PIM WG Xufeng. Liu
Internet-Draft Jabil
Intended status: Standards Track Zheng. Zhang
Expires: March 8, 2018 ZTE Corporation
Anish. Peter
Individual contributor
Mahesh. Sivakumar
Cisco Systems
Feng. Guo
Huawei Technologies
Pete. McAllister
Metaswitch Networks
September 4, 2017
MSDP YANG Model
draft-ietf-pim-msdp-yang-01
Abstract
This document defines a YANG data model for the configuration and
management of MSDP Protocol.
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 March 8, 2018.
Copyright Notice
Copyright (c) 2017 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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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
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described in the Simplified BSD License.
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Design of the Data Model . . . . . . . . . . . . . . . . . . 2
3. MSDP configuration . . . . . . . . . . . . . . . . . . . . . 4
4. MSDP State . . . . . . . . . . . . . . . . . . . . . . . . . 5
5. MSDP RPC . . . . . . . . . . . . . . . . . . . . . . . . . . 5
6. Notifications . . . . . . . . . . . . . . . . . . . . . . . . 5
7. MSDP YANG model . . . . . . . . . . . . . . . . . . . . . . . 5
8. Contributors . . . . . . . . . . . . . . . . . . . . . . . . 20
9. Normative References . . . . . . . . . . . . . . . . . . . . 20
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 21
1. Introduction
[RFC3618] introduces the protocol definition of MSDP. This document
defines a YANG data model that can be used to configure and manage
the MSDP protocol. The operational state data and statistics can
also be retrieved by this model.
This model is designed to be used along with other multicast YANG
models such as PIM, which are not covered in this document.
2. Design of the Data Model
This model imports and augments ietf-routing YANG model defined in
[I-D.ietf-netmod-routing-cfg]. Both configuration branch and state
branch of [I-D.ietf-netmod-routing-cfg] are augmented. The
configuration branch covers global configuration attributes and per
peer configuration attributes. The state branch includes global, per
peer, and source-active information. The container "msdp" is the top
level container in this data model. The presence of this container
is expected to enable MSDP protocol functionality.
module: ietf-msdp
augment /rt:routing/rt:control-plane-protocols:
+--rw msdp!
+--rw global
| +--rw connect-source? if:interface-ref
| +--rw default-peer! {global-default-peer}?
| | +--rw peer-addr -> ../../../peers/peer/address
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| | +--rw prefix-policy? string {global-default-peer-policy}?
| +--rw originating-rp
| | +--rw interface? if:interface-ref
| +--rw sa-filter
| | +--rw in? string
| | +--rw out? string
| +--rw sa-limit? uint32 {global-sa-limit}?
| +--rw ttl-threshold? uint8
+--rw peers
| +--rw peer* [address]
| +--rw address inet:ipv4-address
| +--rw authentication
| | +--rw (authentication-type)?
| | +--:(key-chain) {peer-key-chain}?
| | | +--rw key-chain? key-chain:key-chain-ref
| | +--:(password) {peer-key-chain}?
| | +--rw key? string
| | +--rw crypto-algorithm? identityref
| +--rw enable? boolean {peer-admin-enable}?
| +--rw connect-source? if:interface-ref
| +--rw description? string {peer-description}?
| +--rw mesh-group? string
| +--rw peer-as? string {peer-as}?
| +--rw sa-filter
| | +--rw in? string
| | +--rw out? string
| +--rw sa-limit? uint32 {peer-sa-limit}?
| +--rw timer
| | +--rw connect-retry-interval? uint16 {peer-timer-connect-retry}?
| | +--rw holdtime-interval? uint16 {peer-timer-holdtime}?
| | +--rw keepalive-interval? uint16 {peer-timer-keepalive}?
| +--rw ttl-threshold? uint8
| +--ro session-state? enumeration
| +--ro elapsed-time? uint32
| +--ro connect-retry-expire? uint32
| +--ro hold-expire? uint32
| +--ro is-default-peer? boolean
| +--ro keepalive-expire? uint32
| +--ro reset-count? uint32
| +--ro statistics
| +--ro discontinuity-time? yang:date-and-time
| +--ro error
| | +--ro rpf-failure? uint32
| +--ro queue
| | +--ro size-in? uint32
| | +--ro size-out? uint32
| +--ro received
| | +--ro keepalive? yang:counter64
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| | +--ro notification? yang:counter64
| | +--ro sa-message? yang:counter64
| | +--ro sa-response? yang:counter64
| | +--ro sa-request? yang:counter64
| | +--ro total? yang:counter64
| +--ro sent
| +--ro keepalive? yang:counter64
| +--ro notification? yang:counter64
| +--ro sa-message? yang:counter64
| +--ro sa-response? yang:counter64
| +--ro sa-request? yang:counter64
| +--ro total? yang:counter64
+--ro sa-cache
+--ro entry* [group source-addr]
+--ro group inet:ipv4-address
+--ro source-addr union
+--ro origin-rp* [rp-address]
| +--ro rp-address inet:ip-address
| +--ro is-local-rp? boolean
| +--ro sa-adv-expire? uint32
+--ro up-time? uint32
+--ro expire? uint32
+--ro holddown-interval? uint32
+--ro peer-learned-from? inet:ipv4-address
+--ro rpf-peer? inet:ipv4-address
rpcs:
+---x msdp-clear-peer
| +---w input
| +---w peer-address? inet:ipv4-address
+---x msdp-clear-sa-cache {rpc-clear-sa-cache}?
+---w input
+---w entry!
| +---w group inet:ipv4-address
| +---w source-addr? union
+---w peer-address? inet:ipv4-address
+---w peer-as? string
3. MSDP configuration
MSDP configurations require peer configurations. Several peers may
be configured in a mesh-group. The Source-Active information may be
filtered by peers.
The configuration modeling branch is composed of MSDP global and peer
configurations. The two parts are the most important parts of MSDP.
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Besides the fundamental features of MSDP protocol, several optional
features are included in the model. These features help the control
of MSDP protocol. The peer features and SA features make the
deployment and control easier. The connection parameters can be used
to control the TCP connection because MSDP protocol is based on TCP.
The authentication features make the protocol more secure. The
filter features allow operators to avoid the irrelevant information.
4. MSDP State
MSDP states are composed of MSDP global state, MSDP peer state,
statistics information and Sa-cache information. The statistics
information and Sa-cache information helps the operator to retrieve
the protocol condition.
5. MSDP RPC
The part is used to define some useful and ordinary operations of
protocol management.
6. Notifications
This part will be updated in later version.
7. MSDP YANG model
<CODE BEGINS> file "ietf-msdp@2017-08-30.yang"
module ietf-msdp {
namespace "urn:ietf:params:xml:ns:yang:ietf-msdp";
prefix msdp;
import ietf-yang-types {
prefix "yang";
}
import ietf-inet-types {
prefix "inet";
}
import ietf-routing {
prefix "rt";
}
import ietf-interfaces {
prefix "if";
}
import ietf-ip {
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prefix "ip";
}
import ietf-key-chain {
prefix "key-chain";
}
organization
"IETF PIM( Protocols for IP Multicast ) Working Group";
contact
"WG Web: <http://tools.ietf.org/wg/pim/>
WG List: <mailto:pim@ietf.org>
WG Chair: Stig Venaas
<mailto:stig@venaas.com>
WG Chair: Mike McBride
<mailto:mmcbride7@gmail.com>
Editor: Xufeng Liu
<mailto:Xufeng_Liu@jabil.com>
Editor: Zheng Zhang
<mailto:zhang.zheng@zte.com.cn>
Editor: Anish Peter
<mailto:anish.ietf@gmail.com>
Editor: Mahesh Sivakumar
<mailto:masivaku@cisco.com>
Editor: Feng Guo
<mailto:guofeng@huawei.com>";
description
"The module defines the YANG definitions for MSDP.";
revision 2017-08-30 {
description
"Initial revision.";
reference
"RFC XXXX: A YANG Data Model for MSDP.
RFC 3618: Multicast Source Discovery Protocol (MSDP).
RFC 4624: Multicast Source Discovery Protocol (MSDP) MIB";
}
/*
* Features
*/
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feature global-connect-source {
description
"Support configuration of global connect-source.";
}
feature global-default-peer {
description
"Support configuration of global default peer.";
}
feature global-default-peer-policy {
description
"Support configuration of global default peer.";
}
feature global-sa-filter {
description
"Support configuration of global SA filter.";
}
feature global-sa-limit {
description
"Support configuration of global limit on SA entries.";
}
feature global-ttl-threshold {
description
"Support configuration of global ttl-threshold.";
}
feature rpc-clear-sa-cache {
description
"Support the rpc to clear SA cache.";
}
feature peer-admin-enable {
description
"Support configuration of peer administrative enabling.";
}
feature peer-as {
description
"Support configuration of peer AS number.";
}
feature peer-connect-source {
description
"Support configuration of global connect-source.";
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}
feature peer-description {
description
"Support configuration of peer description.";
}
feature peer-key-chain {
description
"Support configuration of peer key-chain.";
}
feature peer-password {
description
"Support configuration of peer key-chain.";
}
feature peer-sa-limit {
description
"Support configuration of per peer limit on SA entries.";
}
feature peer-timer-connect-retry {
description
"Support configuration of peer timer for connect-retry.";
}
feature peer-timer-keepalive {
description
"Support configuration of peer timer for keepalive.";
}
feature peer-timer-holdtime {
description
"Support configuration of peer timer for holdtime.";
}
/*
* Groupings
*/
grouping authentication-container {
description
"A container defining authentication attributes.";
container authentication {
description
"A container defining authentication attributes.";
choice authentication-type {
case key-chain {
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if-feature peer-key-chain;
leaf key-chain {
type key-chain:key-chain-ref;
description
"Reference to a key-chain.";
}
}
case password {
if-feature peer-key-chain;
leaf key {
type string;
description
"This leaf describes the authentication key.";
}
leaf crypto-algorithm {
type identityref {
base key-chain:crypto-algorithm;
}
description
"Cryptographic algorithm associated with key.";
}
}
description
"Choice of authentication.";
}
}
} // authentication-container
grouping connect-source {
description "Attribute to configure connect-source.";
leaf connect-source {
type if:interface-ref;
must "/if:interfaces/if:interface[if:name = current()]/"
+ "ip:ipv4" {
description
"The interface must have IPv4 enabled.";
}
description
"The interface is to be the source for the TCP connection.
It is a reference to an entry in the global interface
list.";
}
} // connect-source
grouping global-config-attributes {
description "Global MSDP configuration.";
uses connect-source {
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if-feature global-connect-source;
}
container default-peer {
if-feature global-default-peer;
presence "Present if the default peer is configured.";
description
"The default peer accepts all MSDP SA messages.
A default peer is needed in topologies where MSDP peers do
not coexist with BGP peers. The reverse path forwarding
(RPF) check on SA messages can fail, and no SA messages are
accepted. In these cases, you can configure the peer as a
default peer and bypass RPF checks.";
leaf peer-addr {
type leafref {
path "../../../peers/peer/address";
}
mandatory true;
description
"Reference to a peer that is in the peer list.";
}
leaf prefix-policy {
if-feature global-default-peer-policy;
type string;
description
"If specified, only those SA entries whose RP is permitted
in the prefix list are allowed;
if not specified, all SA messages from the default peer
are accepted.";
}
} // default-peer
container originating-rp {
description
"The container of originating-rp.";
leaf interface {
type if:interface-ref;
must "/if:interfaces/if:interface[if:name = current()]/"
+ "ip:ipv4" {
description
"The interface must have IPv4 enabled.";
}
description
"Reference to an entry in the global interface
list.
IP address of the interface is used in the RP field of an
SA message entry. When Anycast RPs are used, all RPs use
the same IP address. This parameter can be used to define
a unique IP address for the RP of each MSDP peer.
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By default, the software uses the RP address of the
local system.";
}
} // originating-rp
uses sa-filter-container {
if-feature global-sa-filter;
}
leaf sa-limit {
if-feature global-sa-limit;
type uint32;
description
"A limit on the number of SA entries accepted. By default,
there is no limit.";
}
uses ttl-threshold {
if-feature global-ttl-threshold;
}
} // global-config-attributes
grouping global-state-attributes {
description "Global MSDP state attributes.";
} // global-state-attributes
grouping peer-config-attributes {
description "Per peer configuration for MSDP.";
uses authentication-container;
leaf enable {
if-feature peer-admin-enable;
type boolean;
description
"true to enable peer;
false to disable peer.";
}
uses connect-source {
if-feature peer-connect-source;
}
leaf description {
if-feature peer-description;
type string;
description
"The peer description.";
}
leaf mesh-group {
type string;
description
"Configure this peer to be a member of a mesh group";
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}
leaf peer-as {
if-feature peer-as;
type string;
description
"Peer's autonomous system number (ASN).";
}
uses sa-filter-container;
leaf sa-limit {
if-feature peer-sa-limit;
type uint32;
description
"A limit on the number of SA entries accepted from this peer.
By default, there is no limit.";
}
container timer {
description "Timer attributes.";
leaf connect-retry-interval {
if-feature peer-timer-connect-retry;
type uint16;
units seconds;
default 30;
description "SHOULD be set to 30 seconds. ";
}
leaf holdtime-interval {
if-feature peer-timer-holdtime;
type uint16;
units seconds;
must ". > 3";
default 75;
description "The SA-Hold-Down-Period of this msdp peer.";
}
leaf keepalive-interval {
if-feature peer-timer-keepalive;
type uint16;
units seconds;
must ". > 1 and . < ../holdtime-interval";
default 60;
description "The keepalive timer of this msdp peer.";
}
} // timer
uses ttl-threshold;
} // peer-config-attributes
grouping peer-state-attributes {
description "Per peer state attributes for MSDP.";
leaf session-state {
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type enumeration {
enum disabled {
description "Disabled.";
}
enum inactive {
description "Inactive.";
}
enum listen {
description "Listen.";
}
enum connecting {
description "Connecting.";
}
enum established {
description "Established.";
}
}
config false;
description
"Peer session state.";
reference
"RFC3618: Multicast Source Discovery Protocol (MSDP).";
}
leaf elapsed-time {
type uint32;
units seconds;
config false;
description "Elapsed time for being in a state.";
}
leaf connect-retry-expire {
type uint32;
units seconds;
config false;
description "Connect retry expire time of peer connection.";
}
leaf hold-expire {
type uint32;
units seconds;
config false;
description "Hold expire time of peer connection.";
}
leaf is-default-peer {
type boolean;
config false;
description "If this peer is default peer.";
}
leaf keepalive-expire {
type uint32;
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units seconds;
config false;
description "Keepalive expire time of this peer.";
}
leaf reset-count {
type uint32;
config false;
description "The reset count of this peer.";
}
uses statistics-container;
} // peer-config-attributes
grouping sa-cache-state-attributes {
description "SA cache state attributes for MSDP.";
leaf up-time {
type uint32;
units seconds;
description "The up time of this sa cache.";
}
leaf expire {
type uint32;
units seconds;
description "If this cache has expired.";
}
leaf holddown-interval {
type uint32;
units seconds;
description "Holddown timer value for SA forwarding.";
}
leaf peer-learned-from {
type inet:ipv4-address;
description
"The address of peer that we learned this SA from .";
}
leaf rpf-peer {
type inet:ipv4-address;
description "RPF peer.";
}
} // sa-cache-state-attributes
grouping sa-filter-container {
description "A container defining SA filters.";
container sa-filter {
description
"Specifies an access control list (ACL) to filter source
active (SA) messages coming in to or going out of the
peer.";
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leaf in {
type string;
description
"Filters incoming SA messages only.";
}
leaf out {
type string;
description
"Filters outgoing SA messages only.";
}
} // sa-filter
} // sa-filter-container
grouping ttl-threshold {
description "Attribute to configure TTL threshold.";
leaf ttl-threshold {
type uint8 {
range 1..255;
}
description
"Maximum number of hops data packets can traverse before
being dropped.";
}
} // sa-ttl-threshold
grouping statistics-container {
description
"A container defining statistics attributes.";
container statistics {
config false;
description "Container of statistic objects.";
leaf discontinuity-time {
type yang:date-and-time;
description
"The time on the most recent occasion at which any one
or more of the statistic counters suffered a
discontinuity. If no such discontinuities have occurred
since the last re-initialization of the local
management subsystem, then this node contains the time
the local management subsystem re-initialized itself.";
}
container error {
description "Error counters.";
uses statistics-error;
}
container queue {
description "Queue counters.";
uses statistics-queue;
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}
container received {
description "Received message counters.";
uses statistics-sent-received;
}
container sent {
description "Sent message counters.";
uses statistics-sent-received;
}
}
} // statistics-container
grouping statistics-error {
description
"A grouping defining error statistics
attributes.";
leaf rpf-failure {
type uint32;
description "Number of RPF failures.";
}
} // statistics-error
grouping statistics-queue {
description
"A grouping defining queue statistics
attributes.";
leaf size-in {
type uint32;
description
"The size of the input queue.";
}
leaf size-out {
type uint32;
description
"The size of the output queue.";
}
} // statistics-queue
grouping statistics-sent-received {
description
"A grouping defining sent and received statistics
attributes.";
leaf keepalive {
type yang:counter64;
description
"The number of keepalive messages.";
}
leaf notification {
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type yang:counter64;
description
"The number of notification messages.";
}
leaf sa-message {
type yang:counter64;
description
"The number of SA messages.";
}
leaf sa-response {
type yang:counter64;
description
"The number of SA response messages.";
}
leaf sa-request {
type yang:counter64;
description
"The number of SA request messages.";
}
leaf total {
type yang:counter64;
description
"The number of total messages.";
}
} // statistics-sent-received
/*
* Data nodes
*/
augment "/rt:routing/rt:control-plane-protocols" {
description
"MSDP augmentation to routing instance.";
container msdp {
presence "Container for MSDP protocol.";
description
"MSDP configuration data.";
container global {
description
"Global attributes.";
uses global-config-attributes;
uses global-state-attributes;
}
container peers {
description
"Containing a list of peers.";
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list peer {
key "address";
description
"List of MSDP peers.";
leaf address {
type inet:ipv4-address;
description
"The address of peer";
}
uses peer-config-attributes;
uses peer-state-attributes;
} // peer
} // peers
container sa-cache {
config false;
description
"The sa cache information.";
list entry {
key "group source-addr";
description "A list of sa cache entries.";
leaf group {
type inet:ipv4-address;
description "The group address of this sa cache.";
}
leaf source-addr {
type union {
type enumeration {
enum '*' {
description "Any source address.";
}
}
type inet:ipv4-address;
}
description "Source IPv4 address.";
}
list origin-rp {
key "rp-address";
description
"Origin RP address.";
leaf rp-address {
type inet:ip-address;
description "The RP address.";
}
leaf is-local-rp {
type boolean;
description "The RP is local.";
}
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leaf sa-adv-expire {
type uint32;
units seconds;
description
"Periodic SA advertisement timer exipiring time on
a local RP.";
}
}
uses sa-cache-state-attributes;
} // entry
} // sa-cache
} // msdp
} // augment
/*
* RPCs
*/
rpc msdp-clear-peer {
description
"Clears the session to the peer.";
input {
leaf peer-address {
type inet:ipv4-address;
description
"Address of peer to be cleared. If this is not provided
then all peers are cleared.";
}
}
}
rpc msdp-clear-sa-cache {
if-feature rpc-clear-sa-cache;
description
"Clears MSDP source active (SA) cache entries.";
input {
container entry {
presence "Present if a particular is cleared.";
description
"The SA cache (S,G) or (*,G) entry to be cleared. If this
is not provided, all entries are cleared.";
leaf group {
type inet:ipv4-address;
mandatory true;
description "The group address";
}
leaf source-addr {
type union {
type enumeration {
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enum '*' {
description "Any source address.";
}
}
type inet:ipv4-address;
}
description "Source IPv4 address.";
}
} // s-g
leaf peer-address {
type inet:ipv4-address;
description
"Peer IP address from which MSDP SA cache entries have been
learned. If this is not provided, entries learned from all
peers are cleared.";
}
leaf peer-as {
type string;
description
"ASN from which MSDP SA cache entries have been learned.
If this is not provided, entries learned from all AS's
are cleared.";
}
}
}
}
<CODE ENDS>
8. Contributors
The authors would like to thank Yisong Liu (liuyisong@huawei.com),
Benchong Xu (xu.benchong@zte.com.cn), Tanmoy Kundu
(tanmoy.kundu@alcatel-lucent.com) for their valuable contributions.
9. Normative References
[I-D.ietf-netmod-routing-cfg]
Lhotka, L. and A. Lindem, "A YANG Data Model for Routing
Management", draft-ietf-netmod-routing-cfg-25 (work in
progress), November 2016.
[RFC3618] Fenner, B., Ed. and D. Meyer, Ed., "Multicast Source
Discovery Protocol (MSDP)", RFC 3618,
DOI 10.17487/RFC3618, October 2003,
<https://www.rfc-editor.org/info/rfc3618>.
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Internet-Draft MSDP YANG Model September 2017
[RFC4624] Fenner, B. and D. Thaler, "Multicast Source Discovery
Protocol (MSDP) MIB", RFC 4624, DOI 10.17487/RFC4624,
October 2006, <https://www.rfc-editor.org/info/rfc4624>.
[RFC6087] Bierman, A., "Guidelines for Authors and Reviewers of YANG
Data Model Documents", RFC 6087, DOI 10.17487/RFC6087,
January 2011, <https://www.rfc-editor.org/info/rfc6087>.
Authors' Addresses
Xufeng Liu
Jabil
8281 Greensboro Drive, Suite 200
McLean VA 22102
USA
Email: Xufeng_Liu@jabil.com
Zheng Zhang
ZTE Corporation
No. 50 Software Ave, Yuhuatai Distinct
Nanjing
China
Email: zhang.zheng@zte.com.cn
Anish Peter
Individual contributor
Email: anish.ietf@gmail.com
Mahesh Sivakumar
Cisco Systems
510 McCarthy Boulevard
Milpitas, California
USA
Email: masivaku@cisco.com
Liu, et al. Expires March 8, 2018 [Page 21]
Internet-Draft MSDP YANG Model September 2017
Feng Guo
Huawei Technologies
Huawei Bld., No.156 Beiqing Rd.
Beijing 100095
China
Email: guofeng@huawei.com
Pete McAllister
Metaswitch Networks
100 Church Street
Enfield EN2 6BQ
UK
Email: pete.mcallister@metaswitch.com
Liu, et al. Expires March 8, 2018 [Page 22]
