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Re: [Isis-wg] WG Adoption Call for draft-xu-isis-encapsulation-cap

Uma Chunduri <uma.chunduri@ericsson.com> Fri, 06 May 2016 20:01 UTC

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From: Uma Chunduri <uma.chunduri@ericsson.com>
To: "Les Ginsberg (ginsberg)" <ginsberg@cisco.com>, Xuxiaohu <xuxiaohu@huawei.com>, Marc Binderberger <marc@sniff.de>, Hannes Gredler <hannes@gredler.at>
Thread-Topic: [Isis-wg] WG Adoption Call for draft-xu-isis-encapsulation-cap
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Date: Fri, 06 May 2016 20:01:36 +0000
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Cc: Christian Hopps <chopps@chopps.org>, "isis-wg@ietf.org list" <isis-wg@ietf.org>
Subject: Re: [Isis-wg] WG Adoption Call for draft-xu-isis-encapsulation-cap
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Les,

        >"rlfa tag 100"
        > This indicates that any endpoint address advertised with tag 100 can be used for the specified technology ("rlfa" in this example).
        >The receiver of such an advertisement then knows two things about the advertising node:
        >1)It supports the tunnel type
        >2)It wants the specified address to be used as the tunnel endpoint

[Uma]: But this will not give any information if that particular tunnel type needs some parameters  of the sender at the receiver.
              Say for L2TPv3 Over IP, Session ID and optional Cookie and for GRE, you need GRE Key in some cases, for IPSec tunnel mode options etc.
             Some more tunnel specific information need to be exchanged is specified in Section 5 of the current version of the draft.
            I don't see a way tags help here and I alluded this on this thread and earlier.

--
Uma C.

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