xuan' <thespring1989@gmail.com>
Cc: dmm@ietf.org
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Date: Wed, 20 Sep 2017 16:12:04 +0900
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Subject: Re: [DMM] FW: I-D Action: draft-ietf-dmm-deployment-models-01.txt
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Hi Xuan,

 

Thanks for your comments.

Please see inline.

 

Regards,

Seil Jeon

 

 

From: Do Truong Xuan [mailto:thespring1989@gmail.com] 
Sent: Wednesday, September 20, 2017 12:19 AM
To: seiljeon@gmail.com; dmm@ietf.org
Subject: Re: [DMM] FW: I-D Action: draft-ietf-dmm-deployment-models-01.txt

 




Dear Seil !

I have some comments on deployment architecture document as follows:

 

+ In the Figure 1, the authors mentioned about primitive function "NSH classifier" supported by H-DPA or A-DPN, could you elaborate more how this service could support DMM.

NSH classifiers (for SFC) will at data-plane entities, i.e., DPA and/or DPN, which will be deployed in a distributed manner. 

For the functionality of DPA and DPN in terms of SFC, you can find what context data is maintained by the FPC Agent at 4.3.2.1. and 4.3.2.2. in https://tools.ietf.org/html/draft-ietf-dmm-fpc-cpdp-08 

 

+ Other service primitive such as IP management, IP anchoring, mobility controller deserve more explanation to better understand the DMM functions 

IP management means IP address assignment and management. The mobility controller itself is given to call a control entity which can be different depending on the model introduced. In Model-3, we call the combined home-CPA and access-CPN a mobility controller. In the on-demand control plane orchestration mode, it is called an orchestrator of all the mobility-related control-plane and data-plane anchors/nodes.

 

+ In Section 4.3, model 3, IMO this is centralized architecture for signaling and distributed for data plane functions similar to SDN architecture. However, in description text, authors  wrote "this is a flat architecture" --> need more elaboration

You need to look at the relationship between the access node and home-DPA for the meaning of “flat architecture”. 

 

Some other spelling errors:

+ in Section 3.2.1, homd-dpa --> home-dpa 

Wow! Will be fixed in a next update.

 

 + Section 3.2.5, DMM function --> DMM functions

O.K

 

BRs,

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