Port Control Protocol (PCP) Extension for Port-Set Allocation
RFC 7753
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Type |
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RFC - Proposed Standard
(February 2016; No errata)
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Last updated |
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2016-02-04
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Replaces |
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draft-boucadair-pcp-rtp-rtcp
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Stream |
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IETF
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Formats |
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plain text
pdf
html
bibtex
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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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Reinaldo Penno
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Shepherd write-up |
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Show
(last changed 2015-08-25)
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| IESG |
IESG state |
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RFC 7753 (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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Brian Haberman
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Send notices to |
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(None)
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| IANA |
IANA review state |
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IANA OK - Actions Needed
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IANA action state |
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RFC-Ed-Ack
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Internet Engineering Task Force (IETF) Q. Sun
Request for Comments: 7753 China Telecom
Category: Standards Track M. Boucadair
ISSN: 2070-1721 France Telecom
S. Sivakumar
Cisco Systems
C. Zhou
Huawei Technologies
T. Tsou
Philips Lighting
S. Perreault
Jive Communications
February 2016
Port Control Protocol (PCP) Extension for Port-Set Allocation
Abstract
In some use cases, e.g., Lightweight 4over6, the client may require
not just one port, but a port set. This document defines an
extension to the Port Control Protocol (PCP) that allows clients to
manipulate a set of ports as a whole. This is accomplished using a
new MAP option: PORT_SET.
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 5741.
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/rfc7753.
Sun, et al. Standards Track [Page 1]
RFC 7753 PCP PORT_SET February 2016
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
the Trust Legal Provisions and are provided without warranty as
described in the Simplified BSD License.
Sun, et al. Standards Track [Page 2]
RFC 7753 PCP PORT_SET February 2016
Table of Contents
1. Introduction ....................................................4
1.1. Applications Using Port Sets ...............................4
1.2. Lightweight 4over6 .........................................4
1.3. Firewall Control ...........................................4
1.4. Discovering Stateless Port-Set Mappings ....................5
2. The Need for PORT_SET ...........................................5
3. Terminology .....................................................6
4. The PORT_SET Option .............................................6
4.1. Client Behavior ............................................8
4.2. Server Behavior ............................................8
4.3. Absence of Capability Discovery ............................9
4.4. Port-Set Renewal and Deletion .............................10
4.4.1. Overlap Conditions .................................10
5. Examples .......................................................10
5.1. Simple Request on Network Address Translator
IPv4/IPv4 (NAT44) .........................................10
5.2. Stateless Mapping Discovery ...............................12
5.3. Resolving Overlap .........................................13
6. Operational Considerations .....................................13
6.1. Limits and Quotas .........................................13
6.2. High Availability .........................................13
6.3. Idempotence ...............................................13
6.4. What should a PCP client do when it receives fewer
ports than requested? .....................................15
7. Security Considerations ........................................15
8. IANA Considerations ............................................16
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