Internet DRAFT - draft-chen-mpls-ldp-yang-cfg
draft-chen-mpls-ldp-yang-cfg
Network Working Group X. Chen
Internet-Draft Z. Li
Intended status: Standards Track Huawei Technologies
Expires: February 16, 2015 August 15, 2014
Yang Model for MPLS LDP
draft-chen-mpls-ldp-yang-cfg-00
Abstract
This document defines a YANG data model that can be used to configure
and manage MPLS LDP.
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 RFC 2119 [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
working documents as Internet-Drafts. The list of current Internet-
Drafts is at http://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 February 16, 2015.
Copyright Notice
Copyright (c) 2014 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
(http://trustee.ietf.org/license-info) in effect on the date of
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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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
2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 2
3. Design of Data Model . . . . . . . . . . . . . . . . . . . . 3
3.1. Overview . . . . . . . . . . . . . . . . . . . . . . . . 3
3.2. LDP Global Configuration . . . . . . . . . . . . . . . . 4
3.3. LDP Per-instance Configuration . . . . . . . . . . . . . 4
3.3.1. Per-instance Parameters . . . . . . . . . . . . . . . 4
3.3.2. Per-interface Configuration of LDP Instance . . . . . 4
3.3.3. Remote Peer Configuration of LDP Instance . . . . . . 5
3.3.4. Peer Configuration of LDP Instance . . . . . . . . . 5
3.3.5. GTSM Configuration of LDP Instance . . . . . . . . . 5
3.3.6. mLDP P2MP Tunnel Configuration of LDP Instance . . . 5
3.3.7. mLDP P2MP Leaf LSP Configuration of LDP Instance . . 6
4. LDP Yang Module . . . . . . . . . . . . . . . . . . . . . . . 6
5. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 14
6. Security Considerations . . . . . . . . . . . . . . . . . . . 14
7. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 14
8. Normative References . . . . . . . . . . . . . . . . . . . . 14
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 15
1. Introduction
YANG [RFC6020] is a data definition language that was introduced to
define the contents of a conceptual data store that allows networked
devices to be managed using NETCONF[RFC6241]. YANG is proving
relevant beyond its initial confines, as bindings to other
interfaces(e.g. ReST) and encoding other than XML (e.g. JSON) are
being defined. Furthermore, YANG data models can be used as the
basis of implementation for other interface, such as CLI and
Programmatic APIs.
This document defines a YANG data model that can be used to configure
and manage MPLS LDP. It includes the core LDP[RFC5036] and
mLDP[RFC6388]. In addition, features described in different separate
MPLS LDP RFC are also supported.
2. Terminology
LDP: Label Distribution Protocol
mLDP: Multipoint extensions for LDP
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GR: Graceful Restart
GTSM: Generalized TTL Security Mechanism
3. Design of Data Model
3.1. Overview
The LDP Yang module is divided into two main containers :
o ldpGlobalPara : that contains global writable configuration
objects.
o ldpInstances : that contains per-instance writable configuration
objects.
The figure below describes the overall structure of the LDP Yang
module :
module: mplsldp
+--rw mplsLdp
+--rw ldpGlobalPara
| +--rw grEnable? boolean
| +--rw reconnectTime? uint32
| +--rw recoveryTime? uint32
| +--rw peerLiveTime? uint32
| +--rw backOffInitTime? uint32
| +--rw backOffMaxTime? uint32
+--rw ldpInstances
+--rw ldpInstance* [vrfName]
+--rw vrfName string
+--rw lsrid inet:ipv4-address
+--rw igpSyncDelayTime? uint32
+--rw ldpInterfaces
| ...
+--rw ldpRemotePeers
| ...
+--rw ldpPeers
| ...
+--rw ldpGtsms
| ...
+--rw mldpP2mpTunnels
| ...
+--rw mldpP2mpLeafLsps
...
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3.2. LDP Global Configuration
LDP global configuration container includes the global parameters
such as graceful restart, backoff timer, ...
3.3. LDP Per-instance Configuration
LDP per-instance configuration container includes parameters of the
public LDP instance or the LDP instance binding a specific VRF. LDP
per-instance configuration container is divided into:
o Per-instance parameters.
o Per-interface configuration of the LDP instance
o Remote peer configuration of the LDP instance
o Peer configuration of the LDP instance
o GTSM[RFC6720] configuration of the LDP instance
o mLDP P2MP tunnel configuration of the LDP instance
o mLDP P2MP Leaf LSP configuration of the LDP instance
3.3.1. Per-instance Parameters
The per-instance parameter includes the name of the VRF bound by the
LDP instance, LSR ID and timer parameters for LDP IGP
Synchronization[RFC5443].
3.3.2. Per-interface Configuration of LDP Instance
Per-interface configuration of the LDP instance includes the
interface name, hello timer parameters, keepalive timer parameters,
timer parameters for IGP LDP synchronization, transport address.
+--rw ldpInterfaces
| +--rw ldpInterface* [ifName]
| +--rw ifName ifName
| +--rw helloSendTime? uint16
| +--rw helloHoldTime? uint16
| +--rw keepaliveSendTime? uint16
| +--rw keepaliveHoldTime? uint16
| +--rw igpSyncDelayTime? uint32
| +--rw transportAddrInterface? ifName
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3.3.3. Remote Peer Configuration of LDP Instance
The remote peer configuration of the LDP instance includes the name
and the remote IP address of the remote peer, hello timer parameters,
keepalive timer parameters, timer parameters for IGP LDP
synchronization,
+--rw ldpRemotePeers
| +--rw ldpRemotePeer* [remotePeerName]
| +--rw remotePeerName string
| +--rw remoteIp? inet:ipv4-address
| +--rw helloSendTime? uint16
| +--rw helloHoldTime? uint16
| +--rw keepaliveSendTime? uint16
| +--rw keepaliveHoldTime? uint16
| +--rw igpSyncDelayTime? uint32
3.3.4. Peer Configuration of LDP Instance
The peer configuration of the LDP instance includes the peer IP
address, authentification parameters for the peer. It may also
include the policy to control the distribution of label mapping over
the peer which will be defined in the future version.
+--rw ldpPeers
| +--rw ldpPeer* [peerid]
| +--rw peerid inet:ipv4-address
| +--rw md5Password? string
3.3.5. GTSM Configuration of LDP Instance
The GTSM configuration includes the peer transport address and hop
limit.
+--rw ldpGtsms
+--rw ldpGtsm* [peerTransportAddr]
+--rw peerTransportAddr inet:ipv4-address
+--rw gtsmHops uint16
3.3.6. mLDP P2MP Tunnel Configuration of LDP Instance
In the ingress LSR, mLDP P2MP tunnel should be defined as the entity
used for multicast traffic carried by the mLDP P2MP tunnel. The mLDP
P2MP tunnel configuration includes the tunnel name, root IP address
and the P2MP LSP ID.
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+--rw mldpP2mpTunnels
| +--rw mldpP2mpTunnel* [tunnelName]
| +--rw tunnelName string
| +--rw rootIp? inet:ipv4-address
| +--rw p2mpLspId? uint32
3.3.7. mLDP P2MP Leaf LSP Configuration of LDP Instance
mLDP P2MP leaf LSP configuration includes the P2MP LSP name, root IP
address and P2MP LSP ID.
+--rw mldpP2mpLeafLsps
+--rw mldpP2mpLeafLsp* [p2mpLspName]
+--rw p2mpLspName string
+--rw rootIp? inet:ipv4-address
+--rw p2mpLspId? uint32
4. LDP Yang Module
module mplsldp {
namespace "urn:huawei:params:xml:ns:yang:mplsldp";
// replace with IANA namespace when assigned - urn:ietf:params:xml:ns:yang:1
prefix "mplsldp";
import ietf-inet-types {
prefix inet;
}
organization
"Huawei Technologies Co., Ltd.";
contact
"jescia.chenxia@huawei.com
lizhenbin@huawei.com";
description
"This YANG module defines the generic configuration
data for LDP, which is common across all of the vendor
implementations of the protocol. It is intended that the module
will be extended by vendors to define vendor-specific
LDP configuration parameters.";
revision 2014-08-16 {
description
"Initial revision.";
}
typedef ifName {
description "ifName is like ethernet1/1/1/1";
type string {
length "1..63";
}
}
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container mplsLdp {
container ldpGlobalPara {
leaf grEnable {
description
"Specifies the LDP GR capability.
Enabling or disabling of GR will cause the re-establishment of all LDP sessions.";
config "true";
type boolean;
default "false";
}
leaf reconnectTime {
description
"Specifies the value of the LDP session reconnection timer.
The value is in seconds.";
config "true";
default "300";
type uint32 {
range "3..3600";
}
}
leaf recoveryTime {
description
"Specifies the value of the LSP recovery timer (s).
The value is in seconds.";
config "true";
default "300";
type uint32 {
range "3..3600";
}
}
leaf peerLiveTime {
description
"Specifies the value of the neighbor keeplive timer (s).
The value is in seconds.";
config "true";
default "600";
type uint32 {
range "3..3600";
}
}
leaf backOffInitTime {
description
"Specifies the init value of the exponential backoff timer (s).
The value is in seconds.";
config "true";
default "15";
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type uint32 {
range "5..2147483";
}
}
leaf backOffMaxTime {
description
"Specifies the maximum value of the exponential backoff Timer(s).
The value is in seconds.";
config "true";
default "120";
type uint32 {
range "5..2147483";
}
}
}
container ldpInstances {
list ldpInstance {
key "vrfName";
max-elements "unbounded";
min-elements "0";
description "Specifies a list of LDP instances.";
leaf vrfName {
description
"Name of an LDP instance.
If the name string is empty the instance means a public instance whose name is _public_.";
config "true";
//default "_public_";
type string {
length "0..32";
}
}
leaf lsrid {
description "LSR ID of an instance.";
config "true";
mandatory "true";
type inet:ipv4-address;
}
leaf igpSyncDelayTime {
description
"Specifies the interval at which an interface waits to establish an LSP after an LDP session is set up.
The value is in seconds.";
config "true";
default "10";
type uint32 {
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range "0..65535";
}
}
container ldpInterfaces {
list ldpInterface {
key "ifName";
max-elements "unbounded";
min-elements "0";
description "Specifies an LDP interface.";
leaf ifName {
description "Interface name.";
config "true";
type ifName;
}
leaf helloSendTime {
description
"Specifies the value of the Hello packet sending timer.
The value is in seconds.";
config "true";
type uint16 {
range "1..65535";
}
}
leaf helloHoldTime {
description
"Specifies the interval value of the Hello hold timer.
The value is in seconds.";
config "true";
type uint16 {
range "3..65535";
}
}
leaf keepaliveSendTime {
description
"Specifies the value of the Keepalive packet sending timer (s).
The value is in seconds.";
config "true";
type uint16 {
range "1..65535";
}
}
leaf keepaliveHoldTime {
description
"Specifies the value of the Keepalive packet holding timer (s).
The value is in seconds.";
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config "true";
type uint16 {
range "30..65535";
}
}
leaf igpSyncDelayTime {
description
"Specifies an interval at which an interface waits to establish an LSP after an LDP session is set up.
The value is in seconds.";
config "true";
type uint32 {
range "0..65535";
}
}
leaf transportAddrInterface {
description "Configures an interface address to be used as the transport address.";
config "true";
type ifName;
}
}
}
container ldpRemotePeers {
list ldpRemotePeer {
key "remotePeerName";
max-elements "unbounded";
min-elements "0";
description "Specifies a remote LDP neighbor.";
leaf remotePeerName {
description "Specifies the name of a remote neighbor.";
config "true";
type string {
length "1..32";
}
}
leaf remoteIp {
description "Specifies the IPv4 address of a remote neighbor.";
config "true";
type inet:ipv4-address;
}
leaf helloSendTime {
description
"Specifies the value of the Hello packet sending timer.
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The value is in seconds.";
config "true";
type uint16 {
range "1..65535";
}
}
leaf helloHoldTime {
description
"Specifies the value of the Hello packet holding timer (s).
The value is in seconds.";
config "true";
type uint16 {
range "3..65535";
}
}
leaf keepaliveSendTime {
description
"Specifies the value of the Keepalive packet sending timer.
The value is in seconds.";
config "true";
type uint16 {
range "1..65535";
}
}
leaf keepaliveHoldTime {
description
"Specifies the value of the Keepalive holding timer.
The value is in seconds.";
config "true";
type uint16 {
range "30..65535";
}
}
leaf igpSyncDelayTime {
description
"Specifies an interval at which an interface waits to establish an LSP after an LDP session is set up.
The value is in seconds.";
config "true";
type uint32 {
range "0..65535";
}
}
}
}
container ldpPeers {
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list ldpPeer {
key "peerid";
max-elements "unbounded";
min-elements "0";
description "Specifies an LDP peer.";
leaf peerid {
description "Specifies an LDP peer ID.";
config "true";
type inet:ipv4-address;
}
leaf md5Password {
description "Specifies an MD5 password.";
config "true";
type string {
length "1..255";
}
}
}
}
container ldpGtsms {
list ldpGtsm {
key "peerTransportAddr";
max-elements "unbounded";
min-elements "0";
description "Specifies a GTSM security attribute.";
leaf peerTransportAddr {
description "Specifies a GTSM transport address.";
config "true";
type inet:ipv4-address;
}
leaf gtsmHops {
description "Specifies the maximum number of GTSM hops. The value is an integer ranging from 1 to 255.";
config "true";
mandatory "true";
type uint16 {
range "1..255";
}
}
}
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}
container mldpP2mpTunnels {
list mldpP2mpTunnel {
key "tunnelName";
max-elements "unbounded";
min-elements "0";
description "Specifies the mldp p2mp lsp configuration in the root node.";
leaf tunnelName {
description "Mldp p2mp tunnel name in root node which can be used by service.";
config "true";
type string {
length "1..31";
}
}
leaf rootIp {
description "Specifies the root ip address of mldp p2mp lsp.";
config "true";
type inet:ipv4-address;
}
leaf p2mpLspId {
description "Specifies the LSP ID of mldp p2mp lsp if the generic LSP identifier is a type of opaque value element.";
config "true";
type uint32 {
range "1..8192";
}
}
}
}
container mldpP2mpLeafLsps {
list mldpP2mpLeafLsp {
key "p2mpLspName";
max-elements "unbounded";
min-elements "0";
description "Specifies the mldp p2mp lsp configuration in the leaf node.";
leaf p2mpLspName {
description "The name of mldp p2mp lsp configuration in the leaf node.";
config "true";
type string {
length "1..31";
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}
}
leaf rootIp {
description "Specifies the root ip address of mldp p2mp lsp.";
config "true";
type inet:ipv4-address;
}
leaf p2mpLspId {
description "Specifies the LSP ID of mldp p2mp lsp if the generic LSP identifier is a type of opaque value element.";
config "true";
type uint32 {
range "1..8192";
}
}
}
}
}
}
}
}
5. IANA Considerations
This document makes no request of IANA.
6. Security Considerations
The data model defined does not create any security implications.
This draft does not change any underlying security issues inherent in
[I-D.ietf-netmod-routing-cfg].
7. Acknowledgements
8. Normative References
[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
Requirement Levels", BCP 14, RFC 2119, March 1997.
[RFC5036] Andersson, L., Minei, I., and B. Thomas, "LDP
Specification", RFC 5036, October 2007.
[RFC5443] Jork, M., Atlas, A., and L. Fang, "LDP IGP
Synchronization", RFC 5443, March 2009.
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[RFC6020] Bjorklund, M., "YANG - A Data Modeling Language for the
Network Configuration Protocol (NETCONF)", RFC 6020,
October 2010.
[RFC6241] Enns, R., Bjorklund, M., Schoenwaelder, J., and A.
Bierman, "Network Configuration Protocol (NETCONF)", RFC
6241, June 2011.
[RFC6388] Wijnands, IJ., Minei, I., Kompella, K., and B. Thomas,
"Label Distribution Protocol Extensions for Point-to-
Multipoint and Multipoint-to-Multipoint Label Switched
Paths", RFC 6388, November 2011.
[RFC6720] Pignataro, C. and R. Asati, "The Generalized TTL Security
Mechanism (GTSM) for the Label Distribution Protocol
(LDP)", RFC 6720, August 2012.
Authors' Addresses
Xia Chen
Huawei Technologies
Huawei Bld., No.156 Beiqing Rd.
Beijing 100095
China
Email: jescia.chenxia@huawei.com
Zhenbin Li
Huawei Technologies
Huawei Bld., No.156 Beiqing Rd.
Beijing 100095
China
Email: lizhenbin@huawei.com
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