[sfc] [SFC] Comments of draft-krishnan-sfc-oam-req-framework

meng.wei2@zte.com.cn Tue, 08 July 2014 03:02 UTC

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Subject: [sfc] [SFC] Comments of draft-krishnan-sfc-oam-req-framework
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Hi co-authors, guys,

Here are two comments and questions on this draft.

1)
+---+ +-+ +-+ +---+
|NVE|-|B|-|B|-|NVE|
+---+ +-+ +-+ +---+
       x---x          L2


I don't know why B&B are between NVEs rather than "L3 network".
If refer to draft-ietf-nvo3-arch-01, here should be "R" and IP-OAM.

2) 
+-+ +--+ +-+ +-+ +--+
|B|-|SF|-|R|-|R|-|SF|
+-+ +--+ +-+ +-+ +--+
Classifer is the beginning of SFC, there might be a overlay network 
between a classifer and an SF. I'm not sure classifer should be disscussed
here and there might exist an OAM mechanism between classifers and SFs.

2) Any other scenarios? Only DC is not sufficient. I propose to 
add some broadband & mobility scenarios.


Thanks,
Wei