A YANG Data Model for MPLS Static LSPs
draft-ietf-mpls-static-yang-05
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2018-02-15
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draft-saad-mpls-static-yang
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MPLS Working Group T. Saad
Internet-Draft K. Raza
Intended status: Standards Track R. Gandhi
Expires: August 19, 2018 Cisco Systems, Inc.
X. Liu
Jabil
V. Beeram
Juniper Networks
February 15, 2018
A YANG Data Model for MPLS Static LSPs
draft-ietf-mpls-static-yang-05
Abstract
This document contains the specification for the MPLS Static Label
Switched Paths (LSPs) YANG model. The model allows for the
provisioning of static LSP(s) on LER(s) and LSR(s) devices along a
LSP path without the dependency on any signaling protocol. The MPLS
Static LSP model augments the MPLS base YANG model with specific data
to configure and manage MPLS Static LSP(s).
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 August 19, 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
Saad, et al. Expires August 19, 2018 [Page 1]
Internet-Draft MPLS Static LSPs YANG Data Model February 2018
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
1.1. Terminology . . . . . . . . . . . . . . . . . . . . . . . 3
1.2. Model Organization . . . . . . . . . . . . . . . . . . . 3
1.3. MPLS Static LSPs Model Tree Diagram . . . . . . . . . . . 4
1.4. MPLS Static LSP YANG Module(s) . . . . . . . . . . . . . 6
2. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 17
3. Security Considerations . . . . . . . . . . . . . . . . . . . 18
4. Normative References . . . . . . . . . . . . . . . . . . . . 18
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 19
1. Introduction
This document describes a YANG data model for configuring and
managing the Static LSPs feature. The model allows the configuration
of LER and LSR devices with the necessary MPLS cross-connects or
bindings to realize an end-to-end LSP service.
A static LSP is established by manually specifying incoming and
outgoing MPLS label(s) and necessary forwarding information on each
of the traversed Label Edge Router (LER) and Label Switched Router
(LSR) devices (ingress, transit, or egress nodes) of the forwarding
path.
For example, on an ingress LER device, the model is used to associate
a specific Forwarding Equivalence Class (FEC) of packets- e.g.
matching a specific IP prefix in a Virtual Routing or Forwarding
(VRF) instance- to an MPLS outgoing label imposition, next-hop(s) and
respective outgoing interface(s) to forward the packet. On an LSR
device, the model is used to create a binding that swaps the incoming
label with an outgoing label and forwards the packet on one or
multiple egress path(s). On an egress LER, it is used to create a
binding that decapsulates the incoming MPLS label and performs
forwarding based on the inner MPLS label (if present) or IP
forwarding in the packet.
The MPLS Static LSP YANG model is defined in module "ietf-mpls-
static" and augments the MPLS Base YANG model defined in module
"ietf-mpls" in [I-D.saad-mpls-static-yang].
Saad, et al. Expires August 19, 2018 [Page 2]
Internet-Draft MPLS Static LSPs YANG Data Model February 2018
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