| Internet-Draft | MPLS MSD YANG | February 2022 |
| Qu, et al. | Expires 6 August 2022 | [Page] |
This document defines a YANG data module augmenting the IETF MPLS YANG model to provide support for MPLS Maximum SID Depths (MSDs) as defined in RFC 8476 and RFC 8491.¶
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Copyright (c) 2022 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 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 Revised BSD License text as described in Section 4.e of the Trust Legal Provisions and are provided without warranty as described in the Revised BSD License.¶
YANG [RFC7950] is a data definition language used to define the contents of a conceptual data store that allows networked devices to be managed using NETCONF [RFC6241] or RESTCONF [RFC8040].¶
This document defines a YANG data model augmenting the IETF MPLS YANG model [RFC8960], which itself augments [RFC8349], to provide operational state for various MSDs[RFC8662].¶
The augmentation defined in this document requires support for the MPLS base model[RFC8960] which defines basic MPLS configuration and state.¶
The YANG module in this document conforms to the Network Management Datastore Architecture (NMDA) [RFC8342].¶
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in BCP 14 [RFC2119] [RFC8174] when, and only when, they appear in all capitals, as shown here.¶
This document defines a YANG module for MSD extensions [RFC8476][RFC8491] to MPLS base model as defined in [RFC8960].¶
module: ietf-mpls-msd
augment /rt:routing/mpls:mpls:
+--ro node-msd
+--ro node-msds* []
+--ro msd-type? identityref
+--ro msd-value? uint8
augment /rt:routing/mpls:mpls/mpls:interfaces/mpls:interface:
+--ro link-msd
+--ro link-msds* []
+--ro msd-type? identityref
+--ro msd-value? uint8
¶
<CODE BEGINS> file "ietf-mpls-msd@2021-08-02.yang"
module ietf-mpls-msd {
yang-version 1.1;
namespace "urn:ietf:params:xml:ns:yang:ietf-mpls-msd";
prefix mpls-msd;
import ietf-routing {
prefix rt;
reference
"RFC 8349: A YANG Data Model for Routing
Management (NMDA Version)";
}
import ietf-mpls {
prefix mpls;
reference "RFC 8960: A YANG Data Model for MPLS Base";
}
organization
"IETF MPLS - MPLS Working Group";
contact
"WG Web: <https://tools.ietf.org/wg/mpls/>
WG List: <mailto:mpls@ietf.org>
Author: Yingzhen Qu
<mailto:yingzhen.qu@futurewei.com>
Author: Acee Lindem
<mailto:acee@cisco.com>
Author: Stephane Litkowski
<mailto:slitkows.ietf@gmail.com>
Author: Jeff Tantsura
<mailto:jefftant.ietf@gmail.com>
";
description
"The YANG module augments the base MPLS model, and it is to
manage different types of Maximum SID Depth (MSD).
This YANG model conforms to the Network Management
Datastore Architecture (NMDA) as described in RFC 8342.
Copyright (c) 2021 IETF Trust and the persons identified as
authors of the code. All rights reserved.
Redistribution and use in source and binary forms, with or
without modification, is permitted pursuant to, and subject
to the license terms contained in, the Simplified BSD License
set forth in Section 4.c of the IETF Trust's Legal Provisions
Relating to IETF Documents
(https://trustee.ietf.org/license-info).
This version of this YANG module is part of RFC XXXX;
see the RFC itself for full legal notices.
The key words 'MUST', 'MUST NOT', 'REQUIRED', 'SHALL', 'SHALL
NOT', 'SHOULD', 'SHOULD NOT', 'RECOMMENDED', 'NOT RECOMMENDED',
'MAY', and 'OPTIONAL' in this document are to be interpreted as
described in BCP 14 (RFC 2119) (RFC 8174) when, and only when,
they appear in all capitals, as shown here.";
reference "RFC XXXX: YANG Data Model for Segment Routing.";
revision 2021-08-02 {
description
"Initial Version";
reference "RFC XXXX: YANG Data Model for Segment Routing.";
}
identity msd-base-type {
description
"Base identity for Maximum SID Depth (MSD) Type";
}
identity msd-mpls {
base msd-base-type;
description
"Base MPLS Imposition MSD.";
reference
"RFC 8491: Singling Maximum SID Depth (MSD) using IS-IS.";
}
identity msd-erld {
base msd-base-type;
description
"msd-erld is defined to advertise the Entropy Readable
Label Depth (ERLD).";
reference
"RFC 8662: Entropy Label for Source Packet Routing in
Networking (SPRING) Tunnels";
}
augment "/rt:routing/mpls:mpls" {
description
"This module augments MPLS data model (RFC 8960)
with node MSD.";
container node-msd {
config false;
description
"Maximum SID Depth (MSD) operational state.";
list node-msds {
leaf msd-type {
type identityref {
base msd-base-type;
}
description
"MSD types";
}
leaf msd-value {
type uint8;
description
"MSD value, in the range of 0-255.";
}
description
"Node MSD is the smallest link MSD supported by
the node.";
}
}
}
augment "/rt:routing/mpls:mpls/mpls:interfaces/mpls:interface" {
description
"This module augments MPLS data model (RFC 8960)
with link MSD.";
container link-msd {
config false;
description
"Maximum SID Depth (MSD) interface operational state.";
list link-msds {
leaf msd-type {
type identityref {
base msd-base-type;
}
description
"MSD type";
}
leaf msd-value {
type uint8;
description
"MSD value, in the range of 0-255.";
}
description
"List of link MSDs";
}
}
}
}
<CODE ENDS>¶
The YANG modules specified in this document define a schema for data that is designed to be accessed via network management protocols such as NETCONF [RFC6241] or RESTCONF [RFC8040]. The lowest NETCONF layer is the secure transport layer, and the mandatory-to-implement secure transport is Secure Shell (SSH) [RFC6242]. The lowest RESTCONF layer is HTTPS, and the mandatory-to-implement secure transport is TLS [RFC8446].¶
The NETCONF Access Control Model (NACM) [RFC8341] provides the means to restrict access for particular NETCONF or RESTCONF users to a pre-configured subset of all available NETCONF or RESTCONF protocol operations and content.¶
There are a number of data nodes defined in the modules that are writable/creatable/deletable (i.e., config true, which is the default). These data nodes may be considered sensitive or vulnerable in some network environments. Write operations (e.g., edit-config) to these data nodes without proper protection can have a negative effect on network operations.¶
Some of the readable data nodes in the modules may be considered sensitive or vulnerable in some network environments. It is thus important to control read access (e.g., via get, get-config, or notification) to these data nodes. These are the subtrees and data nodes and their sensitivity/vulnerability:¶
This document registers URIs in the IETF XML registry [RFC3688]. Following the format in [RFC3688], the following registrations is requested to be made:¶
URI: urn:ietf:params:xml:ns:yang:ietf-mpls-msd Registrant Contact: The IESG. XML: N/A, the requested URI is an XML namespace.¶
This document registers the YANG modules in the YANG Module Names registry [RFC6020].¶
name: ietf-mpls-msd namespace: urn:ietf:params:xml:ns:yang:ietf-mpls-msd prefix: mpls-msd reference: RFC XXXX¶
This document was produced using Marshall Rose's xml2rfc tool.¶
The YANG model was developed using the suite of YANG tools written and maintained by numerous authors.¶