BGP NLRI App Meta Data for 5G Edge Computing Service
draft-dunbar-idr-5g-edge-compute-app-meta-data-01
Network Working Group L. Dunbar
Internet Draft Futurewei
Intended status: Standard K. Majumdar
Expires: May 2, 2021
CommScope
H. Wang
Huawei
November 2, 2020
BGP NLRI App Meta Data for 5G Edge Computing Service
draft-dunbar-idr-5g-edge-compute-app-meta-data-01
Abstract
This draft describes a new BGP Network Layer Reachability
Information (BGP NLRI) Path Attribute, AppMetaData, that can
distribute the 5G Edge Computing App running status and
environment, so that other routers in the 5G Local Data
Network can make intelligent decision on optimized forwarding
of flows from UEs. The goal is to improve latency and
performance for 5G Edge Computing services.
The extension enables a feature, called soft anchoring, which
makes one Edge Computing Server at one specific location to be
more preferred than others for the same application to receive
packets from a specific source (UE).
Status of this Memo
This Internet-Draft is submitted in full conformance with the
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Internet-Draft AppMetaData NLRI for 5G EC Service
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Table of Contents
1. Introduction.............................................. 3
1.1. 5G Edge Computing Background......................... 3
1.2. Problem#1: ANYCAST in 5G EC Environment.............. 5
1.3. Problem #2: Unbalanced Anycast Distribution due to UE
Mobility.................................................. 6
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1.4. Problem 3: Application Server Relocation............. 6
2. Conventions used in this document......................... 7
3. Usage of App Meta Data for 5G Edge Computing.............. 8
3.1. Overview............................................. 8
3.2. IP Layer Metrics to Gauge Application Behavior....... 9
3.3. To Equalize among Multiple ANYCAST Locations........ 10
3.4. BGP Protocol Extension to advertise Load & Capacity. 10
4. The NLRI Path Attribute for App Meta Data................ 11
4.1. Load Measurement sub-TLV format..................... 13
4.2. Capacity Index sub-TLV format....................... 14
4.3. The Site Preference Index sub-TLV format............ 14
5. Soft Anchoring of an ANYCAST Flow........................ 15
6. Manageability Considerations............................. 17
7. Security Considerations.................................. 17
8. IANA Considerations...................................... 17
9. References............................................... 17
9.1. Normative References................................ 17
9.2. Informative References.............................. 17
10. Acknowledgments......................................... 18
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