[Teas] Definitions in draft-ietf-teas-yang-te-21
Italo Busi <Italo.Busi@huawei.com> Wed, 31 July 2019 16:07 UTC
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From: Italo Busi <Italo.Busi@huawei.com>
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Thread-Topic: Definitions in draft-ietf-teas-yang-te-21
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Date: Wed, 31 Jul 2019 16:07:47 +0000
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Subject: [Teas] Definitions in draft-ietf-teas-yang-te-21
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During the review of draft-ietf-ccamp-transport-nbi-app-statement-05, the CCAMP WG Transport NBI DT has noted that the following definitions, provided in draft-ietf-teas-te-topo-and-tunnel-modeling-04, should actually be better moved/copied to draft-ietf-teas-yang-te:
o TE tunnel - a connection-oriented service provided by a layer
network of delivery of a client's data between source and
destination tunnel termination points. A TE tunnel in a server
layer network may support a link in a client layer network (e.g.
OCh layer TE tunnel supporting ODU4 link). In Figure 20, a TE
tunnel interconnects tunnel termination points resident on
switches C-R2 and C-R3. A TE tunnel is realized via (supported by,
mapped onto) one or more layer network connections/LSPs
o TE tunnel hand-off point - an access link or inter-domain link by
which a multi-domain TE tunnel enters or exits a given network
domain, in conjunction with a layer network resource (such as a
wavelength channel or ODUk container) allocated on the
access/inter-domain link for the TE tunnel.
o TE tunnel segment - a part of a multi-domain TE tunnel that spans
a given network domain and is directly and fully controlled by the
domain's controller, DC. TE tunnel segment is a fragment of a
multi-domain TE tunnel between
1. the source tunnel termination point and the TE tunnel hand-off
point outbound from the TE tunnel's first domain (head TE tunnel
segment);
2. inbound and outbound TE tunnel hand-off points into/from a given
domain (transit TE tunnel segment);
3. inbound TE tunnel hand-off point into the TE tunnel's last
domain and the destination tunnel termination point (tail TE
tunnel segment);
We would propose to add these definitions to draft-ietf-teas-yang-te-21
Thanks, Italo (on behalf of the Transport NBI DT)
Italo Busi
Principal Optical Transport Network Research Engineer
Huawei Technologies Co., Ltd.
Tel : +39 345 4721946
Email : italo.busi@huawei.com
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