NETCONF Call Home and RESTCONF Call Home
RFC 8071
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Type |
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RFC - Proposed Standard
(February 2017; No errata)
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Last updated |
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2017-02-22
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Replaces |
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draft-ietf-netconf-reverse-ssh
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IETF
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plain text
pdf
html
bibtex
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Reviews |
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WG state
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Submitted to IESG for Publication
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Document shepherd |
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Mahesh Jethanandani
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Shepherd write-up |
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Show
(last changed 2015-09-18)
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| IESG |
IESG state |
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RFC 8071 (Proposed Standard)
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Consensus Boilerplate |
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Yes
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Telechat date |
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Responsible AD |
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Benoît Claise
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Send notices to |
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(None)
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| IANA |
IANA review state |
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Version Changed - Review Needed
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IANA action state |
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RFC-Ed-Ack
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Internet Engineering Task Force (IETF) K. Watsen
Request for Comments: 8071 Juniper Networks
Category: Standards Track February 2017
ISSN: 2070-1721
NETCONF Call Home and RESTCONF Call Home
Abstract
This RFC presents NETCONF Call Home and RESTCONF Call Home, which
enable a NETCONF or RESTCONF server to initiate a secure connection
to a NETCONF or RESTCONF client, respectively.
Status of This Memo
This is an Internet Standards Track document.
This document is a product of the Internet Engineering Task Force
(IETF). It represents the consensus of the IETF community. It has
received public review and has been approved for publication by the
Internet Engineering Steering Group (IESG). Further information on
Internet Standards is available in Section 2 of RFC 7841.
Information about the current status of this document, any errata,
and how to provide feedback on it may be obtained at
http://www.rfc-editor.org/info/rfc8071.
Copyright Notice
Copyright (c) 2017 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
the Trust Legal Provisions and are provided without warranty as
described in the Simplified BSD License.
Watsen Standards Track [Page 1]
RFC 8071 NETCONF Call Home and RESTCONF Call Home February 2017
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
1.1. Motivation . . . . . . . . . . . . . . . . . . . . . . . 3
1.2. Requirements Terminology . . . . . . . . . . . . . . . . 3
1.3. Applicability Statement . . . . . . . . . . . . . . . . . 4
1.4. Relation to RFC 4253 . . . . . . . . . . . . . . . . . . 4
1.5. The NETCONF/RESTCONF Convention . . . . . . . . . . . . . 4
2. Solution Overview . . . . . . . . . . . . . . . . . . . . . . 5
3. The NETCONF or RESTCONF Client . . . . . . . . . . . . . . . 5
3.1. Client Protocol Operation . . . . . . . . . . . . . . . . 5
3.2. Client Configuration Data Model . . . . . . . . . . . . . 7
4. The NETCONF or RESTCONF Server . . . . . . . . . . . . . . . 7
4.1. Server Protocol Operation . . . . . . . . . . . . . . . . 7
4.2. Server Configuration Data Model . . . . . . . . . . . . . 8
5. Security Considerations . . . . . . . . . . . . . . . . . . . 9
6. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 10
7. References . . . . . . . . . . . . . . . . . . . . . . . . . 11
7.1. Normative References . . . . . . . . . . . . . . . . . . 11
7.2. Informative References . . . . . . . . . . . . . . . . . 12
Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . . 13
Author's Address . . . . . . . . . . . . . . . . . . . . . . . . 13
1. Introduction
This RFC presents NETCONF Call Home and RESTCONF Call Home, which
enable a NETCONF or RESTCONF server to initiate a secure connection
to a NETCONF or RESTCONF client, respectively.
NETCONF Call Home supports both of the secure transports used by the
Network Configuration Protocol (NETCONF) [RFC6241], Secure Shell
(SSH), and Transport Layer Security (TLS). The NETCONF protocol's
binding to SSH is defined in [RFC6242]. The NETCONF protocol's
binding to TLS is defined in [RFC7589].
RESTCONF Call Home only supports TLS, the same as the RESTCONF
protocol [RFC8040]. The RESTCONF protocol's binding to TLS is
defined in [RFC8040].
The SSH protocol is defined in [RFC4253]. The TLS protocol is
defined in [RFC5246]. Both the SSH and TLS protocols are layered on
top of the TCP protocol, which is defined in [RFC793].
Both NETCONF Call Home and RESTCONF Call Home preserve all but one of
the client/server roles in their respective protocol stacks, as
compared to client-initiated NETCONF and RESTCONF connections. The
one and only role reversal that occurs is at the TCP layer; that is,
which peer is the TCP client and which is the TCP server.
Watsen Standards Track [Page 2]
RFC 8071 NETCONF Call Home and RESTCONF Call Home February 2017
For example, a network element is traditionally the TCP server.
However, when calling home, the network element initially assumes the
role of the TCP client. The network element's secure transport-layer
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