BIER TE YANG module
draft-zhang-bier-te-yang-02
The information below is for an old version of the document.
| Document | Type |
This is an older version of an Internet-Draft whose latest revision state is "Replaced".
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|---|---|---|---|
| Authors | Zheng Zhang , Cui Wang , Ran Chen , fangwei hu , Mahesh Sivakumar | ||
| Last updated | 2016-10-26 | ||
| Replaced by | draft-ietf-bier-te-yang, draft-ietf-bier-te-yang | ||
| RFC stream | (None) | ||
| Formats | |||
| Stream | Stream state | (No stream defined) | |
| Consensus boilerplate | Unknown | ||
| RFC Editor Note | (None) | ||
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draft-zhang-bier-te-yang-02
BIER WG Zheng. Zhang
Internet-Draft Cui. Wang
Intended status: Standards Track Ran. Chen
Expires: April 29, 2017 Fangwei. Hu
ZTE Corporation
Mahesh. Sivakumar
Cisco Systems, Inc.
October 26, 2016
BIER TE YANG module
draft-zhang-bier-te-yang-02
Abstract
This document defines a YANG data model for BIER TE configuration and
operation.
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 April 29, 2017.
Copyright Notice
Copyright (c) 2016 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
include Simplified BSD License text as described in Section 4.e of
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the Trust Legal Provisions and are provided without warranty as
described in the Simplified BSD License.
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Design of the Data Model . . . . . . . . . . . . . . . . . . 2
3. BIER-TE configuration . . . . . . . . . . . . . . . . . . . . 4
4. Notifications . . . . . . . . . . . . . . . . . . . . . . . . 5
5. BIER TE YANG module . . . . . . . . . . . . . . . . . . . . . 5
6. Normative References . . . . . . . . . . . . . . . . . . . . 12
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 12
1. Introduction
[I-D.eckert-bier-te-arch] introduces an architecture for BIER-TE:
Traffic Engineering for Bit Index Explicit Replication (BIER). This
document defines a YANG data model for BIER TE. The content is in
keeping with the TE architecture draft.
2. Design of the Data Model
Instead of using respective sub-domain-id, si and bsl information
like in BIER yang draft [I-D.ietf-bier-bier-yang], this document
tries to group these sub-domain-id, si and bsl information in a new
bier-common grouping to simplify the reference. Later yang modules
may import the common grouping easily. Further, if this optimization
is recognized, then BIER yang draft [I-D.ietf-bier-bier-yang] will be
updated to group these sub-domain-id, si and bsl information as well.
module: ietf-bier-te
augment /rt:routing:
+--rw bier-te-config
+--rw te-subdomain* [subdomain-id]
+--rw subdomain-id bier:sub-domain-id
+--rw adj-id* [adjID]
| +--rw adjID adjid
| +--rw adj-if uint32
| +--rw (te-adjID-type)
| +--:(p2p)
| +--:(bfer)
| +--:(leaf-bfer)
| +--:(lan)
| +--:(spoke)
| +--:(ring-clockwise)
| +--:(ring-counterclockwise)
| +--:(ecmp)
| +--:(virtual-link)
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| +--:(other)
+--rw te-bsl* [fwd-bsl]
| +--rw fwd-bsl uint16
| +--rw te-si* [si]
| +--rw si bier:si
| +--rw te-f-index* [te-f-index]
| +--rw te-f-index bit-string
| +--rw (te-adj-type)
| | +--:(connected)
| | +--:(routed)
| | +--:(local-decap)
| | +--:(ecmp)
| | +--:(other)
| +--rw f-bm bit-string
| +--rw f-intf uint32
| +--rw ecmp? boolean
| +--rw ecmp-index? uint16
| +--rw frr? boolean
+--rw ecmp-path* [index]
| +--rw index uint32
| +--rw number* [number]
| +--rw number uint16
| +--rw out-if uint32
+--rw btaft* [adj-index]
+--rw adj-index uint32
+--rw bitposition bit-string
+--rw resetbitmask bit-string
+--rw addbitmask bit-string
augment /rt:routing-state:
+--ro bier-te-state
+--ro te-subdomain* [subdomain-id]
+--ro subdomain-id bier:sub-domain-id
+--ro adj-id* [adjID]
| +--ro adjID adjid
| +--ro adj-if uint32
| +--ro (te-adjID-type)
| +--:(p2p)
| +--:(bfer)
| +--:(leaf-bfer)
| +--:(lan)
| +--:(spoke)
| +--:(ring-clockwise)
| +--:(ring-counterclockwise)
| +--:(ecmp)
| +--:(virtual-link)
| +--:(other)
+--ro te-bsl* [fwd-bsl]
| +--ro fwd-bsl uint16
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| +--ro te-si* [si]
| +--ro si bier:si
| +--ro te-f-index* [te-f-index]
| +--ro te-f-index bit-string
| +--ro (te-adj-type)
| | +--:(connected)
| | +--:(routed)
| | +--:(local-decap)
| | +--:(ecmp)
| | +--:(other)
| +--ro f-bm bit-string
| +--ro f-intf uint32
| +--ro ecmp? boolean
| +--ro ecmp-index? uint16
| +--ro frr? boolean
+--ro ecmp-path* [index]
| +--ro index uint32
| +--ro number* [number]
| +--ro number uint16
| +--ro out-if uint32
+--ro btaft* [adj-index]
+--ro adj-index uint32
+--ro bitposition bit-string
+--ro resetbitmask bit-string
+--ro addbitmask bit-string
notifications:
+---n bier-te-notification
+--ro adjID-is-zero* [if-index]
+--ro if-index uint32
+--ro (te-adjID-type)
+--:(p2p)
+--:(bfer)
+--:(leaf-bfer)
+--:(lan)
+--:(spoke)
+--:(ring-clockwise)
+--:(ring-counterclockwise)
+--:(ecmp)
+--:(virtual-link)
+--:(other)
3. BIER-TE configuration
The BIER-TE information is indexed by the sub-domain ID. Maybe there
are some global BIER-TE information, it should be added in later
version.
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One interface can be used in different sub-domain, so the BIER TE
adjacency information is managed by BIER TE other than by interface.
Because the BIER-TE is controlled by controller now, the information
about IGP is not defined. If in the future the IGP is used to carry
the information about BIER-TE, the IGP extension will be added in
this document.
4. Notifications
If the adjacency id of one adjacency is set to zero, the value is
invalid. The notification should be sent to controller and network
manager.
5. BIER TE YANG module
<CODE BEGINS> file "ietf-bier-te.yang"
module ietf-bier-te {
namespace "urn:ietf:params:xml:ns:yang:ietf-bier-te";
prefix bier-te;
import ietf-routing {
prefix "rt";
}
import ietf-bier {
prefix "bier";
}
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: Zheng Zhang
<mailto:zhang.zheng@zte.com.cn>
Editor: Cui Wang
<mailto:wang.cui1@zte.com.cn>
Editor: Ran Chen
<mailto:chen.ran@zte.com.cn>
Editor: Fangwei Hu
<mailto:hu.fangwei@zte.com.cn>
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";
description
"This module contains a collection of YANG definitions for
managing BIER TE information.";
revision 2016-10-13 {
description
"Initial version.";
reference "https://tools.ietf.org/html/draft-zhang-bier-te-yang";
}
revision 2016-03-01 {
description
"Initial version.";
reference "https://tools.ietf.org/html/draft-zhang-bier-te-yang";
}
/*
* Features
*/
feature bier-te-frr {
description
"Support ECMP feature in BIER TE.";
}
grouping te-frr {
description "The TE fast reroute information.";
list btaft {
key "adj-index";
description "The adjacency index of the frr paths.";
leaf adj-index {
type uint32;
mandatory true;
description "The frr adjacency index.";
}
leaf bitposition {
type bit-string;
mandatory true;
description "The bitposition information.";
}
leaf resetbitmask {
type bit-string;
mandatory true;
description "The deleting bitmask of the forwarding item.";
}
leaf addbitmask {
type bit-string;
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mandatory true;
description "The adding bitmask of the forwarding item.";
}
}
}
grouping te-adj-type {
description "The collection of all possible adjacency type.";
choice te-adj-type {
mandatory true;
case connected {
description "The type of adjacency is connected. Mostly connected interfaces.";
}
case routed {
description "The type of adjacency is routed. Mostly not connected interfaces.";
}
case local-decap {
description "Means that the packet should be decapsulated and forward out BIER domain.";
}
case ecmp {
description "There is more than one path in the adjacency with equal cost.";
}
case other {
description "Means that the packet should be discarded.";
}
description "The collection of all possible adjacency type.";
}
}
grouping te-adjID-type {
description "The collection of all possible adjacency type.";
choice te-adjID-type {
mandatory true;
case p2p {
description "Describes p2p adjacency.";
}
case bfer {
description "Describes bfer adjacency.";
}
case leaf-bfer {
description "Describes leaf-bfer adjacency. There is no next BFR that the packet should be forwarded.";
}
case lan {
description "Describes lan adjacency..";
}
case spoke {
description "Describes spoke adjacency of hub-and-spoke.";
}
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case ring-clockwise {
description "Describes clockwise adjacency in ring.";
}
case ring-counterclockwise {
description "Describes counterclockwise adjacency in ring.";
}
case ecmp {
description "Describes ecmp adjacency.";
}
case virtual-link {
description "Describes virtual adjacency between two indirect connect nodes.";
}
case other {
description "Describes other id type of adjacency.";
}
description "The collection of all possible adjacency type.";
}
}
typedef adjid {
type uint32;
description "The type for adjacency ID.";
}
typedef bit-string {
type uint16;
description "The bit mask of one bitstring.";
}
grouping te-adjID {
list adj-id {
key "adjID";
description "This ID information of one adjacency.";
leaf adjID {
type adjid;
mandatory true;
description "The adjacency id.";
}
leaf adj-if {
/* type if:if-index; */
type uint32; /* for compilation */
mandatory true;
description "The corresponding interface of this adjacency.";
}
uses te-adjID-type;
}
description "This group presents adjacency ID information for BIER TE.";
}
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grouping te-ecmp {
description "The ecmp information.";
list ecmp-path {
key "index";
description "The index of the ecmp paths.";
leaf index {
type uint32;
mandatory true;
description "The ecmp index.";
}
list number {
key "number";
description "The list of the ecmp paths.";
leaf number {
type uint16;
mandatory true;
description "The number of the ecmp paths.";
}
leaf out-if {
/* type if:if-index; */
type uint32; /* for compilation */
mandatory true;
description "The outgoing interface.";
}
}
}
}
grouping te-items {
description "The BIER TE forwarding items collection.";
uses te-adj-type;
leaf f-bm {
type bit-string;
mandatory true;
description "The bitmask of the forwarding item.";
}
leaf f-intf {
/* type if:if-index; */
type uint32; /* for compilation */
mandatory true;
description "The out interface of this forwarding item.";
}
leaf ecmp {
type boolean;
description "The capibility of ecmp paths.";
}
leaf ecmp-index {
type uint16;
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description "The index of ecmp path.";
}
leaf frr {
type boolean;
description "The capibility of fast re-route.";
}
}
grouping te-fwd-item {
list te-si {
key "si";
description "The forwarding items of one set identifier.";
leaf si{
type bier:si;
mandatory true;
description "The set identifier of this forwarding item.";
}
list te-f-index {
key "te-f-index";
description "The forwarding information of one BIER TE item.";
leaf te-f-index {
type bit-string;
mandatory true;
description "The bit index of BIER TE forwarding item.";
}
uses te-items;
}
}
description "The forwarding items in one set identifier.";
}
grouping te-info {
description "The BIER TE forwarding information.";
list te-subdomain {
key "subdomain-id";
description "The forwarding items of one sub-domain.";
leaf subdomain-id {
type bier:sub-domain-id;
description "The sub-domain-id of this sub-domain.";
}
uses te-adjID;
list te-bsl {
key "fwd-bsl";
description "The forwarding items in one bitstringlength.";
leaf fwd-bsl {
type uint16;
description "The value of bitstringlength.";
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}
uses te-fwd-item;
}
uses te-ecmp;
uses te-frr {
if-feature bier-te-frr;
}
}
}
/*
* Configuration data nodes
*/
augment "/rt:routing" {
description "The BIER TE information.";
container bier-te-config {
description "The BIER TE information container.";
uses te-info;
}
}
/*
* Operational state data nodes
*/
augment "/rt:routing-state" {
description "BIER TE state information.";
container bier-te-state {
description "The BIER TE information in nodes.";
uses te-info;
}
}
/*
* Notifications
*/
notification bier-te-notification {
description
"This notification is sent when a condition changes in BIER TE.";
list adjID-is-zero {
key "if-index";
description "The adjacency id is zero.";
leaf if-index {
type uint32;
description "The adjacency id of this interface is zero.";
}
uses te-adjID-type;
}
}
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}
<CODE ENDS>
6. Normative References
[I-D.eckert-bier-te-arch]
Eckert, T., Cauchie, G., Braun, W., and M. Menth, "Traffic
Engineering for Bit Index Explicit Replication BIER-TE",
draft-eckert-bier-te-arch-04 (work in progress), July
2016.
[I-D.eckert-bier-te-frr]
Eckert, T., Cauchie, G., Braun, W., and M. Menth, "Fast
ReRoute (FRR) Extensions for BIER-TE", draft-eckert-bier-
te-frr-00 (work in progress), July 2016.
[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-04 (work in
progress), July 2016.
[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-00 (work in progress), July
2016.
[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>.
[RFC6087] Bierman, A., "Guidelines for Authors and Reviewers of YANG
Data Model Documents", RFC 6087, DOI 10.17487/RFC6087,
January 2011, <http://www.rfc-editor.org/info/rfc6087>.
[RFC7223] Bjorklund, M., "A YANG Data Model for Interface
Management", RFC 7223, DOI 10.17487/RFC7223, May 2014,
<http://www.rfc-editor.org/info/rfc7223>.
Authors' Addresses
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Zheng(Sandy) Zhang
ZTE Corporation
No. 50 Software Ave, Yuhuatai Distinct
Nanjing
China
Email: zhang.zheng@zte.com.cn
Cui(Linda) Wang
ZTE Corporation
No. 50 Software Ave, Yuhuatai Distinct
Nanjing
China
Email: wang.cui1@zte.com.cn
Ran Chen
ZTE Corporation
No. 50 Software Ave, Yuhuatai Distinct
Nanjing
China
Email: chen.ran@zte.com.cn
Fangwei Hu
ZTE Corporation
No.889 Bibo Rd
Shanghai
China
Email: hu.fangwei@zte.com.cn
Mahesh Sivakumar
Cisco Systems, Inc.
510 McCarthy Blvd
Milpitas,California 95035
United States
Email: masivaku@cisco.com
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