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Re: [Pals] Suresh Krishnan's Discuss on draft-ietf-pals-endpoint-fast-protection-04: (with DISCUSS)

Yimin Shen <yshen@juniper.net> Thu, 15 December 2016 13:17 UTC

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From: Yimin Shen <yshen@juniper.net>
To: Suresh Krishnan <suresh.krishnan@ericsson.com>, The IESG <iesg@ietf.org>, "Carlos Pignataro (cpignata)" <cpignata@cisco.com>
Thread-Topic: Suresh Krishnan's Discuss on draft-ietf-pals-endpoint-fast-protection-04: (with DISCUSS)
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Date: Thu, 15 Dec 2016 13:17:14 +0000
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Cc: "draft-ietf-pals-endpoint-fast-protection@ietf.org" <draft-ietf-pals-endpoint-fast-protection@ietf.org>, "pals-chairs@ietf.org" <pals-chairs@ietf.org>, "pals@ietf.org" <pals@ietf.org>, Stewart Bryant <stewart.bryant@gmail.com>
Subject: Re: [Pals] Suresh Krishnan's Discuss on draft-ietf-pals-endpoint-fast-protection-04: (with DISCUSS)
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Hi Suresh, Carlos,

After rethinking of this, yes, I think you’ve made a good point, and I agree with you on that proposal. We will add encodings for IPv6 PE addresses for PWid and Generalized PWid in sections 6.4.1 and 6.4.2, respectively. This will be in a manner similar to RFC 6829.

Thanks again for your review and this valuable comment!

Thanks,

-- Yimin


On 12/14/16, 10:55 PM, "Suresh Krishnan" <suresh.krishnan@ericsson.com> wrote:

    Hi Yimin,
    
    On 12/14/2016 01:57 PM, Yimin Shen wrote:
    > Hi Suresh,
    >
    > Thanks very much for your review and the question about section 6.4.1 and 6.4.2.
    >
    > This document does not define any new encoding. Instead it is using the definitions of RFC4447, as noted in 6.4 for intro to 6.4.1 and 6.4.2. Specifically, the “Protection FEC Element TLV” uses the encoding and semantics of PWid FEC and Genercalize PWid FEC defined in RFC 4447. These FECs carry IPv4 addresses, and there is currently no IPv6 encoding defined for these FECs by IETF.
    
    I have a hard time understanding how this document does not define a new 
    encoding. The title of the section 6.4.1. is "Encoding Format for PWid" and 
    the TLV type is 0x83 which is *not* defined in RFC4447. Can you please 
    clarify what you mean? I think the proposal by Carlos to resolve this seems 
    to be reasonable to me.
    
    Thanks
    Suresh

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