BGP-LS Extensions for Transport Slice
draft-chen-idr-bgp-ls-transport-slice-02
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Shaofu Peng
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2020-09-02
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L R. chen
Internet-Draft Sh. Peng
Intended status: Standards Track ZTE Corporation
Expires: March 6, 2021 September 2, 2020
BGP-LS Extensions for Transport Slice
draft-chen-idr-bgp-ls-transport-slice-02
Abstract
[I-D.peng-teas-network-slicing] defines a unified TN-slice
identifier, AII(administrative instance identifier), to indicate the
topology, computing, storage resources of the dedicated virtual
network for both intra-domain and inter-domain network slicing
scenarios. This draft defines extensions to BGP-LS protocol in order
to advertise the information of the transport slice.
Status of This Memo
This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79.
Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF). Note that other groups may also distribute
working documents as Internet-Drafts. The list of current Internet-
Drafts is at https://datatracker.ietf.org/drafts/current/.
Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress."
This Internet-Draft will expire on March 6, 2021.
Copyright Notice
Copyright (c) 2020 IETF Trust and the persons identified as the
document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents
(https://trustee.ietf.org/license-info) in effect on the date of
publication of this document. Please review these documents
carefully, as they describe your rights and restrictions with respect
to this document. Code Components extracted from this document must
include Simplified BSD License text as described in Section 4.e of
chen & Peng Expires March 6, 2021 [Page 1]
Internet-Draft BGP-LS Extensions for TS September 2020
the Trust Legal Provisions and are provided without warranty as
described in the Simplified BSD License.
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Requirements Language . . . . . . . . . . . . . . . . . . . . 3
3. BGP-LS Extensions for transport slice . . . . . . . . . . . . 3
3.1. Node Attribute TLVs . . . . . . . . . . . . . . . . . . . 3
3.1.1. TN-slice identifier Participation TLV . . . . . . . . 3
3.2. Link Attribute TLVs . . . . . . . . . . . . . . . . . . . 4
3.2.1. TN-slice Identifier list sub-TLV . . . . . . . . . . 4
3.2.2. L2 Bundle Member TN-Slice Identifier TLV . . . . . . 5
3.2.3. Adjacency-SID for TN-slice Identifier TLV . . . . . . 5
3.2.4. LAN-Adj-SID for TN-slice Identifier TLV . . . . . . . 6
3.3. Prefix Attribute TLVs . . . . . . . . . . . . . . . . . . 7
4. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 8
5. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 9
6. Normative References . . . . . . . . . . . . . . . . . . . . 9
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 10
1. Introduction
For a packet network, network slicing requires the underlying network
to support partitioning of the network resources to provide the
client with dedicated (private) networking, computing, and storage
resources drawn from a shared pool. [I-D.peng-teas-network-slicing]
defines a unified TN-slice identifier, AII(administrative instance
identifier), to indicate the topology, computing, storage resources
of the dedicated virtual network for both intra-domain and inter-
domain network slicing scenarios, and how to compute SR-BE or SR-TE
path according to TN-slice Identifier combined with other criteria.
[I-D.zch-lsr-isis-network-slicing] defines the IS-IS extensions
required to distribute TN-slice Identifier(that is AII) information
in an AS.
In order to satisfy the need for applications that require
topological visibility across one area or Autonomous System (AS).
This document specifies extensions to the BGP Link-state address-
family in order to advertise TN-slice specific information. An
external component (e.g., a controller) then can collect TN-slice
information in the "northbound" direction.
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2. Requirements Language
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and
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