Application-Layer Traffic Optimization (ALTO) Server Discovery
The goal of Application-Layer Traffic Optimization (ALTO) is to provide guidance to applications that have to select one or several hosts from a set of candidates capable of providing a desired resource. ALTO is realized by a client-server protocol. Before an ALTO client can ask for guidance, it needs to discover one or more ALTO servers. This document specifies a procedure for resource-consumer-i…
Applications using the Internet already have access to some topology information of Internet Service Provider (ISP) networks. For example, views to Internet routing tables at Looking Glass servers are available and can be practically downloaded to many network application clients. What is missing is knowledge of the underlying network topologies from the point of view of ISPs. In other words, what…
DHCPv6 is not specific about handling messages with unknown types. This memo describes the problems associated with receiving DHCPv6 messages with unknown types, and defines how a DHCPv6 server, client, or relay agent should behave when receiving unknown DHCPv6 messages. This document also provides advice for authors of future documents that define new messages to be sent from DHCP servers to DHCP…
The IETF has had a long tradition of doing its technical work through a consensus process, taking into account the different views among IETF participants and coming to (at least rough) consensus on technical matters. In particular, the IETF is supposed not to be run by a "majority rule" philosophy. This is why we engage in rituals like "humming" instead of voting. However, more and more of our ac…
Authentication-Results Registration for S/MIME Signature Verification
RFC 7001 specifies the Authentication-Results header field for conveying results of message authentication checks. This document defines a new authentication method to be used in the Authentication- Results header field for S/MIME-related signature checks.
IANA Guidance for Managing the Unidirectional Lightweight Encapsulation (ULE) Next-Header Registry
This document updates RFC 4326 to clarify and update the allocation rules for the Unidirectional Lightweight Encapsulation (ULE) Next- Header registry. This registry is used by ULE and Generic Stream Encapsulation (GSE) to record the code points of Extension Headers and protocols supported by these encapsulation protocols.
An Acceptable Use Policy for New ICMP Types and Codes
In this document we provide a basic description of ICMP's role in the IP stack and some guidelines for future use. This document is motivated by concerns about lack of clarity concerning when to add new Internet Control Message Protocol (ICMP) types and/or codes. These concerns have highlighted a need to describe policies for when adding new features to ICMP is desirable and when it is not.
Extending an IPv6 /64 Prefix from a Third Generation Partnership Project (3GPP) Mobile Interface to a LAN Link
This document describes requirements for extending an IPv6 /64 prefix from a User Equipment Third Generation Partnership Project (3GPP) radio interface to a LAN link and describes two implementation examples.
An Overview of Operations, Administration, and Maintenance (OAM) Tools
Operations, Administration, and Maintenance (OAM) is a general term that refers to a toolset for fault detection and isolation, and for performance measurement. Over the years, various OAM tools have been defined for various layers in the protocol stack. This document summarizes some of the OAM tools defined in the IETF in the context of IP unicast, MPLS, MPLS Transport Profile (MPLS-TP), pseudowi…
Inter-Chassis Communication Protocol for Layer 2 Virtual Private Network (L2VPN) Provider Edge (PE) Redundancy
This document specifies an Inter-Chassis Communication Protocol (ICCP) that enables Provider Edge (PE) device redundancy for Virtual Private Wire Service (VPWS) and Virtual Private LAN Service (VPLS) applications. The protocol runs within a set of two or more PEs, forming a Redundancy Group, for the purpose of synchronizing data among the systems. It accommodates multi-chassis attachment circuit r…
Allocating and Retiring Special-Purpose MPLS Labels
Some MPLS labels have been allocated for specific purposes. A block of labels (0-15) has been set aside to this end; these labels are commonly called "reserved labels". They will be called "special-purpose labels" in this document. As there are only 16 of these special-purpose labels, caution is needed in the allocation of new special-purpose labels; yet, at the same time, forward progress should …
NTP format timestamps are used by several RTP protocols for synchronisation and statistical measurements. This memo specifies Session Description Protocol (SDP) signalling that identifies timestamp reference clock sources and SDP signalling that identifies the media clock sources in a multimedia session.
Inter-Destination Media Synchronization (IDMS) Using the RTP Control Protocol (RTCP)
This document defines a new RTP Control Protocol (RTCP) Packet Type and an RTCP Extended Report (XR) Block Type to be used for achieving Inter-Destination Media Synchronization (IDMS). IDMS is the process of synchronizing playout across multiple media receivers. Using the RTCP XR IDMS Report Block defined in this document, media playout information from participants in a synchronization group can …
MPLS Transport Profile (MPLS-TP) Linear Protection to Match the Operational Expectations of Synchronous Digital Hierarchy, Optical Transport Network, and Ethernet Transport Network Operators
This document describes alternate mechanisms to perform some of the functions of MPLS Transport Profile (MPLS-TP) linear protection defined in RFC 6378, and also defines additional mechanisms. The purpose of these alternate and additional mechanisms is to provide operator control and experience that more closely models the behavior of linear protection seen in other transport networks. This docume…
Cisco-Specific Information Elements Reused in IP Flow Information Export (IPFIX)
This document describes some additional IP Flow Information Export (IPFIX) Information Elements in the range of 1-127, which is the range compatible with field types used by NetFlow version 9 in RFC 3954, as specified in the IPFIX Information Model in RFC 7012.
This document summarizes NAT64 function deployment scenarios and operational experience. Both NAT64 Carrier-Grade NAT (NAT64-CGN) and NAT64 server Front End (NAT64-FE) are considered in this document.
RFC 3580 provides guidelines for the use of the Remote Authentication Dial-In User Service (RADIUS) within IEEE 802 local area networks (LANs). This document defines additional attributes for use within IEEE 802 networks and clarifies the usage of the EAP-Key-Name Attribute and the Called-Station-Id Attribute. This document updates RFCs 3580 and 4072.
RFC 5254 describes the service provider requirements for extending the reach of pseudowires (PWs) across multiple Packet Switched Network domains. A multi-segment PW is defined as a set of two or more contiguous PW segments that behave and function as a single point-to-point PW. This document describes extensions to the PW control protocol to dynamically place the segments of the multi-segment pse…
RTP Control Protocol (RTCP) Extended Report (XR) Blocks for Mean Opinion Score (MOS) Metric Reporting
This document defines an RTP Control Protocol (RTCP) Extended Report (XR) Block including two new segment types and associated Session Description Protocol (SDP) parameters that allow the reporting of mean opinion score (MOS) Metrics for use in a range of RTP applications.
This specification defines "jCal", a JSON format for iCalendar data. The iCalendar data format is a text format for capturing and exchanging information normally stored within a calendaring and scheduling application, for example, tasks and events. JSON is a lightweight, text-based, language-independent data interchange format commonly used in Internet applications.
An Extension to the REsource LOcation And Discovery (RELOAD) Protocol to Support Relay Peer Routing
This document defines an optional extension to the REsource LOcation And Discovery (RELOAD) protocol to support the relay peer routing mode. RELOAD recommends symmetric recursive routing for routing messages. The new optional extension provides a shorter route for responses, thereby reducing overhead on intermediate peers. This document also describes potential cases where this extension can be us…
An Extension to the REsource LOcation And Discovery (RELOAD) Protocol to Support Direct Response Routing
This document defines an optional extension to the REsource LOcation And Discovery (RELOAD) protocol to support the direct response routing mode. RELOAD recommends symmetric recursive routing for routing messages. The new optional extension provides a shorter route for responses, thereby reducing overhead on intermediate peers. This document also describes potential cases where this extension can …
This memo discusses the requirements for specifications that enable telepresence interoperability by describing behaviors and protocols for Controlling Multiple Streams for Telepresence (CLUE). In addition, the problem statement and related definitions are also covered herein.
Offer/Answer Considerations for G723 Annex A and G729 Annex B
This document provides the offer/answer considerations for the annexa parameter of G723 and the annexb parameter of G729, G729D, and G729E when the value of the annexa or annexb parameter does not match in the Session Description Protocol (SDP) offer and answer.
GMPLS RSVP-TE Extensions for Operations, Administration, and Maintenance (OAM) Configuration
Operations, Administration, and Maintenance (OAM) is an integral part of transport connections; hence, it is required that OAM functions be activated/deactivated in sync with connection commissioning/ decommissioning, in order to avoid spurious alarms and ensure consistent operation. In certain technologies, OAM entities are inherently established once the connection is set up, while other technol…
This document defines a header field that enables the author of an email or netnews message to include a Jabber ID in the message header block for the purpose of associating the author with a particular Extensible Messaging and Presence Protocol (XMPP) address.
Virtual Private LAN Service (VPLS) Management Information Base
This memo defines a portion of the Management Information Base (MIB) for use with network management protocols in the Internet community. In particular, it describes managed objects to configure and/or monitor Virtual Private LAN services. It needs to be used in conjunction with the Pseudowire (PW) Management Information Base (PW-STD-MIB from RFC 5601).