BGP-LS Extensions for Transport Slice
draft-chen-idr-bgp-ls-transport-slice-01
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L R. chen
Internet-Draft Sh. Peng
Intended status: Standards Track ZTE Corporation
Expires: December 9, 2020 June 7, 2020
BGP-LS Extensions for Transport Slice
draft-chen-idr-bgp-ls-transport-slice-01
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 December 9, 2020.
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 December 9, 2020 [Page 1]
Internet-Draft BGP-LS Extensions for TS June 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 Attributes 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. 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
"OPTIONAL" in this document are to be interpreted as described in BCP
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