RFC Abstracts

RFC7164 - RTP and Leap Seconds
This document discusses issues that arise when RTP sessions span Coordinated Universal Time (UTC) leap seconds. It updates RFC 3550 by describing how RTP senders and receivers should behave in the presence of leap seconds.
RFC7163 - URN for Country-Specific Emergency Services
This document updates the registration guidance provided in Section 4.2 of RFC 5031, which allows the registration of service URNs with the 'sos' service type only for emergency services "that are offered widely and in different countries". This document updates those instructions to allow such registrations when, at the time of registration, those services are offered in only one country.
RFC7162 - IMAP Extensions: Quick Flag Changes Resynchronization (CONDSTORE) and Quick Mailbox Resynchronization (QRESYNC)
Often, multiple IMAP (RFC 3501) clients need to coordinate changes to a common IMAP mailbox. Examples include different clients working on behalf of the same user and multiple users accessing shared mailboxes. These clients need a mechanism to efficiently synchronize state changes for messages within the mailbox.
RFC7161 - Proxy Mobile IPv6 (PMIPv6) Multicast Handover Optimization by the Subscription Information Acquisition through the LMA (SIAL)
This document specifies an experimental multicast handover optimization mechanism for Proxy Mobile IPv6 (PMIPv6) to accelerate the delivery of multicast traffic to mobile nodes after handovers. The mechanism, called Subscription Information Acquisition through the LMA (SIAL), is based on speeding up the acquisition of mobile nodes' multicast context by the mobile access gateways. To do that, extensions to the current PMIPv6 protocol are proposed. These extensions are not only applicable to the base solution for multicast support in Proxy Mobile IPv6, but they can also be applied to other solutions developed to avoid the tunnel convergence problem. Furthermore, these extensions are also independent of the role played by the mobile access gateway within the multicast network (acting as either multicast listener discovery proxy or multicast router).
RFC7160 - Support for Multiple Clock Rates in an RTP Session
This document clarifies the RTP specification regarding the use of different clock rates in an RTP session. It also provides guidance on how legacy RTP implementations that use multiple clock rates can interoperate with RTP implementations that use the algorithm described in this document. It updates RFC 3550.
RFC7159 - The JavaScript Object Notation (JSON) Data Interchange Format
JavaScript Object Notation (JSON) is a lightweight, text-based, language-independent data interchange format. It was derived from the ECMAScript Programming Language Standard. JSON defines a small set of formatting rules for the portable representation of structured data.
RFC7158 - The JavaScript Object Notation (JSON) Data Interchange Format
JavaScript Object Notation (JSON) is a lightweight, text-based, language-independent data interchange format. It was derived from the ECMAScript Programming Language Standard. JSON defines a small set of formatting rules for the portable representation of structured data.
RFC7157 - IPv6 Multihoming without Network Address Translation
Network Address and Port Translation (NAPT) works well for conserving global addresses and addressing multihoming requirements because an IPv4 NAPT router implements three functions: source address selection, next-hop resolution, and (optionally) DNS resolution. For IPv6 hosts, one approach could be the use of IPv6-to-IPv6 Network Prefix Translation (NPTv6). However, NAT and NPTv6 should be avoided, if at all possible, to permit transparent end-to-end connectivity. In this document, we analyze the use cases of multihoming. We also describe functional requirements and possible solutions for multihoming without the use of NAT in IPv6 for hosts and small IPv6 networks that would otherwise be unable to meet minimum IPv6-allocation criteria. We conclude that DHCPv6-based solutions are suitable to solve the multihoming issues described in this document, but NPTv6 may be required as an intermediate solution.
RFC7156 - Diameter Support for Proxy Mobile IPv6 Localized Routing
In Proxy Mobile IPv6, packets received from a Mobile Node (MN) by the Mobile Access Gateway (MAG) to which it is attached are typically tunneled to a Local Mobility Anchor (LMA) for routing. The term "localized routing" refers to a method by which packets are routed directly between an MN's MAG and the MAG of its Correspondent Node (CN) without involving any LMA. In a Proxy Mobile IPv6 deployment, it may be desirable to control the establishment of localized routing sessions between two MAGs in a Proxy Mobile IPv6 domain by requiring that the session be authorized. This document specifies how to accomplish this using the Diameter protocol.
RFC7155 - Diameter Network Access Server Application
This document describes the Diameter protocol application used for Authentication, Authorization, and Accounting services in the Network Access Server (NAS) environment; it obsoletes RFC 4005. When combined with the Diameter Base protocol, Transport Profile, and Extensible Authentication Protocol specifications, this application specification satisfies typical network access services requirements.
RFC7154 - IETF Guidelines for Conduct
This document provides a set of guidelines for personal interaction in the Internet Engineering Task Force. The guidelines recognize the diversity of IETF participants, emphasize the value of mutual respect, and stress the broad applicability of our work.
RFC7153 - IANA Registries for BGP Extended Communities
This document reorganizes the IANA registries for the type values and sub-type values of the BGP Extended Communities attribute and the BGP IPv6-Address-Specific Extended Communities attribute. This is done in order to remove interdependencies among the registries, thus making it easier for IANA to determine which codepoints are available for assignment in which registries. This document also clarifies the information that must be provided to IANA when requesting an allocation from one or more of these registries. These changes are compatible with the existing allocations and thus do not affect protocol implementations. The changes will, however, impact the "IANA Considerations" sections of future protocol specifications. This document updates RFC 4360 and RFC 5701.
RFC7152 - Requirements for Metro Ethernet Forum (MEF) Ethernet-Tree (E-Tree) Support in Layer 2 Virtual Private Network (L2VPN)
This document provides functional requirements for the support of Metro Ethernet Forum (MEF) Ethernet Tree (E-Tree) in multipoint Layer 2 Virtual Private Network solutions (referred to as simply "L2VPN"). It is intended that potential solutions will use these requirements as guidelines.
RFC7151 - File Transfer Protocol HOST Command for Virtual Hosts
The File Transfer Protocol, as defined in RFC 959, does not provide a way for FTP clients and servers to differentiate between multiple DNS names that are registered for a single IP address. This document defines a new FTP command that provides a mechanism for FTP clients and servers to identify individual virtual hosts on an FTP server.
RFC7150 - Conveying Vendor-Specific Constraints in the Path Computation Element Communication Protocol
The Path Computation Element Communication Protocol (PCEP) is used to convey path computation requests and responses both between Path Computation Clients (PCCs) and Path Computation Elements (PCEs) and between cooperating PCEs. In PCEP, the path computation requests carry details of the constraints and objective functions that the PCC wishes the PCE to apply in its computation.
RFC7149 - Software-Defined Networking: A Perspective from within a Service Provider Environment
Software-Defined Networking (SDN) has been one of the major buzz words of the networking industry for the past couple of years. And yet, no clear definition of what SDN actually covers has been broadly admitted so far. This document aims to clarify the SDN landscape by providing a perspective on requirements, issues, and other considerations about SDN, as seen from within a service provider environment.
RFC7148 - Prefix Delegation Support for Proxy Mobile IPv6
This specification defines extensions to the Proxy Mobile IPv6 protocol for allowing a mobile router in a Proxy Mobile IPv6 domain to obtain IP prefixes for its attached mobile networks using DHCPv6 prefix delegation. Network-based mobility management support is provided for those delegated IP prefixes just as it is provided for the mobile node's home address. Even if the mobile router performs a handoff and changes its network point of attachment, mobility support is ensured for all the delegated IP prefixes and for all the IP nodes in the mobile network that use IP address configuration from those delegated IP prefixes.
RFC7147 - Definitions of Managed Objects for the Internet Small Computer System Interface (iSCSI)
This document defines a portion of the Management Information Base (MIB) for use with network management protocols. In particular, it defines objects for managing a client using the Internet Small Computer System Interface (iSCSI) protocol (SCSI over TCP).
RFC7146 - Securing Block Storage Protocols over IP: RFC 3723 Requirements Update for IPsec v3
RFC 3723 specifies IPsec requirements for block storage protocols over IP (e.g., Internet Small Computer System Interface (iSCSI)) based on IPsec v2 (RFC 2401 and related RFCs); those requirements have subsequently been applied to remote direct data placement protocols, e.g., the Remote Direct Memory Access Protocol (RDMAP). This document updates RFC 3723's IPsec requirements to IPsec v3 (RFC 4301 and related RFCs) and makes some changes to required algorithms based on developments in cryptography since RFC 3723 was published.
RFC7145 - Internet Small Computer System Interface (iSCSI) Extensions for the Remote Direct Memory Access (RDMA) Specification
Internet Small Computer System Interface (iSCSI) Extensions for Remote Direct Memory Access (RDMA) provides the RDMA data transfer capability to iSCSI by layering iSCSI on top of an RDMA-Capable Protocol. An RDMA-Capable Protocol provides RDMA Read and Write services, which enable data to be transferred directly into SCSI I/O Buffers without intermediate data copies. This document describes the extensions to the iSCSI protocol to support RDMA services as provided by an RDMA-Capable Protocol.
RFC7144 - Internet Small Computer System Interface (iSCSI) SCSI Features Update
Internet Small Computer System Interface (iSCSI) is a SCSI transport protocol that maps the SCSI family of protocols onto TCP/IP. The iSCSI protocol as specified in RFC 7143 (and as previously specified by the combination of RFC 3720 and RFC 5048) is based on the SAM-2 (SCSI Architecture Model - 2) version of the SCSI family of protocols. This document defines enhancements to the iSCSI protocol to support certain additional features of the SCSI protocol that were defined in SAM-3, SAM-4, and SAM-5.
RFC7143 - Internet Small Computer System Interface (iSCSI) Protocol (Consolidated)
This document describes a transport protocol for SCSI that works on top of TCP. The iSCSI protocol aims to be fully compliant with the standardized SCSI Architecture Model (SAM-2). RFC 3720 defined the original iSCSI protocol. RFC 3721 discusses iSCSI naming examples and discovery techniques. Subsequently, RFC 3980 added an additional naming format to the iSCSI protocol. RFC 4850 followed up by adding a new public extension key to iSCSI. RFC 5048 offered a number of clarifications as well as a few improvements and corrections to the original iSCSI protocol.
RFC7142 - Reclassification of RFC 1142 to Historic
This memo reclassifies RFC 1142, "OSI IS-IS Intra-domain Routing Protocol", to Historic status. This memo also obsoletes RFC 1142.
RFC7141 - Byte and Packet Congestion Notification
This document provides recommendations of best current practice for dropping or marking packets using any active queue management (AQM) algorithm, including Random Early Detection (RED), BLUE, Pre- Congestion Notification (PCN), and newer schemes such as CoDel (Controlled Delay) and PIE (Proportional Integral controller Enhanced). We give three strong recommendations: (1) packet size should be taken into account when transports detect and respond to congestion indications, (2) packet size should not be taken into account when network equipment creates congestion signals (marking, dropping), and therefore (3) in the specific case of RED, the byte- mode packet drop variant that drops fewer small packets should not be used. This memo updates RFC 2309 to deprecate deliberate preferential treatment of small packets in AQM algorithms.
RFC7140 - LDP Extensions for Hub and Spoke Multipoint Label Switched Path
This document introduces a hub and spoke multipoint (HSMP) Label Switched Path (LSP), which allows traffic from root to leaf through point-to-multipoint (P2MP) LSPs and also leaf to root along the reverse path. That means traffic entering the HSMP LSP from the application/customer at the root node travels downstream to each leaf node, exactly as if it were traveling downstream along a P2MP LSP to each leaf node. Upstream traffic entering the HSMP LSP at any leaf node travels upstream along the tree to the root, as if it were unicast to the root. Direct communication among the leaf nodes is not allowed.
RFC7139 - GMPLS Signaling Extensions for Control of Evolving G.709 Optical Transport Networks
ITU-T Recommendation G.709 [G709-2012] introduced new Optical channel Data Unit (ODU) containers (ODU0, ODU4, ODU2e, and ODUflex) and enhanced Optical Transport Network (OTN) flexibility.
RFC7138 - Traffic Engineering Extensions to OSPF for GMPLS Control of Evolving G.709 Optical Transport Networks
This document describes Open Shortest Path First - Traffic Engineering (OSPF-TE) routing protocol extensions to support GMPLS control of Optical Transport Networks (OTNs) specified in ITU-T Recommendation G.709 as published in 2012. It extends mechanisms defined in RFC 4203.
RFC7137 - Use of the OSPF-MANET Interface in Single-Hop Broadcast Networks
This document describes the use of the OSPF-MANET interface in single-hop broadcast networks. It includes a mechanism to dynamically determine the presence of such a network and specific operational considerations due to its nature.
RFC7136 - Significance of IPv6 Interface Identifiers
The IPv6 addressing architecture includes a unicast interface identifier that is used in the creation of many IPv6 addresses. Interface identifiers are formed by a variety of methods. This document clarifies that the bits in an interface identifier have no meaning and that the entire identifier should be treated as an opaque value. In particular, RFC 4291 defines a method by which the Universal and Group bits of an IEEE link-layer address are mapped into an IPv6 unicast interface identifier. This document clarifies that those two bits are significant only in the process of deriving interface identifiers from an IEEE link-layer address, and it updates RFC 4291 accordingly.
RFC7135 - Registering a SIP Resource Priority Header Field Namespace for Local Emergency Communications
This document creates the new Session Initiation Protocol (SIP) Resource Priority header field namespace 'esnet' and registers this namespace with IANA. The new header field namespace allows for local emergency session establishment to a public safety answering point (PSAP), between PSAPs, and between a PSAP and first responders and their organizations.
RFC7134 - The Management Policy of the Resource Priority Header (RPH) Registry Changed to "IETF Review"
RFC 4412 defines the "Resource-Priority Namespaces" and "Resource-Priority Priority-values" registries. The management policy of these registries is "Standards Action". This document normatively updates RFC 4412 to change the management policy of these registries to "IETF Review".
RFC7133 - Information Elements for Data Link Layer Traffic Measurement
This document describes Information Elements related to the data link layer. They are used by the IP Flow Information Export (IPFIX) protocol for encoding measured data link layer traffic information.
RFC7132 - Threat Model for BGP Path Security
This document describes a threat model for the context in which External Border Gateway Protocol (EBGP) path security mechanisms will be developed. The threat model includes an analysis of the Resource Public Key Infrastructure (RPKI) and focuses on the ability of an Autonomous System (AS) to verify the authenticity of the AS path info received in a BGP update. We use the term "PATHSEC" to refer to any BGP path security technology that makes use of the RPKI. PATHSEC will secure BGP, consistent with the inter-AS security focus of the RPKI.
RFC7131 - Session Initiation Protocol (SIP) History-Info Header Call Flow Examples
This document describes use cases and documents call flows that require the History-Info header field to capture the Request-URIs as a Session Initiation Protocol (SIP) Request is retargeted. The use cases are described along with the corresponding call flow diagrams and messaging details.
RFC7130 - Bidirectional Forwarding Detection (BFD) on Link Aggregation Group (LAG) Interfaces
This document defines a mechanism to run Bidirectional Forwarding Detection (BFD) on Link Aggregation Group (LAG) interfaces. It does so by running an independent Asynchronous mode BFD session on every LAG member link.
RFC7129 - Authenticated Denial of Existence in the DNS
Authenticated denial of existence allows a resolver to validate that a certain domain name does not exist. It is also used to signal that a domain name exists but does not have the specific resource record (RR) type you were asking for. When returning a negative DNS Security Extensions (DNSSEC) response, a name server usually includes up to two NSEC records. With NSEC version 3 (NSEC3), this amount is three.
RFC7128 - Resource Public Key Infrastructure (RPKI) Router Implementation Report
This document is an implementation report for the Resource Public Key Infrastructure (RPKI) Router protocol as defined in RFC 6810. The authors did not verify the accuracy of the information provided by respondents. The respondents are experts with the implementations they reported on, and their responses are considered authoritative for the implementations for which their responses represent. The respondents were asked to only use the "YES" answer if the feature had at least been tested in the lab.
RFC7127 - Characterization of Proposed Standards
RFC 2026 describes the review performed by the Internet Engineering Steering Group (IESG) on IETF Proposed Standard RFCs and characterizes the maturity level of those documents. This document updates RFC 2026 by providing a current and more accurate characterization of Proposed Standards.
RFC7126 - Recommendations on Filtering of IPv4 Packets Containing IPv4 Options
This document provides advice on the filtering of IPv4 packets based on the IPv4 options they contain. Additionally, it discusses the operational and interoperability implications of dropping packets based on the IP options they contain.
RFC7125 - Revision of the tcpControlBits IP Flow Information Export (IPFIX) Information Element
This document revises the tcpControlBits IP Flow Information Export (IPFIX) Information Element as originally defined in RFC 5102 to reflect changes to the TCP Flags header field since RFC 793.
RFC7124 - Ethernet in the First Mile Copper (EFMCu) Interfaces MIB
This document updates RFC 5066. It amends that specification by informing the Internet community about the transition of the EFM-CU-MIB module from the concluded IETF Ethernet Interfaces and Hub MIB Working Group to the Institute of Electrical and Electronics Engineers (IEEE) 802.3 working group.
RFC7123 - Security Implications of IPv6 on IPv4 Networks
This document discusses the security implications of native IPv6 support and IPv6 transition/coexistence technologies on "IPv4-only" networks and describes possible mitigations for the aforementioned issues.
RFC7122 - Datagram Convergence Layers for the Delay- and Disruption-Tolerant Networking (DTN) Bundle Protocol and Licklider Transmission Protocol (LTP)
This document specifies the preferred method for transporting Delay- and Disruption-Tolerant Networking (DTN) protocol data over the Internet using datagrams. It covers convergence layers for the Bundle Protocol (RFC 5050), as well as the transportation of segments using the Licklider Transmission Protocol (LTP) (RFC 5326). UDP and the Datagram Congestion Control Protocol (DCCP) are the candidate datagram protocols discussed. UDP can only be used on a local network or in cases where the DTN node implements explicit congestion control. DCCP addresses the congestion control problem, and its use is recommended whenever possible. This document is a product of the Delay-Tolerant Networking Research Group (DTNRG) and represents the consensus of the DTNRG.
RFC7121 - High Availability within a Forwarding and Control Element Separation (ForCES) Network Element
This document discusses Control Element (CE) High Availability (HA) within a Forwarding and Control Element Separation (ForCES) Network Element (NE). Additionally, this document updates RFC 5810 by providing new normative text for the Cold Standby High Availability mechanism.
RFC7120 - Early IANA Allocation of Standards Track Code Points
This memo describes the process for early allocation of code points by IANA from registries for which "Specification Required", "RFC Required", "IETF Review", or "Standards Action" policies apply. This process can be used to alleviate the problem where code point allocation is needed to facilitate desired or required implementation and deployment experience prior to publication of an RFC, which would normally trigger code point allocation. The procedures in this document are intended to apply only to IETF Stream documents.
RFC7119 - Operation of the IP Flow Information Export (IPFIX) Protocol on IPFIX Mediators
This document specifies the operation of the IP Flow Information Export (IPFIX) protocol specific to IPFIX Mediators, including Template and Observation Point management, timing considerations, and other Mediator-specific concerns.
RFC7118 - The WebSocket Protocol as a Transport for the Session Initiation Protocol (SIP)
The WebSocket protocol enables two-way real-time communication between clients and servers in web-based applications. This document specifies a WebSocket subprotocol as a reliable transport mechanism between Session Initiation Protocol (SIP) entities to enable use of SIP in web-oriented deployments.
RFC7117 - Multicast in Virtual Private LAN Service (VPLS)
RFCs 4761 and 4762 describe a solution for Virtual Private LAN Service (VPLS) multicast that relies on the use of point-to-point or multipoint-to-point unicast Label Switched Paths (LSPs) for carrying multicast traffic. This solution has certain limitations for certain VPLS multicast traffic profiles. For example, it may result in highly non-optimal bandwidth utilization when a large amount of multicast traffic is to be transported.
RFC7116 - Licklider Transmission Protocol (LTP), Compressed Bundle Header Encoding (CBHE), and Bundle Protocol IANA Registries
The DTNRG Research Group has defined the experimental Licklider Transmission Protocol (LTP) and the Compressed Bundle Header Encoding (CBHE) mechanism for the InterPlanetary Network ('ipn' URI scheme). Moreover, RFC 5050 defines values for the Bundle Protocol administrative record type. All of these fields are subject to a registry. For the purpose of its research work, the group has created ad hoc registries. As the specifications are stable and have multiple interoperable implementations, the group would like to hand off the registries to IANA for official management. This document describes the necessary IANA actions.
RFC7115 - Origin Validation Operation Based on the Resource Public Key Infrastructure (RPKI)
Deployment of BGP origin validation that is based on the Resource Public Key Infrastructure (RPKI) has many operational considerations. This document attempts to collect and present those that are most critical. It is expected to evolve as RPKI-based origin validation continues to be deployed and the dynamics are better understood.