LISP Working Group S. Barkai
Internet-Draft Nexar
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
December 5, 2022
Portable Edge Multipoint Sockets
draft-barkai-lisp-pems-05
Abstract
In this document we simplify the use of the location/identity
separation protocol (LISP) for performing on-path scaling and service
selection in environments where off-path web measures such as DNS and
HTTP redirects do not perform well. Scaling simplification is achieved
by abstracting multipoint queue/channel socket communication objects,
addressed by well known or algorithmic endpoint identifiers (EID).
Multipoint sockets are decoupled from specific user-space processes,
are portable between hosts and network locations. Portability applied
by system management according to global considerations relies on the
LISP network for on-path steering between roaming clients and elastic
functional processing. Interoperable on-path scaling is achieved by
application specific socket addressing scheme.
Status of This Memo
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provisions of BCP 78 and BCP 79.
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This Internet-Draft will expire on February 28,2023.
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Copyright Notice
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document authors. All rights reserved.
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Definition of Terms . . . . . . . . . . . . . . . . . . . . . . 4
3. Deployment Assumptions . . . . . . . . . . . . . . . . . . . . 5
4. Security Considerations . . . . . . . . . . . . . . . . . . . . 6
5. Privacy Considerations . . . . . . . . . . . . . . . . . . . . 6
6. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . 6
7. IANA Considerations . . . . . . . . . . . . . . . . . . . . . . 6
8. Normative References . . . . . . . . . . . . . . . . . . . . . 7
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 8
1. Introduction
Next generation Internet of Things (IoT), Augmented/Virtual Reality
(AR/VR) applications involve sensors and clients moving across access
anchors backed by processing functions elastically allocated per
activity across low-latency, high north-south capacity edge locations.
Traditional off-path DNS resolutions and HTTP redirects used for
services selection and scaling do not function well in these
environments. Behavior differs from that of centralized clouds which
contain changes preventing mass cached resolutions invalidation.
Redirects not co-located within clouds tend to oscillate across
locations and recover slowly from location disconnects.
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In this document we simplify the use of the location/identity
separation protocol (LISP) for performing on-path scaling and service
selection in environments where off-path web measures such as DNS and
HTTP redirects do not perform well. Scaling simplification is achieved
by abstracting multipoint queue/channel socket communication objects,
addressed by well known or algorithmic endpoint identifiers (EID).
Multipoint sockets are decoupled from specific user-space processes,
are portable between hosts and network locations. Portability applied
by system management according to global considerations relies on the
LISP network for on-path steering between roaming clients and elastic
functional processing. Interoperable on-path scaling is achieved by
application specific socket addressing scheme.
Portable multipoint queues and channels abstraction:
Queue sockets assemble application frames from packets uploaded by
multiple EID sources using the LISP stack through re-tunneling router
(RTR) configured upon instantiation or delegation. Assembled frames
are made available from socket to user space functional processing.
Channel sockets receive application frames and theme EIDs. Frames are
segmented into packets and transmitted using the LISP stack via a
configured RTR for delivery by signal-free (s,g) 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 across locations per activity
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2. Definition of Terms
Based on [RFC9300][RFC9301]
Edge Computing: a distributed computing paradigm that brings
computation closer to the sources of data. This is expected to
improve response times and save bandwidth. Programability of edge
computing can be associated with Internet of Things (IOT)
applications.
Edge Traffic Steering: Traffic steering defines the different paths
that application traffic can take to traverse the network.
Destination zone is also determined by these paths. In edge
computing traffic steering can be used for network-based service
selection.
Socket: is a software structure within a network node of a computer
network that serves as an endpoint for sending and receiving data
across the network. Typical Unix sockets are coupled with specific
processes, however this document does not assume this model. A
functional and more portable programming model may be used to
access sockets structure.
EndpointIdentifier (EID): is a source and destination address of hosts
in a typical LISP network. In this document EIDs are used to
distinguish between socket objects regardless of the host they are
instantiated in right now.
PortableQueueEID: an EID-addressable socket interface assembling point
to point and multipoint to point application frames to user space
from the LISP packet interface.
PortableChannelEID: an EID-addressable socket interface segmenting
point to multipoint and multipoint to multipoint application frames
from user space to the LISP interface.
SensorEID: the EID of a connected sensor which uploads
data and media frames for curation and processing.
ClientEID: the EID of a client subscribed to a published service
(EID Source, EID theme).
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3. Deployment Assumptions
(1) An application defines an EID addressing scheme to facilitate
the communication between Sensor and Client EIDs, and PortableQueue
PortableChannel EIDs.
(2) EIDs and RTRs are assigned to SensorEIDs and ClientEIDs
(3) EIDs and RTRs are assigned to instantiated PortableQueueEIDs and
PortableChannelEIDs.
(4) PortableQueueEIDs, PortableChannelEIDs are deployed across a
LISP overlay network.
(5) Routing Locations (RLOC) of sensors and clients are determined by
their current access anchor.
(6) Socket RLOCS are determined by the edge compute instantiation and
delegation procedures
(7) Traffic is steered by LISP: from SensorEIDs to PortableQueueEIDs,
and from PortableChannelEIDs to subscribed ClientEIDs.
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4. Security Considerations
The LISP overlay network is inherently secure and private.
All information is conveyed using provisioned sockets.
Provisioned sockets EIDs and RLOCs configured in RTRs.
All traffic may be carried over encrypted encapsulation.
5. Privacy Considerations
Privacy and anti-tracking of clients and sensors by use of ephemeral
EIDs which are configured in RTRs.
6. Acknowledgments
7. IANA Considerations
No IANA considerations.
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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, <https://www.rfc-editor.org/info/rfc9300>.
[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, <https://www.rfc-editor.org/info/rfc9301>.
[RFC8378] Farinacci, D., Moreno, V., "Signal-Free Locator/ID
Separation Protocol (LISP) Multicast", RFC8378,
DOI 10.17487/RFC8378, May 2018,
<https://www.rfc-editor.org/info/rfc8378>.
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Authors' Addresses
Sharon Barkai
Nexar
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
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