BGP-LS Filters : A Framework for Network Slicing and Enhanced VPNs
draft-drake-bess-enhanced-vpn-02
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2019-11-04
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BESS Working Group J. Drake
Internet-Draft Juniper Networks
Intended status: Standards Track A. Farrel
Expires: May 7, 2020 Old Dog Consulting
L. Jalil
Verizon
A. Lingala
AT&T
November 4, 2019
BGP-LS Filters : A Framework for Network Slicing and Enhanced VPNs
draft-drake-bess-enhanced-vpn-02
Abstract
Future networks that support advanced services, such as those enabled
by 5G mobile networks, envision a set of overlay networks each with
different performance and scaling properties. These overlays are
known as network slices and are realized over a common underlay
network.
In order to support network slicing, as well as to offer enhanced VPN
services in general, it is necessary to define a mechanism by which
specific resources (links and/or nodes) of an underlay network can be
used by a specific network slice, VPN, or set of VPNs. This document
sets out such a mechanism for use in Segment Routing networks.
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 May 7, 2020.
Drake, et al. Expires May 7, 2020 [Page 1]
Internet-Draft MPLS SFC November 2019
Copyright Notice
Copyright (c) 2019 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
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Requirements Language . . . . . . . . . . . . . . . . . . . . 3
3. Overview of Approach . . . . . . . . . . . . . . . . . . . . 3
4. Detailed Protocol Operation . . . . . . . . . . . . . . . . . 5
4.1. The BGP-LS Filter Attribute . . . . . . . . . . . . . . . 7
4.1.1. The Filter TLV . . . . . . . . . . . . . . . . . . . 8
4.1.2. The DSCP List TLV . . . . . . . . . . . . . . . . . . 9
4.1.3. The Color List TLV . . . . . . . . . . . . . . . . . 10
4.1.4. The Root TLV . . . . . . . . . . . . . . . . . . . . 10
4.2. Error Handling . . . . . . . . . . . . . . . . . . . . . 11
5. Comparison With ACTN . . . . . . . . . . . . . . . . . . . . 12
6. Examples . . . . . . . . . . . . . . . . . . . . . . . . . . 12
6.1. MP2MP Connectivity . . . . . . . . . . . . . . . . . . . 13
6.2. P2MP Unidirectional Connectivity . . . . . . . . . . . . 14
6.3. P2P Unidirectional Connectivity . . . . . . . . . . . . . 15
6.4. P2P Bidirectional Connectivity . . . . . . . . . . . . . 16
7. Security Considerations . . . . . . . . . . . . . . . . . . . 17
8. Manageability Considerations . . . . . . . . . . . . . . . . 17
9. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 17
9.1. New BGP Path Attribute . . . . . . . . . . . . . . . . . 17
9.2. New BGP-LS Filter attribute TLVs Type Registry . . . . . 18
10. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 18
11. References . . . . . . . . . . . . . . . . . . . . . . . . . 18
11.1. Normative References . . . . . . . . . . . . . . . . . . 18
11.2. Informative References . . . . . . . . . . . . . . . . . 20
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 21
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