Internet-Draft Network Inventory Software October 2023
Wu, et al. Expires 20 April 2024 [Page]
Intended Status:
Standards Track
B. Wu
C. Zhou
China Mobile
Q. Wu
M. Boucadair

A YANG Network Data Model of Network Inventory Software Extensions


This document defines the YANG model for network inventory software extensions to support more comprehensive software components and software-enabled network devices, e.g. virtual Provider Edge (PE), virtul Fire Wall (FW).

This document augments the 'ietf-network-inventory' data model defined in xxx by adding the software components identification and new Network Element (NE) type.

Status of This Memo

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This Internet-Draft will expire on 20 April 2024.

Table of Contents

1. Introduction

The Network Inventory support the inventory management of all the network devices, hardware components, firmware components, and software components on the a managed network domain. Examples of inventory hardware components could be rack, shelf, slot, board and physical port. Examples of inventory software components could be platform operating system (OS), software-patch, bios, and boot-loader.

This document extends the 'ietf-network-inventory' model for software extensions by adding the software components identification and new Network Element (NE) type, which supports more comprehensive software components and software-enabled network devices, e.g. virtual Provider Edge (PE), virtul Fire Wall (FW).

The YANG data model in Section 5 conforms to the Network Management Datastore Architecture (NMDA) [RFC8342].

2. Requirements Language

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.

3. Relationship to Other YANG Data Models

The base network inventory model supports the software versions of NEs and software versions of hardware components. This document adds more software component identifiers (e.g. platformos, software patch) and more NE types (e.g. virtual NE) to provide enhanced software information on the NE to facilitate software compatibility check.

Figure Figure 1 depicts the relationship between the Software Extension model and other models. The Software Extension network inventory model enhances the model defined in the base network inventory model.

             |                         |
             | Base Network Inventory  |
             |                         |
       |                  |                   |
+------V------+    +------V------      +------V------
|             |    |             |     |             |
| Hardware    |    |  Software   |     |             |
| Extensions  |    |  Extensions |     | Entitlement |
| e.g. Power  |    |  e.g.       |     |             |
| supply unit |    |  SW patch   |     |             |
+-------------+    +-------------+     +-------------+

Figure 1: Relationship of SW Extension Model to Other Inventory Models

4. Model Overview

The following tree diagram [RFC8340] provides an overview of the data model for "ietf-network-inventory-sw-ext" module.

module: ietf-network-inventory-sw-ext
  augment /ni:network-elements/ni:network-element:
    +--rw virtual-ne-attributes
  augment /ni:network-elements/ni:network-element/ni:components/ni:component:
    +--rw software-module-specific-info

5. YANG Data model for Network Inventory Software Extensions

The "ietf-network-inventory-sw-ext" module uses types defined in xxxx.

<CODE BEGINS> file="ietf-network-inventory-sw-ext@2023-10-19.yang"
module ietf-network-inventory-sw-ext {
  yang-version 1.1;
  namespace "urn:ietf:params:xml:ns:yang:ietf-network-inventory-sw-ext";
  prefix nis;

  import ietf-network-inventory {
    prefix ni;
      "RFCxxxx: IETF Network Inventory";

    "IETF Network Inventory YANG (ivy) Working Group";
    "WG Web:   <>
     WG List:  <>

     Editor: Bo Wu
     Editor: Cheng Zhou
     Editor: Qin Wu
     Editor: Mohamed Boucadair
    "This YANG module defines a model for network inventory software

     Copyright (c) 2023 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 Revised BSD License
     set forth in Section 4.c of the IETF Trust's Legal Provisions
     Relating to IETF Documents

     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
     '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.";

  revision 2023-10-19 {
      "Initial version";
      "RFC XXXX: A YANG Data Model for Network Inventory Software

  identity ne-virtual {
    base ni:ne-type;
      "A virtual network element (NE). ";

  identity software-component {
    base ni:non-hardware-component;
      "Base identity for software components in a managed

  identity operating-system {
    base software-component;
      "OS software type.";

  identity operating-system-patch {
    base software-component;
      "An operating system update - which should be a subcomponent
       of the `operating-system` running on a component. A patch is
       defined to be a set of software changes that are atomically
       installed (and uninstalled) together. ";

  identity bios {
    base software-component;
      "Legacy BIOS or UEFI firmware interface responsible for
       initializing hardware components and first stage boot

  identity boot-loader {
    base software-component;
      "Software layer responsible for loading and booting the
       device OS or network OS.";

  identity software-module {
    base software-component;
      "A base identity for software modules installed and/or
       running on the device.  Modules include user-space programs
       and kernel modules that provide specific functionality.
       A component with type SOFTWARE_MODULE should also have a
       module type that indicates the specific type of software

  grouping software-module-specific-info-grouping {
    //To be enriched in the future.
      "Specific attributes applicable to Software Modules only.";

  /* Main blocks */

  augment "/ni:network-elements/ni:network-element" {
      "Augment network element (NE) attributes.";
    container virtual-ne-attributes {
      when "derived-from-or-self(../ni:ne-type,'ne-virtual')";
        "Container for the attributes applicable only to virtual
         Network Elements (NEs).";
      //To be enriched in the future.

  augment "/ni:network-elements/ni:network-element/ni:components/"
        + "ni:component" {
      "Augment component attributes.";
    container software-module-specific-info {
      when "derived-from-or-self(../ni:class,'software-module')";
        "This container contains some attributes belong to
         Software Modules only.";
      uses software-module-specific-info-grouping;


6. Security Considerations

The YANG module specified in this document defines a data schema designed to be accessed through network management protocols such as NETCONF [RFC6241] or RESTCONF [RFC8040]. The lowest NETCONF layer is the secure transport layer, and the required secure transport is Secure Shell (SSH) [RFC6242]. The lowest RESTCONF layer is HTTPS, and the required secure transport is TLS [RFC8446].

The Network Configuration Access Control Model (NACM) [RFC8341] provides a means of restricting access to specific NETCONF or RESTCONF users to a preconfigured subset of all available NETCONF or RESTCONF protocol operations and contents. Thus, NACM SHOULD be used to restrict the NSF registration from unauthorized users.

There are a number of data nodes defined in this YANG module that are writable, creatable, and deletable (i.e., config true, which is the default). These data nodes may be considered sensitive or vulnerable in some network environments. Write operations to these data nodes could have a negative effect on network and security operations.

Some of the readable data nodes in this YANG module 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:

<<<to be completed>>>

7. IANA Considerations

This document registers a URI in the "IETF XML Registry" [RFC3688]. Following the format in [RFC3688], the following registration has been made.

     URI: urn:ietf:params:xml:ns:yang:ietf-network-inventory-sw-ext
     Registrant Contact: The IESG.
     XML: N/A, the requested URI is an XML namespace.

This document registers a YANG module in the "YANG Module Names" registry[RFC7950] .

     name:         ietf-network-inventory-sw-ext
     namespace:    urn:ietf:params:xml:ns:yang:ietf-network-inventory-sw-ext
     prefix:       nis
     maintained by IANA: N
     reference:    RFC xxxx

8. Acknowledgements


9. References

9.1. Normative References

Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, DOI 10.17487/RFC2119, , <>.
Mealling, M., "The IETF XML Registry", BCP 81, RFC 3688, DOI 10.17487/RFC3688, , <>.
Enns, R., Ed., Bjorklund, M., Ed., Schoenwaelder, J., Ed., and A. Bierman, Ed., "Network Configuration Protocol (NETCONF)", RFC 6241, DOI 10.17487/RFC6241, , <>.
Wasserman, M., "Using the NETCONF Protocol over Secure Shell (SSH)", RFC 6242, DOI 10.17487/RFC6242, , <>.
Schoenwaelder, J., Ed., "Common YANG Data Types", RFC 6991, DOI 10.17487/RFC6991, , <>.
Bjorklund, M., Ed., "The YANG 1.1 Data Modeling Language", RFC 7950, DOI 10.17487/RFC7950, , <>.
Bierman, A., Bjorklund, M., and K. Watsen, "RESTCONF Protocol", RFC 8040, DOI 10.17487/RFC8040, , <>.
Leiba, B., "Ambiguity of Uppercase vs Lowercase in RFC 2119 Key Words", BCP 14, RFC 8174, DOI 10.17487/RFC8174, , <>.
Bierman, A. and M. Bjorklund, "Network Configuration Access Control Model", STD 91, RFC 8341, DOI 10.17487/RFC8341, , <>.
Bjorklund, M., Schoenwaelder, J., Shafer, P., Watsen, K., and R. Wilton, "Network Management Datastore Architecture (NMDA)", RFC 8342, DOI 10.17487/RFC8342, , <>.
Rescorla, E., "The Transport Layer Security (TLS) Protocol Version 1.3", RFC 8446, DOI 10.17487/RFC8446, , <>.

9.2. Informative References

Bjorklund, M. and L. Berger, Ed., "YANG Tree Diagrams", BCP 215, RFC 8340, DOI 10.17487/RFC8340, , <>.

Authors' Addresses

Bo Wu
101 Software Avenue, Yuhua District
Jiangsu, 210012
Cheng Zhou
China Mobile
Qin Wu
101 Software Avenue, Yuhua District
Jiangsu, 210012
Mohamed Boucadair
Rennes 35000