LISP L2/L3 EID Mobility Using a Unified Control Plane
draft-ietf-lisp-eid-mobility-06
Network Working Group M. Portoles
Internet-Draft V. Ashtaputre
Intended status: Experimental V. Moreno
Expires: November 22, 2020 F. Maino
Cisco Systems
D. Farinacci
lispers.net
May 21, 2020
LISP L2/L3 EID Mobility Using a Unified Control Plane
draft-ietf-lisp-eid-mobility-06
Abstract
The LISP control plane offers the flexibility to support multiple
overlay flavors simultaneously. This document specifies how LISP can
be used to provide control-plane support to deploy a unified L2 and
L3 overlay solution for End-point Identifier (EID) mobility, as well
as analyzing possible deployment options and models.
Requirements Language
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
document are to be interpreted as described in [RFC2119].
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
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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 November 22, 2020.
Portoles, et al. Expires November 22, 2020 [Page 1]
Internet-Draft L2/L3 EID Mobility May 2020
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Definition of Terms . . . . . . . . . . . . . . . . . . . . . 4
3. Reference System . . . . . . . . . . . . . . . . . . . . . . 4
4. L3 Overlays and Mobility Support . . . . . . . . . . . . . . 6
4.1. Reference Architecture and packet flows . . . . . . . . . 6
4.1.1. Routed Traffic Flow: L3 Overlay use . . . . . . . . . 6
4.1.2. L3 Mobility Flow . . . . . . . . . . . . . . . . . . 7
4.1.2.1. L3 Mobility Flow using Data Driven SMRs . . . . . 7
4.1.2.2. L3 Mobility Flow using Publish/Subscribe
Mechanisms . . . . . . . . . . . . . . . . . . . 8
4.2. Implementation Considerations . . . . . . . . . . . . . . 9
4.2.1. L3 Segmentation . . . . . . . . . . . . . . . . . . . 9
4.2.2. L3 Database-Mappings . . . . . . . . . . . . . . . . 9
4.2.3. LISP Mapping System support . . . . . . . . . . . . . 10
4.2.4. Using SMRs to Track Moved-Away Hosts . . . . . . . . 11
4.2.5. L3 multicast support . . . . . . . . . . . . . . . . 11
4.2.6. Time-to-Live Handling in Data-Plane . . . . . . . . . 11
5. L2 Overlays and Mobility Support . . . . . . . . . . . . . . 11
5.1. Reference Architecture and packet flows . . . . . . . . . 11
5.1.1. Bridged Traffic Flow: L2 Overlay use . . . . . . . . 12
5.1.2. L2 Mobility Flow . . . . . . . . . . . . . . . . . . 13
5.1.2.1. L2 Mobility Flow using Data Driven SMRs . . . . . 13
5.1.2.2. L2 Mobility Flow using Publish/Subscribe
mechanisms . . . . . . . . . . . . . . . . . . . 14
5.2. Implementation Considerations . . . . . . . . . . . . . . 14
5.2.1. L2 Segmentation . . . . . . . . . . . . . . . . . . . 14
5.2.2. L2 Database-Mappings . . . . . . . . . . . . . . . . 15
5.2.3. Interface to the LISP Mapping System . . . . . . . . 16
5.2.4. SMR support to track L2 hosts that moved away . . . . 16
5.2.5. L2 Broadcast and Multicast traffic . . . . . . . . . 17
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