MS-originated SMRs
draft-rodrigueznatal-lisp-ms-smr-06
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LISP Working Group A. Rodriguez-Natal
Internet-Draft Cisco Systems
Intended status: Informational A. Cabellos-Aparicio
Expires: October 6, 2018 Technical University of Catalonia
V. Ermagan
F. Maino
Cisco Systems
S. Barkai
Fermi Serverless
April 4, 2018
MS-originated SMRs
draft-rodrigueznatal-lisp-ms-smr-06
Abstract
This document extends [RFC6830] to allow Map Servers to send SMR
messages.
This extension is intended to be used in some SDN deployments that
use LISP as a southbound protocol with (P)ITRs that are compliant
with [RFC6830]. In this use-case mapping updates do not come from
ETRs, but rather from a centralized controller that pushes the
updates directly to the Mapping System. In such deployments, Map
Servers will benefit from having a mechanism to inform directly
(P)ITRs about updates in the mappings they are serving. Although
implementations of this extension exist, this extension is deprecated
by [I-D.rodrigueznatal-lisp-pubsub] and it is being documented for
informational purposes. Newer implementations should look into
[I-D.rodrigueznatal-lisp-pubsub] to support PubSub in LISP
deployments.
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."
Rodriguez-Natal, et al. Expires October 6, 2018 [Page 1]
Internet-Draft MS-originated SMRs April 2018
This Internet-Draft will expire on October 6, 2018.
Copyright Notice
Copyright (c) 2018 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
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described in the Simplified BSD License.
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
1.1. Requirements Language . . . . . . . . . . . . . . . . . . 3
2. Map Server extension . . . . . . . . . . . . . . . . . . . . 3
3. Interoperability with legacy (P)ITRs . . . . . . . . . . . . 4
4. Deployment considerations . . . . . . . . . . . . . . . . . . 4
5. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 5
6. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 5
7. Security Considerations . . . . . . . . . . . . . . . . . . . 5
8. References . . . . . . . . . . . . . . . . . . . . . . . . . 5
8.1. Normative References . . . . . . . . . . . . . . . . . . 5
8.2. Informative References . . . . . . . . . . . . . . . . . 6
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 6
1. Introduction
The Locator/ID Separation Protocol (LISP) [RFC6830] splits current IP
addresses in two different namespaces, Endpoint Identifiers (EIDs)
and Routing Locators (RLOCs). LISP uses a map-and-encap approach
that relies in two entities, the Mapping System and the Tunnel
Routers. The Tunnel Routers are deployed at LISP sites edge points
and perform encapsulation and decapsulation of LISP data packets.
The Mapping System is a distributed database that stores and
disseminates EID-RLOC bindings across different Map-Servers. LISP
Tunnel Routers keep a cache of EID-RLOC mappings pulled from the
Mapping System.
There are several ways to keep this cache updated as described in
[RFC6830]. Among them, the Solicit Map-Request (SMR) message allows
to explicitly signal (P)ITRs to let them know that some of their
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