BGP-LS Filters : A Framework for Network Slicing and Enhanced VPNs
draft-drake-bess-enhanced-vpn-05
BESS Working Group J. Drake
Internet-Draft Juniper Networks
Intended status: Standards Track A. Farrel
Expires: June 10, 2021 Old Dog Consulting
L. Jalil
Verizon
A. Lingala
AT&T
December 7, 2020
BGP-LS Filters : A Framework for Network Slicing and Enhanced VPNs
draft-drake-bess-enhanced-vpn-05
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 the context of IETF technologies, they are known as IETF
network slices.
In order to support IETF 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
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provisions of BCP 78 and BCP 79.
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material or to cite them other than as "work in progress."
This Internet-Draft will expire on June 10, 2021.
Drake, et al. Expires June 10, 2021 [Page 1]
Internet-Draft MPLS SFC December 2020
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Requirements Language . . . . . . . . . . . . . . . . . . . . 3
3. Overview of Approach . . . . . . . . . . . . . . . . . . . . 4
4. Detailed Protocol Operation . . . . . . . . . . . . . . . . . 6
4.1. The BGP-LS Filter Attribute . . . . . . . . . . . . . . . 8
4.1.1. The Filter TLV . . . . . . . . . . . . . . . . . . . 9
4.1.2. The DSCP List TLV . . . . . . . . . . . . . . . . . . 10
4.1.3. The Color List TLV . . . . . . . . . . . . . . . . . 11
4.1.4. The Root TLV . . . . . . . . . . . . . . . . . . . . 12
4.2. Error Handling . . . . . . . . . . . . . . . . . . . . . 12
5. Comparison With ACTN . . . . . . . . . . . . . . . . . . . . 13
6. Examples . . . . . . . . . . . . . . . . . . . . . . . . . . 14
6.1. MP2MP Connectivity . . . . . . . . . . . . . . . . . . . 14
6.2. P2MP Unidirectional Connectivity . . . . . . . . . . . . 15
6.3. P2P Unidirectional Connectivity . . . . . . . . . . . . . 16
6.4. P2P Bidirectional Connectivity . . . . . . . . . . . . . 17
7. Security Considerations . . . . . . . . . . . . . . . . . . . 18
8. Manageability Considerations . . . . . . . . . . . . . . . . 18
9. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 19
9.1. New BGP Path Attribute . . . . . . . . . . . . . . . . . 19
9.2. New BGP-LS Filter attribute TLVs Type Registry . . . . . 19
10. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 20
11. Contributors . . . . . . . . . . . . . . . . . . . . . . . . 20
12. References . . . . . . . . . . . . . . . . . . . . . . . . . 20
12.1. Normative References . . . . . . . . . . . . . . . . . . 20
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