draft-ietf-rtgwg-yang-vrrp-05.txt   draft-ietf-rtgwg-yang-vrrp-06.txt 
Network Working Group X. Liu, Ed. Network Working Group X. Liu, Ed.
Internet-Draft A. Kyparlis Internet-Draft A. Kyparlis
Intended status: Standards Track Jabil Intended status: Standards Track Jabil
Expires: April 3, 2018 R. Parikh Expires: April 29, 2018 R. Parikh
VMware VMware
A. Lindem A. Lindem
Cisco Systems Cisco Systems
M. Zhang M. Zhang
Huawei Technologies Huawei Technologies
September 30, 2017 October 26, 2017
A YANG Data Model for Virtual Router Redundancy Protocol (VRRP) A YANG Data Model for Virtual Router Redundancy Protocol (VRRP)
draft-ietf-rtgwg-yang-vrrp-05 draft-ietf-rtgwg-yang-vrrp-06
Abstract Abstract
This document describes a data model for Virtual Router Redundancy This document describes a data model for Virtual Router Redundancy
Protocol (VRRP). Both version 2 and version 3 of VRRP are covered. Protocol (VRRP). Both version 2 and version 3 of VRRP are covered.
Status of This Memo Status of This Memo
This Internet-Draft is submitted in full conformance with the This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79. provisions of BCP 78 and BCP 79.
skipping to change at page 1, line 37 skipping to change at page 1, line 37
Internet-Drafts are working documents of the Internet Engineering Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF). Note that other groups may also distribute Task Force (IETF). Note that other groups may also distribute
working documents as Internet-Drafts. The list of current Internet- working documents as Internet-Drafts. The list of current Internet-
Drafts is at http://datatracker.ietf.org/drafts/current/. Drafts is at http://datatracker.ietf.org/drafts/current/.
Internet-Drafts are draft documents valid for a maximum of six months Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress." material or to cite them other than as "work in progress."
This Internet-Draft will expire on April 3, 2018. This Internet-Draft will expire on April 29, 2018.
Copyright Notice Copyright Notice
Copyright (c) 2017 IETF Trust and the persons identified as the Copyright (c) 2017 IETF Trust and the persons identified as the
document authors. All rights reserved. document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents Provisions Relating to IETF Documents
(http://trustee.ietf.org/license-info) in effect on the date of (http://trustee.ietf.org/license-info) in effect on the date of
publication of this document. Please review these documents publication of this document. Please review these documents
skipping to change at page 2, line 28 skipping to change at page 2, line 28
2.4. Protocol States . . . . . . . . . . . . . . . . . . . . . 7 2.4. Protocol States . . . . . . . . . . . . . . . . . . . . . 7
2.5. Notifications . . . . . . . . . . . . . . . . . . . . . . 8 2.5. Notifications . . . . . . . . . . . . . . . . . . . . . . 8
3. YANG Module . . . . . . . . . . . . . . . . . . . . . . . . . 10 3. YANG Module . . . . . . . . . . . . . . . . . . . . . . . . . 10
4. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 31 4. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 31
5. Security Considerations . . . . . . . . . . . . . . . . . . . 31 5. Security Considerations . . . . . . . . . . . . . . . . . . . 31
6. References . . . . . . . . . . . . . . . . . . . . . . . . . 32 6. References . . . . . . . . . . . . . . . . . . . . . . . . . 32
6.1. Normative References . . . . . . . . . . . . . . . . . . 32 6.1. Normative References . . . . . . . . . . . . . . . . . . 32
6.2. Informative References . . . . . . . . . . . . . . . . . 33 6.2. Informative References . . . . . . . . . . . . . . . . . 33
Appendix A. Complete Model Tree Structure . . . . . . . . . . . 35 Appendix A. Complete Model Tree Structure . . . . . . . . . . . 35
Appendix B. Data Tree Example . . . . . . . . . . . . . . . . . 37 Appendix B. Data Tree Example . . . . . . . . . . . . . . . . . 37
Appendix C. YANG Model for Non-NMDA Compliant Implementations . 41 Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 41
C.1. Non-NMDA YANG Module . . . . . . . . . . . . . . . . . . 41
C.2. Non-NMDA Model Tree Structure . . . . . . . . . . . . . . 64
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 67
1. Introduction 1. Introduction
This document introduces a YANG [RFC6020][RFC7950] data model for This document introduces a YANG [RFC6020][RFC7950] data model for
Virtual Router Redundancy Protocol (VRRP) [RFC3768][RFC5798]. VRRP Virtual Router Redundancy Protocol (VRRP) [RFC3768][RFC5798]. VRRP
provides higher resiliency by specifying an election protocol that provides higher resiliency by specifying an election protocol that
dynamically assigns responsibility for a virtual router to one of the dynamically assigns responsibility for a virtual router to one of the
VRRP routers on a LAN. VRRP routers on a LAN.
This YANG model supports both version 2 and version 3 of VRRP. VRRP This YANG model supports both version 2 and version 3 of VRRP. VRRP
skipping to change at page 7, line 28 skipping to change at page 7, line 28
+--rw vrrp-instance* [vrid] +--rw vrrp-instance* [vrid]
+--rw vrid uint8 +--rw vrid uint8
| ... | ...
+--rw track +--rw track
| +--rw interfaces | +--rw interfaces
| | +--rw interface* [interface] | | +--rw interface* [interface]
| | +--rw interface if:interface-ref | | +--rw interface if:interface-ref
| | ... | | ...
| +--rw networks | +--rw networks
| +--rw network* [prefix] | +--rw network* [prefix]
| +--wo prefix inet:ipv4-prefix | +--rw prefix inet:ipv4-prefix
| ... | ...
+--rw virtual-ipv4-addresses +--rw virtual-ipv4-addresses
| +--rw virtual-ipv4-address* [ipv4-address] | +--rw virtual-ipv4-address* [ipv4-address]
| +--rw ipv4-address inet:ipv4-address | +--rw ipv4-address inet:ipv4-address
| |
+--ro <per instance operational states> +--ro <per instance operational states>
+--ro statistics +--ro statistics
+--ro <per instance statistics> +--ro <per instance statistics>
augment /if:interfaces/if:interface/ip:ipv6: augment /if:interfaces/if:interface/ip:ipv6:
skipping to change at page 10, line 7 skipping to change at page 10, line 7
o Subscribe notifications on a per client basis. o Subscribe notifications on a per client basis.
o Specify subtree filters or xpath filters so that only interested o Specify subtree filters or xpath filters so that only interested
contents will be sent. contents will be sent.
o Specify either periodic or on-demand notifications. o Specify either periodic or on-demand notifications.
3. YANG Module 3. YANG Module
<CODE BEGINS> file "ietf-vrrp@2017-09-25.yang" <CODE BEGINS> file "ietf-vrrp@2017-10-25.yang"
module ietf-vrrp { module ietf-vrrp {
yang-version 1.1; yang-version 1.1;
namespace "urn:ietf:params:xml:ns:yang:ietf-vrrp"; namespace "urn:ietf:params:xml:ns:yang:ietf-vrrp";
prefix "vrrp"; prefix "vrrp";
import ietf-inet-types { import ietf-inet-types {
prefix "inet"; prefix "inet";
} }
import ietf-yang-types { import ietf-yang-types {
skipping to change at page 11, line 12 skipping to change at page 11, line 12
Editor: Acee Lindem Editor: Acee Lindem
<mailto:acee@cisco.com> <mailto:acee@cisco.com>
Editor: Mingui Zhang Editor: Mingui Zhang
<mailto:zhangmingui@huawei.com>"; <mailto:zhangmingui@huawei.com>";
description description
"This YANG module defines a model for managing Virtual Router "This YANG module defines a model for managing Virtual Router
Redundancy Protocol (VRRP) version 2 and version 3."; Redundancy Protocol (VRRP) version 2 and version 3.";
revision 2017-09-25 { revision 2017-10-25 {
description "Initial revision"; description "Initial revision";
reference reference
"RFC XXXX: A YANG Data Model for Virtual Router Redundancy "RFC XXXX: A YANG Data Model for Virtual Router Redundancy
Protocol (VRRP). Protocol (VRRP).
RFC 2787: Definitions of Managed Objects for the Virtual RFC 2787: Definitions of Managed Objects for the Virtual
Router Redundancy Protocol. Router Redundancy Protocol.
RFC 3768: Virtual Router Redundancy Protocol (VRRP). RFC 3768: Virtual Router Redundancy Protocol (VRRP).
RFC 5798: Virtual Router Redundancy Protocol (VRRP) Version 3. RFC 5798: Virtual Router Redundancy Protocol (VRRP) Version 3.
RFC 6527: Definitions of Managed Objects for the Virtual RFC 6527: Definitions of Managed Objects for the Virtual
Router Redundancy Protocol Version 3 (VRRPv3)."; Router Redundancy Protocol Version 3 (VRRPv3).";
skipping to change at page 26, line 38 skipping to change at page 26, line 38
} }
} // container statistics } // container statistics
} // grouping vrrp-state-attributes } // grouping vrrp-state-attributes
grouping vrrp-global-state-attributes { grouping vrrp-global-state-attributes {
description description
"Group of VRRP global state attributes."; "Group of VRRP global state attributes.";
leaf virtual-routers { leaf virtual-routers {
type uint32; type uint32;
config false;
description "Number of configured virtual routers."; description "Number of configured virtual routers.";
} }
leaf interfaces { leaf interfaces {
type uint32; type uint32;
config false;
description "Number of interface with VRRP configured."; description "Number of interface with VRRP configured.";
} }
container statistics { container statistics {
config false;
description description
"VRRP global statistics."; "VRRP global statistics.";
leaf discontinuity-datetime { leaf discontinuity-datetime {
type yang:date-and-time; type yang:date-and-time;
description description
"The time on the most recent occasion at which one of "The time on the most recent occasion at which one of
checksum-errors, version-errors, vrid-errors, and checksum-errors, version-errors, vrid-errors, and
ip-ttl-errors suffered a discontinuity. ip-ttl-errors suffered a discontinuity.
skipping to change at page 29, line 4 skipping to change at page 28, line 49
key "vrid"; key "vrid";
description description
"Defines a virtual router, identified by a virtual router "Defines a virtual router, identified by a virtual router
identifier (VRID), within IPv6 address space."; identifier (VRID), within IPv6 address space.";
uses vrrp-ipv6-attributes; uses vrrp-ipv6-attributes;
uses vrrp-state-attributes; uses vrrp-state-attributes;
} // list vrrp-instance } // list vrrp-instance
} // container vrrp } // container vrrp
} // augment ipv6 } // augment ipv6
container vrrp { container vrrp {
config false;
description "VRRP data at the global level."; description "VRRP data at the global level.";
uses vrrp-global-state-attributes; uses vrrp-global-state-attributes;
} }
/* /*
* Notifications * Notifications
*/ */
notification vrrp-new-master-event { notification vrrp-new-master-event {
skipping to change at page 33, line 26 skipping to change at page 33, line 26
progress), August 2017. progress), August 2017.
[I-D.bjorklund-netmod-rfc7277bis] [I-D.bjorklund-netmod-rfc7277bis]
Bjorklund, M., "A YANG Data Model for IP Management", Bjorklund, M., "A YANG Data Model for IP Management",
draft-bjorklund-netmod-rfc7277bis-00 (work in progress), draft-bjorklund-netmod-rfc7277bis-00 (work in progress),
August 2017. August 2017.
[I-D.ietf-netmod-revised-datastores] [I-D.ietf-netmod-revised-datastores]
Bjorklund, M., Schoenwaelder, J., Shafer, P., Watsen, K., Bjorklund, M., Schoenwaelder, J., Shafer, P., Watsen, K.,
and R. Wilton, "Network Management Datastore and R. Wilton, "Network Management Datastore
Architecture", draft-ietf-netmod-revised-datastores-04 Architecture", draft-ietf-netmod-revised-datastores-05
(work in progress), August 2017. (work in progress), October 2017.
6.2. Informative References 6.2. Informative References
[RFC3768] Hinden, R., Ed., "Virtual Router Redundancy Protocol [RFC3768] Hinden, R., Ed., "Virtual Router Redundancy Protocol
(VRRP)", RFC 3768, DOI 10.17487/RFC3768, April 2004, (VRRP)", RFC 3768, DOI 10.17487/RFC3768, April 2004,
<https://www.rfc-editor.org/info/rfc3768>. <https://www.rfc-editor.org/info/rfc3768>.
[RFC6536] Bierman, A. and M. Bjorklund, "Network Configuration [RFC6536] Bierman, A. and M. Bjorklund, "Network Configuration
Protocol (NETCONF) Access Control Model", RFC 6536, Protocol (NETCONF) Access Control Model", RFC 6536,
DOI 10.17487/RFC6536, March 2012, <https://www.rfc- DOI 10.17487/RFC6536, March 2012, <https://www.rfc-
skipping to change at page 34, line 9 skipping to change at page 34, line 9
[I-D.ietf-netconf-rfc5277bis] [I-D.ietf-netconf-rfc5277bis]
Clemm, A., Prieto, A., Voit, E., Nilsen-Nygaard, E., Clemm, A., Prieto, A., Voit, E., Nilsen-Nygaard, E.,
Tripathy, A., Chisholm, S., and H. Trevino, "Subscribing Tripathy, A., Chisholm, S., and H. Trevino, "Subscribing
to Event Notifications", draft-ietf-netconf-rfc5277bis-01 to Event Notifications", draft-ietf-netconf-rfc5277bis-01
(work in progress), October 2016. (work in progress), October 2016.
[I-D.ietf-netconf-yang-push] [I-D.ietf-netconf-yang-push]
Clemm, A., Voit, E., Prieto, A., Tripathy, A., Nilsen- Clemm, A., Voit, E., Prieto, A., Tripathy, A., Nilsen-
Nygaard, E., Bierman, A., and B. Lengyel, "Subscribing to Nygaard, E., Bierman, A., and B. Lengyel, "Subscribing to
YANG datastore push updates", draft-ietf-netconf-yang- YANG datastore push updates", draft-ietf-netconf-yang-
push-09 (work in progress), September 2017. push-10 (work in progress), October 2017.
[I-D.ietf-netmod-rfc6087bis] [I-D.ietf-netmod-rfc6087bis]
Bierman, A., "Guidelines for Authors and Reviewers of YANG Bierman, A., "Guidelines for Authors and Reviewers of YANG
Data Model Documents", draft-ietf-netmod-rfc6087bis-14 Data Model Documents", draft-ietf-netmod-rfc6087bis-14
(work in progress), September 2017. (work in progress), September 2017.
Appendix A. Complete Model Tree Structure Appendix A. Complete Model Tree Structure
The VRRP YANG data model defined in this document has the following The VRRP YANG data model defined in this document has the following
tree structure: tree structure:
module: ietf-vrrp module: ietf-vrrp
+--rw vrrp +--ro vrrp
+--ro virtual-routers? uint32 +--ro virtual-routers? uint32
+--ro interfaces? uint32 +--ro interfaces? uint32
+--ro statistics +--ro statistics
+--ro discontinuity-datetime? yang:date-and-time +--ro discontinuity-datetime? yang:date-and-time
+--ro checksum-errors? yang:counter64 +--ro checksum-errors? yang:counter64
+--ro version-errors? yang:counter64 +--ro version-errors? yang:counter64
+--ro vrid-errors? yang:counter64 +--ro vrid-errors? yang:counter64
+--ro ip-ttl-errors? yang:counter64 +--ro ip-ttl-errors? yang:counter64
augment /if:interfaces/if:interface/ip:ipv4: augment /if:interfaces/if:interface/ip:ipv4:
+--rw vrrp +--rw vrrp
skipping to change at page 41, line 30 skipping to change at page 41, line 30
"statistics": { "statistics": {
"discontinuity-datetime": "2016-10-24T17:11:27+02:00", "discontinuity-datetime": "2016-10-24T17:11:27+02:00",
"checksum-errors": 2, "checksum-errors": 2,
"version-errors": 0, "version-errors": 0,
"vrid-errors": 0, "vrid-errors": 0,
"ip-ttl-errors": 1 "ip-ttl-errors": 1
} }
} }
} }
Appendix C. YANG Model for Non-NMDA Compliant Implementations
The YANG data model defined so far in this document is designed to be
used in conjunction with implementations that support the Network
Management Datastore Architecture (NMDA) defined in
[I-D.ietf-netmod-revised-datastores]. However, currently there are
existing implementations that are not NMDA compliant. In order for
such implementations to be used temporarily until NMDA
implementations are available, this section describes the following
non-NMDA version of the equivalent model.
C.1. Non-NMDA YANG Module
<CODE BEGINS> file "ietf-vrrp@2017-09-22.yang"
module ietf-vrrp {
yang-version 1.1;
namespace "urn:ietf:params:xml:ns:yang:ietf-vrrp";
prefix "vrrp";
import ietf-inet-types {
prefix "inet";
}
import ietf-yang-types {
prefix "yang";
}
import ietf-interfaces {
prefix "if";
}
import ietf-ip {
prefix "ip";
}
organization
"IETF Routing Area Working Group (RTGWG)";
contact
"WG Web: <https://datatracker.ietf.org/wg/rtgwg/>
WG List: <mailto:rtgwg@ietf.org>
WG Chair: Jeff Tantsura
<mailto:jefftant.ietf@gmail.com>
WG Chair: Chris Bowers
<mailto:cbowers@juniper.net>
Editor: Xufeng Liu
<mailto:Xufeng_Liu@jabil.com>
Editor: Athanasios Kyparlis
<mailto:Athanasios_Kyparlis@jabil.com>
Editor: Ravi Parikh
<mailto:parikhr@vmware.com>
Editor: Acee Lindem
<mailto:acee@cisco.com>
Editor: Mingui Zhang
<mailto:zhangmingui@huawei.com>";
description
"This YANG module defines a model for managing Virtual Router
Redundancy Protocol (VRRP) version 2 and version 3.";
revision 2017-09-22 {
description "Initial revision";
reference
"RFC XXXX: A YANG Data Model for Virtual Router Redundancy
Protocol (VRRP).
RFC 2787: Definitions of Managed Objects for the Virtual
Router Redundancy Protocol.
RFC 3768: Virtual Router Redundancy Protocol (VRRP).
RFC 5798: Virtual Router Redundancy Protocol (VRRP) Version 3.
RFC 6527: Definitions of Managed Objects for the Virtual
Router Redundancy Protocol Version 3 (VRRPv3).";
}
/*
* Features
*/
feature validate-interval-errors {
description
"This feature indicates that the system validates that
the advertisement interval from advertisement packets
received is the same as the one configured for the local
VRRP router.";
}
feature validate-address-list-errors {
description
"This feature indicates that the system validates that
the address list from received packets matches the
locally configured list for the VRRP router.";
}
/*
* Typedefs
*/
typedef new-master-reason-type {
type enumeration {
enum not-master {
description
"The virtual router has never transitioned to master
state,";
}
enum priority {
description "Priority was higher.";
}
enum preempted {
description "The master was preempted.";
}
enum no-response {
description "Previous master did not respond.";
}
}
description
"The reason for the virtual router to transition to master
state.";
} // new-master-reason-type
/*
* Identities
*/
/* vrrp-event-type identity and its derivatives. */
identity vrrp-event-type {
description
"The type to indicate the type of a VRRP protocol event.";
}
identity vrrp-event-none {
base vrrp-event-type;
description
"Indicates a non-meaningful event.";
}
identity vrrp-event-startup {
base vrrp-event-type;
description
"Indicates that a VRRP router has initiated the protocol.";
}
identity vrrp-event-shutdown {
base vrrp-event-type;
description
"Indicates that a VRRP router has closed down the protocol.";
}
identity vrrp-event-higher-priority-backup {
base vrrp-event-type;
description
"Indicates that a backup router has a higher priority than
the current master.";
}
identity vrrp-event-master-timeout {
base vrrp-event-type;
description
"Indicates that the current master has not sent an
advertisement within the limit of master-down-interval.";
}
identity vrrp-event-interface-up {
base vrrp-event-type;
description
"Indicates that the VRRP enabled interface has become
operational up.";
}
identity vrrp-event-interface-down {
base vrrp-event-type;
description
"Indicates that the VRRP enabled interface has become
operational down.";
}
identity vrrp-event-no-primary-ip-address {
base vrrp-event-type;
description
"Indicates that the primary IP address on the VRRP enabled
interface has become unavailable.";
}
identity vrrp-event-primary-ip-address {
base vrrp-event-type;
description
"Indicates that the primary IP address on the VRRP enabled
interface has become available.";
}
identity vrrp-event-no-virtual-ip-addresses {
base vrrp-event-type;
description
"Indicates that there are no virtual IP addresses on the
virtual router.";
}
identity vrrp-event-virtual-ip-addresses {
base vrrp-event-type;
description
"Indicates that there are virtual IP addresses on the
virtual router.";
}
identity vrrp-event-preempt-hold-timeout {
base vrrp-event-type;
description
"Indicates that the configured preemption hold time has
passed.";
}
identity vrrp-event-lower-priority-master {
base vrrp-event-type;
description
"Indicates that there is a lower priority VRRP master.";
}
identity vrrp-event-owner-preempt {
base vrrp-event-type;
description
"Indicates that the owner has preempted another router to
become the master.";
}
/* vrrp-error-global identity and its derivatives. */
identity vrrp-error-global {
description
"The type to indicate the type of a VRRP error that occurs
for a packet before it reaches a VRRP router.";
}
identity checksum-error {
base vrrp-error-global;
description
"A packet has been received with an invalid VRRP checksum
value.";
}
identity ip-ttl-error {
base vrrp-error-global;
description
"A packet has been received with IP TTL (Time-To-Live)
not equal to 255.";
}
identity version-error {
base vrrp-error-global;
description
"A packet has been received with an unknown or unsupported
version number.";
}
identity vrid-error {
base vrrp-error-global;
description
"A packet has been received with a VRID that is not valid
for any virtual router on this router.";
}
/* vrrp-error-virtual-router identity and its derivatives. */
identity vrrp-error-virtual-router {
description
"The type to indicate the type of a VRRP error that occurs
after a packet reaches a VRRP router.";
}
identity address-list-error {
base vrrp-error-virtual-router;
description
"A packet has been received with an address list that
does not match the locally configured address list for
the virtual router.";
}
identity interval-error {
base vrrp-error-virtual-router;
description
"A packet has been received with an advertisement
interval different than the one configured for the local
virtual router";
}
identity packet-length-error {
base vrrp-error-virtual-router;
description
"A packet has been received with a packet length less
than the length of the VRRP header.";
}
/* vrrp-state-type identity and its derivatives. */
identity vrrp-state-type {
description
"The type to indicate the state of a virtual router.";
}
identity initialize {
base vrrp-state-type;
description
"Indicates that the virtual router is waiting
for a startup event.";
}
identity backup {
base vrrp-state-type;
description
"Indicates that the virtual router is monitoring the
availability of the master router.";
}
identity master {
base vrrp-state-type;
description
"Indicates that the virtual router is forwarding
packets for IP addresses that are associated with
this virtual router.";
}
/* vrrp-version identity and its derivatives. */
identity vrrp-version {
description
"The version of the VRRP protocol.";
}
identity vrrp-v2 {
base vrrp-version;
description
"Indicates version 2 of the VRRP protocol.";
}
identity vrrp-v3 {
base vrrp-version;
description
"Indicates version 3 of the VRRP protocol.";
}
/*
* Groupings
*/
grouping vrrp-common-attributes {
description
"Group of VRRP attributes common to version 2 and version 3";
leaf vrid {
type uint8 {
range 1..255;
}
description "Virtual router ID.";
}
leaf version {
type identityref {
base vrrp:vrrp-version;
}
mandatory true;
description "Version 2 or version 3 of VRRP.";
}
leaf log-state-change {
type boolean;
default "false";
description
"Generates VRRP state change messages each time the VRRP
instance changes state (from up to down or down to up).";
}
container preempt {
description
"Enables a higher priority Virtual Router Redundancy
Protocol (VRRP) backup router to preempt a lower priority
VRRP master.";
leaf enabled {
type boolean;
default "true";
description
"'true' if preemption is enabled.";
}
leaf hold-time {
type uint16;
units seconds;
default 0;
description
"Hold time, in seconds, for which a higher priority VRRP
backup router must wait before preempting a lower priority
VRRP master.";
}
}
leaf priority {
type uint8 {
range 1..254;
}
default 100;
description
"Configures the Virtual Router Redundancy Protocol (VRRP)
election priority for the backup virtual router.";
}
leaf accept-mode {
when "derived-from-or-self(current()/../version, 'vrrp-v3')" {
description "Applicable only to version 3.";
}
type boolean;
default "false";
description
"Controls whether a virtual router in Master state will
accept packets addressed to the address owner's IPvX address
as its own if it is not the IPvX address owner. The default
is false. Deployments that rely on, for example, pinging the
address owner's IPvX address may wish to configure
accept-mode to true.
Note: IPv6 Neighbor Solicitations and Neighbor
Advertisements MUST NOT be dropped when accept-mode is
false.";
}
} // vrrp-common-attributes
grouping vrrp-ipv4-attributes {
description
"Group of VRRP attributes for IPv4.";
uses vrrp-common-attributes;
choice advertise-interval-choice {
description
"The options for the advertisement interval at which VRRPv2
or VRRPv3 advertisements are sent from the specified
interface.";
case v2 {
when "derived-from-or-self(version, 'vrrp-v2')" {
description "Applicable only to version 2.";
}
leaf advertise-interval-sec {
type uint8 {
range 1..254;
}
units seconds;
default 1;
description
"Configures the interval that Virtual Router
Redundancy Protocol Version 2 (VRRPv2) advertisements
are sent from the specified interface.";
}
}
case v3 {
when "derived-from-or-self(version, 'vrrp-v3')" {
description "Applicable only to version 3.";
}
leaf advertise-interval-centi-sec {
type uint16 {
range 1..4095;
}
units centiseconds;
default 100;
description
"Configures the interval that Virtual Router
Redundancy Protocol version 3 (VRRPv3) advertisements
are sent from the specified interface.";
}
}
} // advertise-interval-choice
container track {
description
"Enables the specified VRRP instance to track interfaces
or networks.";
container interfaces {
description
"Enables the specified Virtual Router Redundancy Protocol
version 2 (VRRP) or version 3 (VRRPv3) instance to track
an interface.";
list interface {
key "interface";
description
"Interface to track.";
leaf interface {
type if:interface-ref;
must "/if:interfaces/if:interface[if:name=current()]/"
+ "ip:ipv4" {
description "Interface is IPv4.";
}
description
"Interface to track.";
}
leaf priority-decrement {
type uint8 {
range 1..254;
}
default 10;
description
"Specifies how much to decrement the priority of the
VRRP instance if the interface goes down.";
}
} // interface
} // interfaces
container networks {
description
"Enables the backup Virtual Router Redundancy Protocol
version 2 (VRRP) or version 3 (VRRPv3) router to track a
specified network through the IP network prefix of that
network.";
list network {
key "prefix";
description
"Enables the specified Virtual Router Redundancy
Protocol version 2 (VRRP) or version 3 (VRRPv3)
instance to track an IP network, by specifying the
prefix of the IP network.";
leaf prefix {
type inet:ipv4-prefix;
description
"The prefix of the network to track.";
}
leaf priority-decrement {
type uint8 {
range 1..254;
}
default 10;
description
"Specifies how much to decrement the priority of the
backup VRRP router if there is a failure in the IP
network.";
}
} // track-network
} // track-networks
} // track
container virtual-ipv4-addresses {
description
"Configures the virtual IP address for the Virtual Router
Redundancy Protocol (VRRP) interface.";
list virtual-ipv4-address {
key "ipv4-address";
max-elements 16;
description
"Virtual IP addresses for a single VRRP instance. For a
VRRP owner router, the virtual address must match one
of the IP addresses configured on the interface
corresponding to the virtual router.";
leaf ipv4-address {
type inet:ipv4-address;
description
"An IPv4 address associated with a virtual router.";
reference
"RFC 5798: Virtual Router Redundancy Protocol (VRRP)
Version 3. Section 1.2.";
}
} // virtual-ipv4-address
} // virtual-ipv4-addresses
} // grouping vrrp-ipv4-attributes
grouping vrrp-ipv6-attributes {
description
"Group of VRRP attributes for IPv6.";
uses vrrp-common-attributes;
leaf advertise-interval-centi-sec {
type uint16 {
range 1..4095;
}
units centiseconds;
default 100;
description
"Configures the interval that Virtual Router
Redundancy Protocol version 3 (VRRPv3) advertisements
are sent from the specified interface.";
}
container track {
description
"Enables the specified VRRP instance to track interfaces
or networks.";
container interfaces {
description
"Enables the specified Virtual Router Redundancy Protocol
version 2 (VRRP) or version 3 (VRRPv3) instance to track
an interface.";
list interface {
key "interface";
description
"Interface to track.";
leaf interface {
type if:interface-ref;
must "/if:interfaces/if:interface[if:name=current()]/"
+ "ip:ipv6" {
description "Interface is IPv6.";
}
description
"Interface to track.";
}
leaf priority-decrement {
type uint8 {
range 1..254;
}
default 10;
description
"Specifies how much to decrement the priority of the
VRRP instance if the interface goes down.";
}
} // interface
} // interfaces
container networks {
description
"Enables the backup Virtual Router Redundancy Protocol
version 2 (VRRP) or version 3 (VRRPv3) router to track a
specified network through the IP network prefix of that
network.";
list network {
key "prefix";
description
"Enables the specified Virtual Router Redundancy
Protocol version 2 (VRRP) or version 3 (VRRPv3)
instance to track an IP network, by specifying the
prefix of the IP network.";
leaf prefix {
type inet:ipv6-prefix;
description
"The prefix of the network to track.";
}
leaf priority-decrement {
type uint8 {
range 1..254;
}
default 10;
description
"Specifies how much to decrement the priority of the
backup VRRP router if there is a failure in the IP
network.";
}
} // track-network
} // track-networks
} // track
container virtual-ipv6-addresses {
description
"Configures the virtual IP address for the Virtual Router
Redundancy Protocol (VRRP) interface.";
list virtual-ipv6-address {
key "ipv6-address";
max-elements 2;
description
"Two IPv6 addresses are allowed. The first one must be
a link-local address and the second one can be a
link-local or global address.";
leaf ipv6-address {
type inet:ipv6-address;
description
"An IPv6 address associated with a virtual router.";
reference
"RFC 5798: Virtual Router Redundancy Protocol (VRRP)
Version 3. Section 1.3.";
}
} // virtual-ipv6-address
} // virtual-ipv6-addresses
} // grouping vrrp-ipv6-attributes
grouping vrrp-state-attributes {
description
"Group of VRRP state attributes.";
leaf state {
type identityref {
base vrrp:vrrp-state-type;
}
description
"Operational state.";
}
leaf is-owner {
type boolean;
description
"Set to true if this virtual router is owner.";
}
leaf last-adv-source {
type inet:ip-address;
description
"Last advertised IPv4/IPv6 source address";
}
leaf up-datetime {
type yang:date-and-time;
description
"The date and time when this virtual router
transitioned out of init state.";
}
leaf master-down-interval {
type uint32;
units centiseconds;
description
"Time interval for backup virtual router to declare
Master down.";
}
leaf skew-time {
type uint32;
units microseconds;
description
"Calculated based on the priority and advertisement
interval configuration command parameters. See RFC 3768.";
}
leaf last-event {
type identityref {
base vrrp:vrrp-event-type;
}
description
"Last reported event.";
}
leaf new-master-reason {
type new-master-reason-type;
description
"Indicates the reason for the virtual router to transition
to master state.";
}
container statistics {
description
"VRRP statistics.";
leaf discontinuity-datetime {
type yang:date-and-time;
description
"The time on the most recent occasion at which any one or
more of the VRRP 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 that the
local management subsystem re-initialized itself.";
}
leaf master-transitions {
type yang:counter32;
description
"The total number of times that this virtual router's
state has transitioned to master";
}
leaf advertisement-recv {
type yang:counter64;
description
"The total number of VRRP advertisements received by
this virtual router.";
}
leaf advertisement-sent {
type yang:counter64;
description
"The total number of VRRP advertisements sent by
this virtual router.";
}
leaf interval-errors {
if-feature validate-interval-errors;
type yang:counter64;
description
"The total number of VRRP advertisement packets
received with an advertisement interval
different than the one configured for the local
virtual router";
}
leaf priority-zero-pkts-rcvd {
type yang:counter64;
description
"The total number of VRRP packets received by the
virtual router with a priority of 0.";
}
leaf priority-zero-pkts-sent {
type yang:counter64;
description
"The total number of VRRP packets sent by the
virtual router with a priority of 0.";
}
leaf invalid-type-pkts-rcvd {
type yang:counter64;
description
"The number of VRRP packets received by the virtual
router with an invalid value in the 'type' field.";
}
leaf address-list-errors {
if-feature validate-address-list-errors;
type yang:counter64;
description
"The total number of packets received with an
address list that does not match the locally
configured address list for the virtual router.";
}
leaf packet-length-errors {
type yang:counter64;
description
"The total number of packets received with a packet
length less than the length of the VRRP header.";
}
} // container statistics
} // grouping vrrp-state-attributes
grouping vrrp-global-state-attributes {
description
"Group of VRRP global state attributes.";
leaf virtual-routers {
type uint32;
description "Number of configured virtual routers.";
}
leaf interfaces {
type uint32;
description "Number of interface with VRRP configured.";
}
container statistics {
description
"VRRP global statistics.";
leaf discontinuity-datetime {
type yang:date-and-time;
description
"The time on the most recent occasion at which one of
checksum-errors, version-errors, vrid-errors, and
ip-ttl-errors 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 that the local management
subsystem re-initialized itself.";
}
leaf checksum-errors {
type yang:counter64;
description
"The total number of VRRP packets received with an invalid
VRRP checksum value.";
reference "RFC 5798, Section 5.2.8";
}
leaf version-errors {
type yang:counter64;
description
"The total number of VRRP packets received with an unknown
or unsupported version number.";
reference "RFC 5798, Section 5.2.1";
}
leaf vrid-errors {
type yang:counter64;
description
"The total number of VRRP packets received with a VRID that
is not valid for any virtual router on this router.";
reference "RFC 5798, Section 5.2.3";
}
leaf ip-ttl-errors {
type yang:counter64;
description
"The total number of VRRP packets received by the
virtual router with IP TTL (Time-To-Live) not equal
to 255.";
reference "RFC 5798, Sections 5.1.1.3 and 5.1.2.3.";
}
} // statistics
} // vrrp-global-state-attributes
/*
* Configuration data nodes
*/
augment "/if:interfaces/if:interface/ip:ipv4" {
description "Augment IPv4 interface.";
container vrrp {
description
"Configures the Virtual Router Redundancy Protocol (VRRP)
version 2 or version 3 for IPv4.";
list vrrp-instance {
key "vrid";
description
"Defines a virtual router, identified by a virtual router
identifier (VRID), within IPv4 address space.";
uses vrrp-ipv4-attributes;
}
}
} // augment ipv4
augment "/if:interfaces/if:interface/ip:ipv6" {
description "Augment IPv6 interface.";
container vrrp {
description
"Configures the Virtual Router Redundancy Protocol (VRRP)
version 3 for IPv6.";
list vrrp-instance {
must "derived-from-or-self(version, 'vrrp-v3')" {
description
"IPv6 is only supported by version 3.";
}
key "vrid";
description
"Defines a virtual router, identified by a virtual router
identifier (VRID), within IPv6 address space.";
uses vrrp-ipv6-attributes;
} // list vrrp-instance
} // container vrrp
} // augment ipv6
/*
* Operational state data nodes
*/
augment "/if:interfaces-state/if:interface/ip:ipv4" {
description "Augment IPv4 interface state.";
container vrrp {
description
"State information for Virtual Router Redundancy Protocol
(VRRP) version 2 for IPv4.";
list vrrp-instance {
key "vrid";
description
"States of a virtual router, identified by a virtual router
identifier (VRID), within IPv4 address space.";
uses vrrp-ipv4-attributes;
uses vrrp-state-attributes;
} // list vrrp-instance
}
}
augment "/if:interfaces-state/if:interface/ip:ipv6" {
description "Augment IPv6 interface state.";
container vrrp {
description
"State information of the Virtual Router Redundancy Protocol
(VRRP) version 2 or version 3 for IPv6.";
list vrrp-instance {
key "vrid";
description
"States of a virtual router, identified by a virtual router
identifier (VRID), within IPv6 address space.";
uses vrrp-ipv6-attributes;
uses vrrp-state-attributes;
} // list vrrp-instance
}
}
augment "/if:interfaces-state" {
description "Specify VRRP state data at the global level.";
container vrrp-global {
description
"State information of the Virtual Router Redundancy Protocol
(VRRP) at the global level";
uses vrrp-global-state-attributes;
}
}
/*
* Notifications
*/
notification vrrp-new-master-event {
description
"Notification event for a change of VRRP new master.";
leaf master-ip-address {
type inet:ip-address;
mandatory true;
description
"IPv4 or IPv6 address of the new master.";
}
leaf new-master-reason {
type new-master-reason-type;
mandatory true;
description
"Indicates the reason for the virtual router to transition
to master state.";
}
}
notification vrrp-protocol-error-event {
description
"Notification event for a VRRP protocol error.";
leaf protocol-error-reason {
type identityref {
base vrrp:vrrp-error-global;
}
mandatory true;
description
"Indicates the reason for the protocol error.";
}
}
notification vrrp-virtual-router-error-event {
description
"Notification event for an error happened on a virtual
router.";
leaf interface {
type if:interface-ref;
mandatory true;
description
"Indicates the interface for which statistics area
to be cleared.";
}
choice ip-version {
mandatory true;
description
"The error may have happened on either an IPv4 virtual
router or an IPv6 virtual router. The information
related to a specific IP version is provided by one of
the following cases.";
case ipv4 {
description "IPv4";
container ipv4 {
description
"Error information for IPv4.";
leaf vrid {
type leafref {
path "/if:interfaces/if:interface"
+ "[if:name = current()/../../vrrp:interface]/"
+ "ip:ipv4/vrrp:vrrp/vrrp:vrrp-instance/vrrp:vrid";
}
mandatory true;
description
"Indicates the virtual router on which the event has
occurred.";
}
}
}
case ipv6 {
description "IPv6";
container ipv6 {
description
"Error information for IPv6.";
leaf vrid {
type leafref {
path "/if:interfaces/if:interface"
+ "[if:name = current()/../../vrrp:interface]/"
+ "ip:ipv6/vrrp:vrrp/vrrp:vrrp-instance/vrrp:vrid";
}
mandatory true;
description
"Indicates the virtual router on which the event has
occurred.";
}
}
}
}
leaf virtual-router-error-reason {
type identityref {
base vrrp:vrrp-error-virtual-router;
}
mandatory true;
description
"Indicates the reason for the virtual router error.";
}
}
}
<CODE ENDS>
C.2. Non-NMDA Model Tree Structure
module: ietf-vrrp
augment /if:interfaces/if:interface/ip:ipv4:
+--rw vrrp
+--rw vrrp-instance* [vrid]
+--rw vrid uint8
+--rw version identityref
+--rw log-state-change? boolean
+--rw preempt
| +--rw enabled? boolean
| +--rw hold-time? uint16
+--rw priority? uint8
+--rw accept-mode? boolean
+--rw (advertise-interval-choice)?
| +--:(v2)
| | +--rw advertise-interval-sec? uint8
| +--:(v3)
| +--rw advertise-interval-centi-sec? uint16
+--rw track
| +--rw interfaces
| | +--rw interface* [interface]
| | +--rw interface if:interface-ref
| | +--rw priority-decrement? uint8
| +--rw networks
| +--rw network* [prefix]
| +--rw prefix inet:ipv4-prefix
| +--rw priority-decrement? uint8
+--rw virtual-ipv4-addresses
+--rw virtual-ipv4-address* [ipv4-address]
+--rw ipv4-address inet:ipv4-address
augment /if:interfaces/if:interface/ip:ipv6:
+--rw vrrp
+--rw vrrp-instance* [vrid]
+--rw vrid uint8
+--rw version identityref
+--rw log-state-change? boolean
+--rw preempt
| +--rw enabled? boolean
| +--rw hold-time? uint16
+--rw priority? uint8
+--rw accept-mode? boolean
+--rw advertise-interval-centi-sec? uint16
+--rw track
| +--rw interfaces
| | +--rw interface* [interface]
| | +--rw interface if:interface-ref
| | +--rw priority-decrement? uint8
| +--rw networks
| +--rw network* [prefix]
| +--rw prefix inet:ipv6-prefix
| +--rw priority-decrement? uint8
+--rw virtual-ipv6-addresses
+--rw virtual-ipv6-address* [ipv6-address]
+--rw ipv6-address inet:ipv6-address
augment /if:interfaces-state/if:interface/ip:ipv4:
+--ro vrrp
+--ro vrrp-instance* [vrid]
+--ro vrid uint8
+--ro version identityref
+--ro log-state-change? boolean
+--ro preempt
| +--ro enabled? boolean
| +--ro hold-time? uint16
+--ro priority? uint8
+--ro accept-mode? boolean
+--ro (advertise-interval-choice)?
| +--:(v2)
| | +--ro advertise-interval-sec? uint8
| +--:(v3)
| +--ro advertise-interval-centi-sec? uint16
+--ro track
| +--ro interfaces
| | +--ro interface* [interface]
| | +--ro interface if:interface-ref
| | +--ro priority-decrement? uint8
| +--ro networks
| +--ro network* [prefix]
| +--ro prefix inet:ipv4-prefix
| +--ro priority-decrement? uint8
+--ro virtual-ipv4-addresses
| +--ro virtual-ipv4-address* [ipv4-address]
| +--ro ipv4-address inet:ipv4-address
+--ro state? identityref
+--ro is-owner? boolean
+--ro last-adv-source? inet:ip-address
+--ro up-datetime? yang:date-and-time
+--ro master-down-interval? uint32
+--ro skew-time? uint32
+--ro last-event? identityref
+--ro new-master-reason?
new-master-reason-type
+--ro statistics
+--ro discontinuity-datetime? yang:date-and-time
+--ro master-transitions? yang:counter32
+--ro advertisement-recv? yang:counter64
+--ro advertisement-sent? yang:counter64
+--ro interval-errors? yang:counter64
{validate-interval-errors}?
+--ro priority-zero-pkts-rcvd? yang:counter64
+--ro priority-zero-pkts-sent? yang:counter64
+--ro invalid-type-pkts-rcvd? yang:counter64
+--ro address-list-errors? yang:counter64
{validate-address-list-errors}?
+--ro packet-length-errors? yang:counter64
augment /if:interfaces-state/if:interface/ip:ipv6:
+--ro vrrp
+--ro vrrp-instance* [vrid]
+--ro vrid uint8
+--ro version identityref
+--ro log-state-change? boolean
+--ro preempt
| +--ro enabled? boolean
| +--ro hold-time? uint16
+--ro priority? uint8
+--ro accept-mode? boolean
+--ro advertise-interval-centi-sec? uint16
+--ro track
| +--ro interfaces
| | +--ro interface* [interface]
| | +--ro interface if:interface-ref
| | +--ro priority-decrement? uint8
| +--ro networks
| +--ro network* [prefix]
| +--ro prefix inet:ipv6-prefix
| +--ro priority-decrement? uint8
+--ro virtual-ipv6-addresses
| +--ro virtual-ipv6-address* [ipv6-address]
| +--ro ipv6-address inet:ipv6-address
+--ro state? identityref
+--ro is-owner? boolean
+--ro last-adv-source? inet:ip-address
+--ro up-datetime? yang:date-and-time
+--ro master-down-interval? uint32
+--ro skew-time? uint32
+--ro last-event? identityref
+--ro new-master-reason?
new-master-reason-type
+--ro statistics
+--ro discontinuity-datetime? yang:date-and-time
+--ro master-transitions? yang:counter32
+--ro advertisement-recv? yang:counter64
+--ro advertisement-sent? yang:counter64
+--ro interval-errors? yang:counter64
{validate-interval-errors}?
+--ro priority-zero-pkts-rcvd? yang:counter64
+--ro priority-zero-pkts-sent? yang:counter64
+--ro invalid-type-pkts-rcvd? yang:counter64
+--ro address-list-errors? yang:counter64
{validate-address-list-errors}?
+--ro packet-length-errors? yang:counter64
augment /if:interfaces-state:
+--ro vrrp-global
+--ro virtual-routers? uint32
+--ro interfaces? uint32
+--ro statistics
+--ro discontinuity-datetime? yang:date-and-time
+--ro checksum-errors? yang:counter64
+--ro version-errors? yang:counter64
+--ro vrid-errors? yang:counter64
+--ro ip-ttl-errors? yang:counter64
notifications:
+---n vrrp-new-master-event
| +--ro master-ip-address inet:ip-address
| +--ro new-master-reason new-master-reason-type
+---n vrrp-protocol-error-event
| +--ro protocol-error-reason identityref
+---n vrrp-virtual-router-error-event
+--ro interface if:interface-ref
+--ro (ip-version)
| +--:(ipv4)
| | +--ro ipv4
| | +--ro vrid -> /if:interfaces/interface[if:name =
current()/../../vrrp:interface]/ip:ipv4/vrrp:vrrp/vrrp-instance/vrid
| +--:(ipv6)
| +--ro ipv6
| +--ro vrid -> /if:interfaces/interface[if:name =
current()/../../vrrp:interface]/ip:ipv6/vrrp:vrrp/vrrp-instance/vrid
+--ro virtual-router-error-reason identityref
Authors' Addresses Authors' Addresses
Xufeng Liu (editor) Xufeng Liu (editor)
Jabil Jabil
8281 Greensboro Drive, Suite 200 8281 Greensboro Drive, Suite 200
McLean VA 22102 McLean VA 22102
USA USA
EMail: Xufeng_Liu@jabil.com EMail: Xufeng_Liu@jabil.com
Athanasios Kyparlis Athanasios Kyparlis
Jabil Jabil
8281 Greensboro Drive, Suite 200 8281 Greensboro Drive, Suite 200
McLean VA 22102 McLean VA 22102
USA USA
EMail: Athanasios_Kyparlis@jabil.com EMail: Athanasios_Kyparlis@jabil.com
Ravi Parikh Ravi Parikh
VMware VMware
3425 Hillview Avenue 3425 Hillview Avenue
Palo Alto CA 94304 Palo Alto CA 94304
USA USA
EMail: parikhr@vmware.com EMail: parikhr@vmware.com
Acee Lindem Acee Lindem
Cisco Systems Cisco Systems
 End of changes. 19 change blocks. 
1275 lines changed or deleted 15 lines changed or added

This html diff was produced by rfcdiff 1.46. The latest version is available from http://tools.ietf.org/tools/rfcdiff/