[mpls] MPLS-RT review of draft-bonica-mpls-self-ping

[Mach Chen <[e-mail]>]

Hi Authors,

I am selected as MPLS-RT reviewer for draft-bonica-mpls-self-ping-04, and here are my MPLS-RT review comments on the draft.

1. The draft is well written and the problem is well stated.

2. The draft does not specify the self-ping is designed for all types of LSP or just some of them (e.g., only RSVP-TE LSP), clarification is needed.

3. The self-ping cannot guarantee that the returned Echo Reply is definitely from the egress, hence it can't completely solve the black-holing issue. 

4. LSP Ping and BFD (especially S-BFD) are alternative tools for LSP readiness detection. If the scalability of control plane is the concern, there should be an analyses whether S-BFD cannot satisfy the requirement. 


Best regards,
Mach

> 
> -----Original Message-----
> Subject: MPLS-RT review of draft-bonica-mpls-self-ping
> Date: Tue, 24 Feb 2015 17:42:14 +0800
> From: Loa Andersson <[e-mail]>
> To: Carlos Pignataro (cpignata) <[e-mail]>, Gregory Mirsky
> <[e-mail]>, Mach Chen <[e-mail]>,
> Lizhong Jin <[e-mail]>, [e-mail]
> <[e-mail]>, [e-mail]
> <[e-mail]>, <[e-mail]>
> <[e-mail]>
> 
> Carlos, Greg, Mach and Lizhong,
> 
> You have be selected as MPLS-RT reviewers for draft-bonica-mpls-self- ping-04.
> 
> Note to authors: You have been CC'd on this email so that you can know that this
> review is going on. However, please do not review your own document.
> 
> Reviews should comment on whether the document is coherent, is it useful (ie,
> is it likely to be actually useful in operational networks), and is the document
> technically sound?  We are interested in knowing whether the document is
> ready to be considered for WG adoption (ie, it doesn't have to be perfect at this
> point, but should be a good start).
> 
> Reviews should be sent to the document authors, WG co-chairs and WG
> secretary, and CC'd to the MPLS WG email list. If necessary, comments may be
> sent privately to only the WG chairs.
> 
> If you have technical comments you should try to be explicit about what
> *really* need to be resolved before adopting it as a working group document,
> and what can wait until the document is a working group document and the
> working group has the revision control.
> 
> Are you able to review this draft by Mar 11, 2015? Please respond in a timely
> fashion.
> 
> 
> Thanks, Loa
> (as MPLS WG chair)
> --
> 
> 
> Loa Andersson                        email: [e-mail]
> Senior MPLS Expert                          [e-mail] Huawei
> Technologies (consultant)     phone: [phone]
> 
> 
>