LISP Working Group S. Barkai Internet-Draft Fermi.io Intended status: Informational F. Maino Expires: March 28,2023 A. Rodriguez-Natal Cisco Systems A. Cabellos-Aparicio J. Paillisse Vilanova Technical University of Catalonia D. Farinacci lispers.net November 23, 2022 Portable Edge Multipoint Sockets draft-barkai-lisp-pems-01 Abstract This document describes the interfaces and functionality of portable socket objects, allocated and delegated using eBPF like Unix stacks, across edge compute locations, per Unicast and Multicast Endpoint Identifiers (EID). Each socket is used either as a queue, aggregating upstream point to point and multipoint to point application frames, or as a channel, transmitting point to multipoint and multipoint to multipoint application frames. Portability of Unicast queue sockets and Multicast channel sockets, as well as packet replication, is achieved using the Locator/ID Separation Protocol (LISP). 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 February 28,2023. Barkai, et al. Expires March 28, 2023 [Page 1] Internet-Draft LISP November 2022 Copyright Notice Copyright (c) 2022 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 the Trust Legal Provisions and are provided without warranty as described in the Simplified BSD License. Table of Contents 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2 2. Definition of Terms . . . . . . . . . . . . . . . . . . . . . 4 3. Deployment Assumptions . . . . . . . . . . . . . . . . . . . 4 4. Security Considerations . . . . . . . . . . . . . . . . . . . 4 5. Privacy Considerations . . . . . . . . . . . . . . . . . . . 4 6. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 4 7. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 4 8. Normative References . . . . . . . . . . . . . . . . . . . . 5 Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 6 1. Introduction This document describes the interfaces and functionality of portable socket objects, allocated and delegated using eBPF like Unix stacks, across edge compute locations, per Unicast and Multicast Endpoint Identifiers (EID). Each socket is used either as a queue, aggregating upstream point to point and multipoint to point application frames, or as a channel, transmitting point to multipoint and multipoint to multipoint application frames. Portability of Unicast queue sockets and Multicast channel sockets, as well as packet replication, is achieved using the Locator/ID Separation Protocol (LISP). Distributed edge computing as well use of digital-twin constructs for processing the physical world require new network based paradigms. The basic dimensions of a digital-twin include: observable entity, the instantiated digital entity, the connection between them, the data models, raw and curated, and the services offered by digital twins as an intermediate processing and data reduction nodes for applications. Barkai, et al. Expires March 28, 2023 [Page 2] Internet-Draft LISP November 2022 In an open field like a city, unlike a closed factory, the scale and variance between mostly active and mostly idle observable entities is very high. Unlike testing facilities the connected sensors may be moving, feeding one twin one moment, another the next. Such conditions effect greatly the connection aspect of digital twins as the digital entities may be delegated at any point to another location in order to facilitate compute elasticity and recover from location disconnects. Sensors of the observed entities as well as clients of digital-twins' services may need to switch context often and quickly, as well as maintain continuity if and when mobile access IP anchor is switched. Portable queue and channel sockets help address these key issues. Queue sockets assemble application frames from packets uploaded by multiple EID sources using the LISP stack. They use a re-tunneling router (RTR) configured in the socket upon instantiation/delegation. Assembled frames are made available from kernel to user space logic Using eBPF-Map[] type mechanisms. Channel sockets use eBPF-Map[] type mechanisms to receive application frames as well group address EID. These frames are segmented into packets and transmitted using the LISP stack using the configured RTR for delivery using LISP signal-free multicast [RFC8378]. Off-Peak Socket Allocation Packed on less locations _ _ _ _ / \/ \ / \/ \ ---- \_/\_/ \_/\_/ ---- Peak Socket Allocation / \/ \ / \/ \ ---- Spread across more compute locations \_/\_/ \_/\_/ ---- _ _ _ _ _ _ _ _ / \/ \ / \/ \ ---- / \/ \ / \/ \ / \/ \ / \/ \ ---- \_/\_/ \_/\_/ ---- \_/\_/ \_/\_/ \_/\_/ \_/\_/ ---- / \/ \ / \/ \ ---- / \/ \ / \/ \ / \/ \ / \/ \ ---- \_/\_/ \_/\_/ ---- \_/\_/ \_/\_/ \_/\_/ \_/\_/ ---- ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ Site Site Standby Site Site Site Site Standby Figure 1: Dynamic allocation of sockets per observed entities activity Barkai, et al. Expires March 28,2023 [Page 3] Internet-Draft LISP November 2022 2. Definition of Terms Based on [RFC9300][RFC9301] PortableQueueEID: Is an EID addressable socket interface assembling point to point and multipoint to point application frames to user space clients from LISP packet interface. PortableChannelEID: Is an EID addressable socket interface segmenting point to multipoint and multipoint to multipoint application frames from user space clients to LISP packet interface. 3. Deployment Assumptions 4. Security Considerations The LISP overlay network is inherently secure and private. All information is conveyed using provisioned sockets. All traffic is carried over encrypted tunnels. 5. Privacy Considerations Privacy and anti-tracking of observed entity sensors. 6. Acknowledgments 7. IANA Considerations No IANA considerations. Barkai, et al. Expires March 28,2023 [Page 4] Internet-Draft LISP November 2022 8. Normative References [RFC9300] Farinacci, D., Fuller, V., Meyer, D., Lewis, D., and A. Cabellos, Ed., "The Locator/ID Separation Protocol (LISP)" , RFC 9300, DOI 10.17487/RFC9300, October 2022, . [RFC9301] Farinacci, D., Maino, F., Fuller, V., and A. Cabellos, Ed., "Locator/ID Separation Protocol (LISP) Control Plane", RFC 9301, DOI 10.17487/RFC9301, October 2022, . [RFC8378] Farinacci, D., Moreno, V., "Signal-Free Locator/ID Separation Protocol (LISP) Multicast", RFC8378, DOI 10.17487/RFC8378, May 2018, . Barkai, et al. Expires March 28,2023 [Page 5] Internet-Draft LISP November 2022 Authors' Addresses Sharon Barkai Fermi.io CA USA Email: sbarkai@gmail.com Alberto Rodriguez-Natal Cisco Systems 170 Tasman Drive San Jose, CA USA Email: natal@cisco.com Fabio Maino Cisco Systems 170 Tasman Drive San Jose, CA USA Email: fmaino@cisco.com Albert Cabellos-Aparicio Technical University of Catalonia Barcelona Spain Email: acabello@ac.upc.edu Jordi Paillisse-Vilanova Technical University of Catalonia Barcelona Spain Email: jordip@ac.upc.edu Dino Farinacci lispers.net San Jose, CA USA Email: farinacci@gmail.com Barkai, et al. Expires March 28,2023 [Page 6]