Internet DRAFT - draft-hu-bier-oam-yang
draft-hu-bier-oam-yang
BIER WG Fangwei. Hu
Internet-Draft Ran. Chen
Intended status: Standards Track ZTE Corporation
Expires: December 14, 2017 R. Gu
China Mobile
June 12, 2017
YANG Data Model for BIER OAM
draft-hu-bier-oam-yang-01.txt
Abstract
This document defines YANG data model for Bit Index Explicit
Replication (BIER) Operations, Administration, and Maintenance (OAM).
It extends from the basic YANG data model for Layer independent OAM
Management defined in [I-D.ietf-lime-yang-connectionless-oam] with
BIER technology specifics. It includes BIER OAM related
configuration and state.
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
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This Internet-Draft will expire on December 14, 2017.
Copyright Notice
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document authors. All rights reserved.
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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. Conventions and Terminology . . . . . . . . . . . . . . . . . 2
2.1. Conventions . . . . . . . . . . . . . . . . . . . . . . . 3
2.2. Terminologies . . . . . . . . . . . . . . . . . . . . . . 4
3. Architecture of OAM YANG Model and Relationship to BIER OAM . 4
4. BIER Extensions to LIME connectionless YANG Model . . . . . . 5
4.1. Test Point Locations . . . . . . . . . . . . . . . . . . 5
5. BIER OAM YANG Data Design . . . . . . . . . . . . . . . . . . 5
6. BIER OAM YANG model . . . . . . . . . . . . . . . . . . . . . 6
7. Security Considerations . . . . . . . . . . . . . . . . . . . 8
8. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 8
9. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 9
10. Normative References . . . . . . . . . . . . . . . . . . . . 9
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 10
1. Introduction
YANG [RFC6020] is a data modeling language used to model
configuration and state data manipulated by the Network Configuration
Protocol (NETCONF) [RFC6241], NETCONF remote procedure calls (RPC),
and NETCONF notifications. This document defines the YANG data model
for Bit Index Explicit Replication (BIER)OAM [I-D.ietf-bier-ping].
The BIER OAM YANG module involves the OAM configuration, and
notifications, etc.
Currently, [I-D.ietf-lime-yang-connectionless-oam] proposes a basic
YANG data model for technology-independent abstraction of key OAM
constructs for connectionless protocols. BIER OAM YANG data model
can be defined by directly extending the basic model with BIER
technology specifics. It can bring some obvious benefits such as
unified format, reusable parts, and correlation of defects, faults,
network failure at the specific layer.
In addition, various components in the BIER technology specific YANG
data model defined in [I-D.ietf-bier-bier-yang] can be directly
reused in this draft to define the BIER OAM YANG data model.
2. Conventions and Terminology
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2.1. Conventions
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 [RFC2119].
The following terms are defined in [RFC6241] and are not redefined
here:
o client
o configuration data
o server
o state data
The following terms are defined in [RFC6020] and are not redefined
here:
o augment
o data model
o data node
The terminology for describing YANG data models is found in
[RFC6020].
The following notations are used within the data tree and carry the
meaning as noted below.
Each node is printed as:
<status> <flags> <name> <opts> <type>
<status> is one of:
+ for current
x for deprecated
o for obsolete
<flags> is one of:
rw for configuration data
ro for non-configuration data
-x for rpcs
-n for notifications
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<name> is the name of the node
If the node is augmented into the tree from another module, its name
is printed as <prefix>:<name>.
<opts> is one of:
? for an optional leaf or choice
! for a presence container
* for a leaf-list or list
[<keys>] for a list's keys
<type> is the name of the type for leafs and leaf-lists
In this document, these words will appear with that interpretation
only when in ALL CAPS. Lower case uses of these words are not to be
interpreted as carrying RFC2119 significance.
2.2. Terminologies
BFR-ID: Bit-Forwarding Router identify [I-D.ietf-bier-architecture]
BIER: Bit Index Explicit Replication[I-D.ietf-bier-architecture]
BSL: Bit String Lenght [I-D.ietf-bier-architecture]
LIME: Layer Independent OAM Management
[I-D.ietf-lime-yang-connectionless-oam]
OAM: Operations, Administration, and Maintenance [RFC6291]
3. Architecture of OAM YANG Model and Relationship to BIER OAM
Layer independent OAM YANG model
[I-D.ietf-lime-yang-connectionless-oam] is used as the basis for all
the other connectionless OAM YANG models. This allows users to span
across OAM tools of different technologies through a uniform API.
The following Figure depicts the relationship of BIER OAM YANG model
to the Layer Independent OAM YANG Model.
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+-+-+-+-+-+-+-+-+-+
| Gen OAM YANG |
|(connectionless) |
+-+-+-+-+-+-+-+-+-+
|
O
|
+--------------+-----------------------------+
| | |
+-+-+-+-++ +-+-++--++ +-+-++--++
| BIER | | SFC | | foo |
|OAM YANG| |OAM YANG| |OAM YANG|
+-+-+-+-++ +-+-++--++ +-+-+-+-++
| | |
| +-+-++--++ +-+-+-+-++
| | SFC | . . . | foo |
| |sub tech| |sub tech|
| +-+-++--++ +-+-+-+-++
| | |
| | |
+--------------------------------------------------------+
| Uniform API |
+--------------------------------------------------------+
Figure 1 Relationship of BIER OAM YANG model to Layer independent
OAM YANG model
4. BIER Extensions to LIME connectionless YANG Model
4.1. Test Point Locations
BIER protocol uses BSL ,sub-domain id and BFR-id for the forwarding
indicators. So we augment the definition of BSL,sub-domain id and
BFR-id from BIER yang data model as the test point locations for BIER
OAM YANG data model.
5. BIER OAM YANG Data Design
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module: ietf-bier-oam
augment /nd:networks/nd:network/nd:node/coam:location-type/coam:ip-prefix-location-type/coam:test-point-ip-prefix-location-list/coam:test-point-locations:
+--rw bier-test-point-location-list
+--rw test-point-locations* [bier-bsl bier-subdomainid bier-bfrid]
+--rw bier-bsl bier-bsl
+--rw bier-subdomainid bier-subdomainid
+--rw bier-bfrid bier-bfrid
augment /nd:networks/nd:network/nd:node/coam:location-type/coam:ip-prefix-location-type/coam:test-point-ip-prefix-location-list/coam:test-point-locations/coam:technology:
+--:(bier-oam-string)
+--rw bier-icmp? string
6. BIER OAM YANG model
<CODE BEGINS> file "ietf-bier-oam@2017-06-13.yang"
module ietf-bier-oam {
namespace "urn:ietf:params:xml:ns:yang:ietf-bier-oam";
prefix bieroam;
import ietf-bier {
prefix bier;
}
import ietf-connectionless-oam {
prefix coam;
}
import ietf-network{
prefix nd;
}
organization
"IETF BIER(Bit Indexed Explicit Replication ) Working Group";
contact
"WG List: <mailto:bier@ietf.org>
WG Chair: Tony Przygienda
<mailto:tonysietf@gmail.com>
WG Chair: Greg Shepherd
<mailto:gjshep@gmail.com>
Editor: Fangwei Hu
<mailto:hu.fangwei@zte.com.cn>
Editor: Ran Chen
<mailto:chen.ran@zte.com.cn>
Editor: Rong Gu
<mailto:gurong@chinamobile.com>
";
description
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"The YANG module defines BIER OAM data model.";
revision 2016-12-05{
description
"00 revision";
reference
"draft-hu-bier-oam-yang-00";
}
revision 2017-06-12{
description
"01 revision,remove the OAM Layer part.";
reference
"draft-hu-bier-oam-yang-01";
}
typedef bier-bsl {
type leafref {
path "/bier:bier/bier:bier-global/bier:sub-domain/bier:bitstringlength";
}
description "bsl type";
}
typedef bier-subdomainid {
type leafref {
path "/bier:bier/bier:bier-global/bier:sub-domain/bier:sub-domain-id";
}
description "sub-domain-id type";
}
typedef bier-bfrid {
type leafref {
path "/bier:bier/bier:bier-global/bier:sub-domain/bier:bfr-id";
}
description "bfr-id type";
}
identity bier-type {
base coam:tp-address-type;
description "bier type";
}
augment "/nd:networks/nd:network/nd:node/coam:location-type/coam:ip-prefix-location-type"
+"/coam:test-point-ip-prefix-location-list/coam:test-point-locations" {
container bier-test-point-location-list {
list test-point-locations {
key "bier-bsl bier-subdomainid bier-bfrid";
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leaf bier-bsl {
type bier-bsl;
description "bier bsl";
}
leaf bier-subdomainid {
type bier-subdomainid;
description "bier sub-domain id";
}
leaf bier-bfrid {
type bier-bfrid;
description "bfr id";
}
description "test point locations list ";
}
description "bier-test-point-location-list";
}
description "bier-location-type";
}
augment "/nd:networks/nd:network/nd:node/coam:location-type/coam:ip-prefix-location-type"
+"/coam:test-point-ip-prefix-location-list/coam:test-point-locations/coam:technology" {
case bier-oam-string{
leaf bier-icmp{
type string;
description
"bier icmp";
}
description "bier oam icmp case.";
}
description "bier icmp technology.";
}
}
<CODE ENDS>
7. Security Considerations
TBD.
8. Acknowledgements
TBD.
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9. IANA Considerations
TBD.
10. Normative References
[I-D.ietf-bier-architecture]
Wijnands, I., Rosen, E., Dolganow, A., Przygienda, T., and
S. Aldrin, "Multicast using Bit Index Explicit
Replication", draft-ietf-bier-architecture-06 (work in
progress), April 2017.
[I-D.ietf-bier-bier-yang]
Chen, R., hu, f., Zhang, Z., dai.xianxian@zte.com.cn, d.,
and M. Sivakumar, "YANG Data Model for BIER Protocol",
draft-ietf-bier-bier-yang-01 (work in progress), January
2017.
[I-D.ietf-bier-ping]
Kumar, N., Pignataro, C., Akiya, N., Zheng, L., Chen, M.,
and G. Mirsky, "BIER Ping and Trace", draft-ietf-bier-
ping-01 (work in progress), January 2017.
[I-D.ietf-lime-yang-connectionless-oam]
Kumar, D., Wang, Z., Wu, Q., Rahman, R., and S. Raghavan,
"Generic YANG Data Model for Connectionless Operations,
Administration, and Maintenance(OAM) protocols", draft-
ietf-lime-yang-connectionless-oam-06 (work in progress),
June 2017.
[RFC6020] Bjorklund, M., Ed., "YANG - A Data Modeling Language for
the Network Configuration Protocol (NETCONF)", RFC 6020,
DOI 10.17487/RFC6020, October 2010,
<http://www.rfc-editor.org/info/rfc6020>.
[RFC6241] Enns, R., Ed., Bjorklund, M., Ed., Schoenwaelder, J., Ed.,
and A. Bierman, Ed., "Network Configuration Protocol
(NETCONF)", RFC 6241, DOI 10.17487/RFC6241, June 2011,
<http://www.rfc-editor.org/info/rfc6241>.
[RFC6291] Andersson, L., van Helvoort, H., Bonica, R., Romascanu,
D., and S. Mansfield, "Guidelines for the Use of the "OAM"
Acronym in the IETF", BCP 161, RFC 6291,
DOI 10.17487/RFC6291, June 2011,
<http://www.rfc-editor.org/info/rfc6291>.
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Authors' Addresses
Fangwei Hu
ZTE Corporation
No.889 Bibo Rd
Shanghai 201203
China
Phone: +86 21 68896273
Email: hu.fangwei@zte.com.cn
Ran Chen
ZTE Corporation
No.50 Software Avenue,Yuhuatai District
Nanjing, Jiangsu Province 210012
China
Phone: +86 025 88014636
Email: chen.ran@zte.com.cn
Rong Gu
China Mobile
32 Xuanwumen West Ave, Xincheng District
Beijing 100053
China
Email: gurong@chinamobile.com
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