Network Working group H. Bidgoli, Ed.
Internet Draft Nokia
Intended status: Standard Track D. Voyer
Bell Canada
Tanmoy Kundu
J. Kotalwar
Nokia
R. Parekh
Cisco System, Inc.
T. Saad
Juniper Networks
Expires: January 7, 2020 July 6, 2019
YANG Data Model for p2mp sr policy
draft-hb-spring-sr-p2mp-policy-yang-00
Abstract
SR P2MP policies are set of policies that enable architecture for
P2MP service delivery.
This document defines a YANG data model for SR P2MP Policy
Configuration and operation.
Status of this Memo
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This Internet-Draft will expire on October 8, 2017.
Copyright Notice
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Conventions used in this document . . . . . . . . . . . . . . . 2
3. Design of the Data Model . . . . . . . . . . . . . . . . . . . 3
4. Configuration . . . . . . . . . . . . . . . . . . . . . . . . . 4
5. Control plane configuration . . . . . . . . . . . . . . . . . . 4
6. States . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
7. Yang Data Model . . . . . . . . . . . . . . . . . . . . . . . . 4
6. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 12
7. Security Considerations . . . . . . . . . . . . . . . . . . . . 12
8. References . . . . . . . . . . . . . . . . . . . . . . . . . . 12
8.1. Normative References . . . . . . . . . . . . . . . . . . . 12
8.2. Informative References . . . . . . . . . . . . . . . . . . 12
7. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . 12
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 12
1. Introduction
This document defines a YANG data model for P2MP SR Policy
configuration and operation.
2. Conventions used in this document
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 RFC 2119 [RFC2119].
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3. Design of the Data Model
submodule: router-p2mp-segment (belongs-to root)
+--rw p2mp-segment!
+--rw admin-state? boolean
+--rw p2mp-policy* [p2mp-policy-name]
| +--rw p2mp-policy-name string
| +--rw root-address? inet:ipv4-address
| +--rw tree-id? uint32
| +--rw admin-state? boolean
| +--ro oper-state? boolean
| +--rw leaf-list* [leaf-address]
| +--rw leaf-address inet:ipv4-address
| +--rw admin-state? boolean
+--rw replication-policy* [replication-policy-name]
+--rw replication-policy-name string
+--rw root-address? inet:ipv4-address
+--rw tree-id? uint32
+--rw node-address? inet:ipv4-address
+--rw admin-state? boolean
+--ro oper-state? boolean
+--rw candidate-path* [candidate-path-name]
+--rw candidate-path-name string
+--rw origin? enumeration
+--rw originator-asn? uint32
+--rw originator-node-address? inet:ipv4-address
+--rw descriminator? uint32
+--rw admin-state? boolean
+--ro oper-state? boolean
+--rw plsp-id? uint32
+--rw preference? uint32
+--rw incoming-replication-sid? uint32
+--rw operation? enumeration
+--rw next-hop-id* [next-hop-id]
+--rw next-hop-id uint32
+--rw next-hop-address? inet:ipv4-address
+--rw next-hop-interface-name? if:interface-ref
+--rw protect-nexthop-id? uint32
+--rw weight? uint32
+--rw (label)?
+--:(outgoing-replication-sid)
| +--rw out-replication-sid* [index]
| +--rw index uint32
+--:(outgoing-sr-policy-sid-list)
| +--rw sr-policy-sid-list* [index]
| +--rw index uint32
+--:(outgoin-sr-policy)
+--rw sr-policy? string
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4. Configuration
This Module augments the "/rt:routing:" with a treeSID container.
This container defines all the configuration parameter related to
treeSID and P2MP SR Policy for this particular routing. The P2MP SR
policy contains replication policy which in order contain candidate-
path and the next-hop-groups for each OIF in the replication Policy.
IT should be noted that two disjoint replication policies can be
connected via a SR Policy as per draft-ietf-spring-segment-routing-
policy.
5. Control plane configuration
6. States
7. Yang Data Model
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<CODE BEGINS> file "ietf-p2mp-policy@2019-07-04.yang"
module ietf-tree-sid {
yang-version 1.1;
namespace "urn:ietf:params:xml:ns:yang:p2mp-policy-segment";
// replace with IANA namespace when assigned
prefix tree-sid;
import ietf-inet-types {
prefix "inet";
}
import ietf-yang-types {
prefix "yang";
}
import ietf-routing-types {
prefix "rt-types";
}
import ietf-routing {
prefix "rt";
}
import ietf-interfaces {
prefix "if";
}
import ietf-ip {
prefix ip;
}
organization
"IETF SPRING Working Group";
contact
"WG Web: <http://tools.ietf.org/wg/spring/>
WG List: <mailto:spring@ietf.org>
WG Chair: Bruno Decraene
<mailto:bruno.decraene@orange.com>
WG Chair: Rob Shakir
<mailto:robjs@google.com>
Editor: Hooman Bidgoli
<mailto:hooman.bidgoli@nokia.com>
Editor: Tanmoy Kundu
<mailto:tanmoy.kundu@nokia.com>
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Editor: Daniel Voyer
<mainlto: daniel.voyer@bell.com>
description
"The module defines a collection of YANG definition for
p2mp policy module.";
revision 2019-07-04 {
description
"First draft.";
reference
"RFC XXXX: A YANG Data Model for TREE-SID";
}
submodule router-p2mp-segment {
belongs-to root { prefix "root"; }
import ietf-inet-types { prefix "inet"; }
import ietf-interfaces { prefix "if"; }
container p2mp-segment {
presence "Configure Tree SID parameters.";
leaf admin-state {
type boolean;
default false;
description
"Administratively enable/disable Tree SID.";
}
list p2mp-policy {
key "p2mp-policy-name";
uses p2mp-policy-key;
leaf root-address {
type inet:ipv4-address;
description
"Root address of the tree.";
}
leaf tree-id {
type uint32;
description
"Tree ID uniquely indentifies a tunnel in the root,
this also represent a spefic constraint. Also known as
color and/or p2mp-id";
}
leaf admin-state {
type boolean;
default false;
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description
"Administratively enable/disable Tree SID p2mp policy.";
}
leaf oper-state {
type boolean;
default false;
config false;
description
"Tree SID p2mp policy operational state based on users.";
}
list leaf-list {
key "leaf-address";
uses leaf-list-key;
leaf admin-state {
type boolean;
default false;
description
"Administratively enable/disable Tree SID p2mp policy.";
}
}
}
list replication-policy {
key "replication-policy-name";
uses replication-policy-key;
leaf root-address {
type inet:ipv4-address;
description
"Root address of the tree.";
}
leaf tree-id {
type uint32;
description
"Tree ID uniquely indentifies a tunnel in the root,
this also represent a spefic constraint. Also known as
color and/or p2mp-id";
}
leaf node-address {
type inet:ipv4-address;
description
"Node address for which this replication policy is used.";
}
leaf admin-state {
type boolean;
default false;
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description
"Administratively enable/disable Tree SID replication policy.";
}
leaf oper-state {
type boolean;
default false;
config false;
description
"Tree SID replication policy operational state based on users.";
}
list candidate-path {
description
"Candidate path is Tree SID or SID list representing a
unique path from root to a specific endpoint using the
tree-id constraint.";
key "candidate-path-name";
uses candidate-path-key;
leaf admin-state {
type boolean;
default false;
description
"Administratively enable/disable Tree SID candidate path.";
}
leaf oper-state {
type boolean;
default false;
config false;
description
"candidate-path operational state based on ilm programming.";
}
leaf plsp-id {
type uint32;
default 0;
description
"PLSP-ID is an unique identifier assigned by controler and
remain unchanged througout the life of a LSP(candidate path).";
}
leaf preference {
type uint32;
default 100;
description
"Preference determines the best preferred candidate-path among
list of candiate path towards a leaf. Higher preference is
choosen.";
}
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leaf incoming-replication-sid{
type uint32;
default 0;
description
"The incoming label for transit and leaf routers, root it
is 0";
}
leaf operation {
type enumeration {
enum push { value 0; }
enum pop { value 1; }
enum swap { value 2; }
}
default push;
description
"Label operation";
}
list next-hop-id {
description
"Identifies each nexthop in a candidate path.";
key "next-hop-id";
uses next-hop-id-key;
leaf next-hop-address {
type inet:ipv4-address;
default 0.0.0.0;
description
"Nexthop address of the desitnation.";
}
leaf next-hop-interface-name {
type if:interface-ref;
description
"Next hop out going interface.";
}
leaf protect-nexthop-id {
type uint32;
description
"Nexthop protection id.";
}
leaf weight {
type uint32;
description
"weight for weighted load balancing";
}
choice label {
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list outgoing-replication-sid {
key index;
uses sid-list-key;
description
"Outgoing replication label for this nexthop.";
}
list outgoing-sr-policy-sid-list {
key index;
uses sr-policy-sid-key;
description
"Outgoing sr-policy sid for this nexthop.";
}
leaf outgoing-sr-policy {
type string;
description
"SR policy name to be referrenced";
}
}
}
}
}
}
// -------------------------- GROUPINGS ---------------------------
grouping p2mp-policy-key {
leaf p2mp-policy-name {
type string;
description
"P2MP policy name to be referrenced by mvpn pmsi.";
}
}
grouping replication-policy-key {
leaf replication-policy-name {
type string;
description
"Replication policy name to be referrenced by mvpn pmsi.";
}
}
grouping leaf-list-key {
leaf leaf-address{
type inet:ipv4-address;
description
"leaf address of the this p2mp-tree";
}
}
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grouping candidate-path-key {
leaf candidate-path-name {
type string;
description
"A candidate path name equivalent to a LSP.";
}
leaf origin {
type enumeration {
enum pcep { value 10; }
enum bgp-sr-policy { value 20; }
enum configuration { value 30; }
}
description
"Protocol-Origin of a candidate path is an 8-bit value
which identifies the component or protocol that originates
or signals the candidate path.";
}
leaf originator-asn {
type uint32;
description
"represented as a 4 byte number";
}
leaf originator-node-address {
type inet:ipv4-address;
description
"128 bit value, IPv4 address are encoded in lower 32 bit.";
}
leaf descriminator {
type uint32;
description
"The Discriminator is a 32 bit value associated with a candidate
path that uniquely identifies it within the context of an SR
Policy from a specific Protocol-Origin";
}
}
grouping next-hop-id-key {
leaf next-hop-id {
type uint32;
description
"Nexthop group index";
}
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}
grouping sid-list-key {
leaf index {
type uint32 {
range 1..2;
}
}
}
grouping sr-policy-sid-key {
leaf index {
type uint32 {
range 1..12;
}
description
"Index for push-label.";
}
}
}
<CODE ENDS>
6. IANA Considerations
This document contains no actions for IANA.
7. Security Considerations
TBD
8. References
8.1. Normative References
8.2. Informative References
[sr-p2mp-policy] D. Yoyer, Ed., C. Hassen, K. Gillis, C. Filsfils, R.
Parekh, H.Bidgoli, "SR Replication Policy for P2MP Service Delivery",
draft-voyer-spring-sr-p2mp-policy-01, April 2019.
7. Acknowledgments
Authors' Addresses
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Hooman Bidgoli
Nokia
600 March Rd.
Ottawa, Ontario K2K 2E6
Canada
Email: hooman.bidgoli@nokia.com
Daniel Voyer
Bell Canada
Montreal
CA
Email: daniel.voyer@bell.ca
Tanmoy kundu
nokia
Montain View
US
Email: tanmoy.kundu@nokia.com
Jayant Kotalwar
nokia
Montain View
US
Email: jayant.kotalwar@nokia.com
Rishabh Parekh
Cisco Systems, Inc.
San Jose
US
Email: riparekh@cisco.com
Tarek Saad
Juniper Networks
Email: tssad@juniper.net
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