RFC Abstracts

RFC7794 - IS-IS Prefix Attributes for Extended IPv4 and IPv6 Reachability
This document introduces new sub-TLVs to support advertisement of IPv4 and IPv6 prefix attribute flags and the source router ID of the router that originated a prefix advertisement.
RFC7793 - Adding Prefixes to the IPv4 Locally-Served DNS Zones Registry
RFC 6598 specifies that "Reverse DNS queries for Shared Address Space addresses [] MUST NOT be forwarded to the global DNS infrastructure."
RFC7792 - RSVP-TE Signaling Extensions in Support of Flexi-Grid Dense Wavelength Division Multiplexing (DWDM) Networks
This memo describes the extensions to the Resource Reservation Protocol - Traffic Engineering (RSVP-TE) signaling protocol to support Label Switched Paths (LSPs) in a GMPLS-controlled network that includes devices using the flexible optical grid.
RFC7791 - Cloning the IKE Security Association in the Internet Key Exchange Protocol Version 2 (IKEv2)
This document considers a VPN end user establishing an IPsec Security Association (SA) with a Security Gateway using the Internet Key Exchange Protocol version 2 (IKEv2), where at least one of the peers has multiple interfaces or where Security Gateway is a cluster with each node having its own IP address.
RFC7790 - Mapping Characters for Classes of the Preparation, Enforcement, and Comparison of Internationalized Strings (PRECIS)
The framework for the preparation, enforcement, and comparison of internationalized strings (PRECIS) defines several classes of strings for use in application protocols. Because many protocols perform case-sensitive or case-insensitive string comparison, it is necessary to define methods for case mapping. In addition, both the Internationalized Domain Names in Applications (IDNA) and the PRECIS problem statement describe mappings for internationalized strings that are not limited to case, but include width mapping and mapping of delimiters and other special characters that can be taken into consideration. This document provides guidelines for designers of PRECIS profiles and describes several mappings that can be applied between receiving user input and passing permitted code points to internationalized protocols. In particular, this document describes both locale-dependent and context-depending case mappings as well as additional mappings for delimiters and special characters.
RFC7789 - Impact of BGP Filtering on Inter-Domain Routing Policies
This document describes how unexpected traffic flows can emerge across an autonomous system as the result of other autonomous systems filtering or restricting the propagation of more-specific prefixes. We provide a review of the techniques to detect the occurrence of this issue and defend against it.
RFC7788 - Home Networking Control Protocol
This document describes the Home Networking Control Protocol (HNCP), an extensible configuration protocol, and a set of requirements for home network devices. HNCP is described as a profile of and extension to the Distributed Node Consensus Protocol (DNCP). HNCP enables discovery of network borders, automated configuration of addresses, name resolution, service discovery, and the use of any routing protocol that supports routing based on both the source and destination address.
RFC7787 - Distributed Node Consensus Protocol
This document describes the Distributed Node Consensus Protocol (DNCP), a generic state synchronization protocol that uses the Trickle algorithm and hash trees. DNCP is an abstract protocol and must be combined with a specific profile to make a complete implementable protocol.
RFC7786 - TCP Modifications for Congestion Exposure (ConEx)
Congestion Exposure (ConEx) is a mechanism by which senders inform the network about expected congestion based on congestion feedback from previous packets in the same flow. This document describes the necessary modifications to use ConEx with the Transmission Control Protocol (TCP).
RFC7785 - Recommendations for Prefix Binding in the Context of Softwire Dual-Stack Lite
This document discusses issues induced by the change of the Dual- Stack Lite (DS-Lite) Basic Bridging BroadBand (B4) IPv6 address and sketches a set of recommendations to solve those issues.
RFC7784 - Transparent Interconnection of Lots of Links (TRILL) Operations, Administration, and Maintenance (OAM) MIB
This document specifies the MIB for the OAM (Operations, Administration, and Maintenance) objects for IETF TRILL (Transparent Interconnection of Lots of Links).
RFC7783 - Coordinated Multicast Trees (CMT) for Transparent Interconnection of Lots of Links (TRILL)
TRILL (Transparent Interconnection of Lots of Links) facilitates loop-free connectivity to non-TRILL networks via a choice of an Appointed Forwarder for a set of VLANs. Appointed Forwarders provide VLAN-based load sharing with an active-standby model. High-performance applications require an active-active load-sharing model. The active-active load-sharing model can be accomplished by representing any given non-TRILL network with a single virtual RBridge (also referred to as a virtual Routing Bridge or virtual TRILL switch). Virtual representation of the non-TRILL network with a single RBridge poses serious challenges in multi-destination RPF (Reverse Path Forwarding) check calculations. This document specifies required enhancements to build Coordinated Multicast Trees (CMT) within the TRILL campus to solve related RPF issues. CMT, which only requires a software upgrade, provides flexibility to RBridges in selecting a desired path of association to a given TRILL multi-destination distribution tree. This document updates RFC 6325.
RFC7782 - Transparent Interconnection of Lots of Links (TRILL) Active-Active Edge Using Multiple MAC Attachments
TRILL (Transparent Interconnection of Lots of Links) active-active service provides end stations with flow-level load balance and resilience against link failures at the edge of TRILL campuses, as described in RFC 7379.
RFC7781 - Transparent Interconnection of Lots of Links (TRILL): Pseudo-Nickname for Active-Active Access
The IETF TRILL (Transparent Interconnection of Lots of Links) protocol provides support for flow-level multipathing for both unicast and multi-destination traffic in networks with arbitrary topology. Active-active access at the TRILL edge is the extension of these characteristics to end stations that are multiply connected to a TRILL campus as discussed in RFC 7379. In this document, the edge RBridge (Routing Bridge, or TRILL switch) group providing active-active access to such an end station is represented as a virtual RBridge. Based on the concept of the virtual RBridge, along with its pseudo-nickname, this document specifies a method for TRILL active-active access by such end stations.
RFC7780 - Transparent Interconnection of Lots of Links (TRILL): Clarifications, Corrections, and Updates
Since the publication of the TRILL (Transparent Interconnection of Lots of Links) base protocol in 2011, active development and deployment of TRILL have revealed errata in RFC 6325 and areas that could use clarifications or updates. RFC 7177, RFC 7357, and an intended replacement of RFC 6439 provide clarifications and updates with respect to adjacency, the TRILL ESADI (End Station Address Distribution Information) protocol, and Appointed Forwarders, respectively. This document provides other known clarifications, corrections, and updates. It obsoletes RFC 7180 (the previous "TRILL clarifications, corrections, and updates" RFC), and it updates RFCs 6325, 7177, and 7179.
RFC7779 - Directional Airtime Metric Based on Packet Sequence Numbers for Optimized Link State Routing Version 2 (OLSRv2)
This document specifies a Directional Airtime (DAT) link metric for usage in Optimized Link State Routing version 2 (OLSRv2).
RFC7778 - Mobile Communication Congestion Exposure Scenario
This memo describes a mobile communications use case for congestion exposure (ConEx) with a particular focus on those mobile communication networks that are architecturally similar to the 3GPP Evolved Packet System (EPS). This memo provides a brief overview of the architecture of these networks (both access and core networks) and current QoS mechanisms and then discusses how congestion exposure concepts could be applied. Based on this discussion, this memo suggests a set of requirements for ConEx mechanisms that particularly apply to these mobile networks.
RFC7777 - Advertising Node Administrative Tags in OSPF
This document describes an extension to the OSPF protocol to add an optional operational capability that allows tagging and grouping of the nodes in an OSPF domain. This allows simplification, ease of management and control over route and path selection based on configured policies. This document describes an extension to the OSPF protocol to advertise node administrative tags. The node tags can be used to express and apply locally defined network policies, which are a very useful operational capability. Node tags may be used by either OSPF itself or other applications consuming information propagated via OSPF.
RFC7776 - IETF Anti-Harassment Procedures
IETF Participants must not engage in harassment while at IETF meetings, virtual meetings, or social events or while participating in mailing lists. This document lays out procedures for managing and enforcing this policy.
RFC7775 - IS-IS Route Preference for Extended IP and IPv6 Reachability
In existing specifications, the route preferences for IPv4/IPv6 Extended Reachability TLVs are not explicitly stated. There are also inconsistencies in the definition of how the up/down bit applies to route preference when the prefix advertisement appears in Level 2 Link State Protocol Data Units (LSPs). This document addresses these issues.
RFC7774 - Multicast Protocol for Low-Power and Lossy Networks (MPL) Parameter Configuration Option for DHCPv6
This document defines a way to configure a parameter set for MPL (Multicast Protocol for Low-Power and Lossy Networks) via a DHCPv6 option. MPL has a set of parameters to control its behavior, and the parameter set is often configured as a network-wide parameter because the parameter set should be identical for each MPL Forwarder in an MPL Domain. Using the MPL Parameter Configuration Option defined in this document, a network can easily be configured with a single set of MPL parameters.
RFC7773 - Authentication Context Certificate Extension
This document defines an extension to X.509 certificates. The extension defined in this document holds data about how the certificate subject was authenticated by the Certification Authority that issued the certificate in which this extension appears.
RFC7772 - Reducing Energy Consumption of Router Advertisements
Frequent Router Advertisement messages can severely impact host power consumption. This document recommends operational practices to avoid such impact.
RFC7771 - Switching Provider Edge (S-PE) Protection for MPLS and MPLS Transport Profile (MPLS-TP) Static Multi-Segment Pseudowires
In MPLS and MPLS Transport Profile (MPLS-TP) environments, statically provisioned Single-Segment Pseudowires (SS-PWs) are protected against tunnel failure via MPLS-level and MPLS-TP-level tunnel protection. With statically provisioned Multi-Segment Pseudowires (MS-PWs), each segment of the MS-PW is likewise protected from tunnel failures via MPLS-level and MPLS-TP-level tunnel protection. However, static MS-PWs are not protected end-to-end against failure of one of the Switching Provider Edge Routers (S-PEs) along the path of the MS-PW. This document describes how to achieve this protection via redundant MS-PWs by updating the existing procedures in RFC 6870. It also contains an optional approach based on MPLS-TP Linear Protection.
RFC7770 - Extensions to OSPF for Advertising Optional Router Capabilities
It is useful for routers in an OSPFv2 or OSPFv3 routing domain to know the capabilities of their neighbors and other routers in the routing domain. This document proposes extensions to OSPFv2 and OSPFv3 for advertising optional router capabilities. The Router Information (RI) Link State Advertisement (LSA) is defined for this purpose. In OSPFv2, the RI LSA will be implemented with an Opaque LSA type ID. In OSPFv3, the RI LSA will be implemented with a unique LSA type function code. In both protocols, the RI LSA can be advertised at any of the defined flooding scopes (link, area, or autonomous system (AS)). This document obsoletes RFC 4970 by providing a revised specification that includes support for advertisement of multiple instances of the RI LSA and a TLV for functional capabilities.
RFC7769 - Media Access Control (MAC) Address Withdrawal over Static Pseudowire
This document specifies a mechanism to signal Media Access Control (MAC) address withdrawal notification using a pseudowire (PW) Associated Channel (ACH). Such notification is useful when statically provisioned PWs are deployed in a Virtual Private LAN Service (VPLS) or Hierarchical Virtual Private LAN Service (H-VPLS) environment.
RFC7768 - Port Management to Reduce Logging in Large-Scale NATs
Various IPv6 transition strategies require the introduction of large- scale NATs (e.g., AFTR and NAT64) to share the limited supply of IPv4 addresses available in the network until transition is complete. There has recently been debate over how to manage the sharing of ports between different subscribers sharing the same IPv4 address. One factor in the discussion is the operational requirement to log the assignment of transport addresses to subscribers. It has been argued that dynamic assignment of individual ports between subscribers requires the generation of an excessive volume of logs. This document suggests a way to achieve dynamic port sharing while keeping log volumes low.
RFC7767 - Application-Initiated Check-Pointing via the Port Control Protocol (PCP)
This document specifies a mechanism for a host to indicate via the Port Control Protocol (PCP) which connections should be protected against network failures. These connections will then be subject to high-availability mechanisms enabled on the network side.
RFC7766 - DNS Transport over TCP - Implementation Requirements
This document specifies the requirement for support of TCP as a transport protocol for DNS implementations and provides guidelines towards DNS-over-TCP performance on par with that of DNS-over-UDP. This document obsoletes RFC 5966 and therefore updates RFC 1035 and RFC 1123.
RFC7765 - TCP and Stream Control Transmission Protocol (SCTP) RTO Restart
This document describes a modified sender-side algorithm for managing the TCP and Stream Control Transmission Protocol (SCTP) retransmission timers that provides faster loss recovery when there is a small amount of outstanding data for a connection. The modification, RTO Restart (RTOR), allows the transport to restart its retransmission timer using a smaller timeout duration, so that the effective retransmission timeout (RTO) becomes more aggressive in situations where fast retransmit cannot be used. This enables faster loss detection and recovery for connections that are short lived or application limited.
RFC7764 - Guidance on Markdown: Design Philosophies, Stability Strategies, and Select Registrations
This document elaborates upon the text/markdown media type for use with Markdown, a family of plain-text formatting syntaxes that optionally can be converted to formal markup languages such as HTML. Background information, local storage strategies, and additional syntax registrations are supplied.
RFC7763 - The text/markdown Media Type
This document registers the text/markdown media type for use with Markdown, a family of plain-text formatting syntaxes that optionally can be converted to formal markup languages such as HTML.
RFC7762 - Initial Assignment for the Content Security Policy Directives Registry
This document establishes an Internet Assigned Number Authority (IANA) registry for Content Security Policy directives and populates that registry with the directives defined in the Content Security Policy Level 2 specification.
RFC7761 - Protocol Independent Multicast - Sparse Mode (PIM-SM): Protocol Specification (Revised)
This document specifies Protocol Independent Multicast - Sparse Mode (PIM-SM). PIM-SM is a multicast routing protocol that can use the underlying unicast routing information base or a separate multicast-capable routing information base. It builds unidirectional shared trees rooted at a Rendezvous Point (RP) per group, and it optionally creates shortest-path trees per source.
RFC7760 - Statement of Work for Extensions to the IETF Datatracker for Author Statistics
This is the Statement of Work (SOW) for extensions to the IETF Datatracker to provide statistics about RFCs and Internet-Drafts and their authors.
RFC7759 - Configuration of Proactive Operations, Administration, and Maintenance (OAM) Functions for MPLS-Based Transport Networks Using Label Switched Path (LSP) Ping
This specification describes the configuration of proactive MPLS-TP Operations, Administration, and Maintenance (OAM) functions for a given Label Switched Path (LSP) using a set of TLVs that are carried by the LSP Ping protocol.
RFC7758 - Time Capability in NETCONF
This document defines a capability-based extension to the Network Configuration Protocol (NETCONF) that allows time-triggered configuration and management operations. This extension allows NETCONF clients to invoke configuration updates according to scheduled times and allows NETCONF servers to attach timestamps to the data they send to NETCONF clients.
RFC7757 - Explicit Address Mappings for Stateless IP/ICMP Translation
This document extends the Stateless IP/ICMP Translation Algorithm (SIIT) with an Explicit Address Mapping (EAM) algorithm and formally updates RFC 6145. The EAM algorithm facilitates stateless IP/ICMP translation between arbitrary (non-IPv4-translatable) IPv6 endpoints and IPv4.
RFC7756 - Stateless IP/ICMP Translation for IPv6 Internet Data Center Environments (SIIT-DC): Dual Translation Mode
This document describes an extension of the Stateless IP/ICMP Translation for IPv6 Internet Data Center Environments (SIIT-DC) architecture, which allows applications, protocols, or nodes that are incompatible with IPv6 and/or Network Address Translation to operate correctly with SIIT-DC. This is accomplished by introducing a new component called an SIIT-DC Edge Relay, which reverses the translations made by an SIIT-DC Border Relay. The application and/or node is thus provided with seemingly native IPv4 connectivity that provides end-to-end address transparency.
RFC7755 - SIIT-DC: Stateless IP/ICMP Translation for IPv6 Data Center Environments
This document describes the use of the Stateless IP/ICMP Translation Algorithm (SIIT) in an IPv6 Internet Data Center (IDC). In this deployment model, traffic from legacy IPv4-only clients on the Internet is translated to IPv6 upon reaching the IDC operator's network infrastructure. From that point on, it may be treated the same as traffic from native IPv6 end users. The IPv6 endpoints may be numbered using arbitrary (non-IPv4-translatable) IPv6 addresses. This facilitates a single-stack IPv6-only network infrastructure, as well as efficient utilization of public IPv4 addresses.
RFC7754 - Technical Considerations for Internet Service Blocking and Filtering
The Internet is structured to be an open communications medium. This openness is one of the key underpinnings of Internet innovation, but it can also allow communications that may be viewed as undesirable by certain parties. Thus, as the Internet has grown, so have mechanisms to limit the extent and impact of abusive or objectionable communications. Recently, there has been an increasing emphasis on "blocking" and "filtering", the active prevention of such communications. This document examines several technical approaches to Internet blocking and filtering in terms of their alignment with the overall Internet architecture. When it is possible to do so, the approach to blocking and filtering that is most coherent with the Internet architecture is to inform endpoints about potentially undesirable services, so that the communicants can avoid engaging in abusive or objectionable communications. We observe that certain filtering and blocking approaches can cause unintended consequences to third parties, and we discuss the limits of efficacy of various approaches.
RFC7753 - Port Control Protocol (PCP) Extension for Port-Set Allocation
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.
RFC7752 - North-Bound Distribution of Link-State and Traffic Engineering (TE) Information Using BGP
In a number of environments, a component external to a network is called upon to perform computations based on the network topology and current state of the connections within the network, including Traffic Engineering (TE) information. This is information typically distributed by IGP routing protocols within the network.
RFC7751 - Kerberos Authorization Data Container Authenticated by Multiple Message Authentication Codes (MACs)
This document specifies a Kerberos authorization data container that supersedes AD-KDC-ISSUED. It allows for multiple Message Authentication Codes (MACs) or signatures to authenticate the contained authorization data elements. The multiple MACs are needed to mitigate shortcomings in the existing AD-KDC-ISSUED container. This document updates RFC 4120.
RFC7750 - Differentiated Service Code Point and Explicit Congestion Notification Monitoring in the Two-Way Active Measurement Protocol (TWAMP)
This document describes an optional extension for Two-Way Active Measurement Protocol (TWAMP) allowing the monitoring of the Differentiated Service Code Point and Explicit Congestion Notification fields with the TWAMP-Test protocol.
RFC7749 - The "xml2rfc" Version 2 Vocabulary
This document defines the "xml2rfc" version 2 vocabulary: an XML-based language used for writing RFCs and Internet-Drafts.
RFC7748 - Elliptic Curves for Security
This memo specifies two elliptic curves over prime fields that offer a high level of practical security in cryptographic applications, including Transport Layer Security (TLS). These curves are intended to operate at the ~128-bit and ~224-bit security level, respectively, and are generated deterministically based on a list of required properties.
RFC7747 - Basic BGP Convergence Benchmarking Methodology for Data-Plane Convergence
BGP is widely deployed and used by several service providers as the default inter-AS (Autonomous System) routing protocol. It is of utmost importance to ensure that when a BGP peer or a downstream link of a BGP peer fails, the alternate paths are rapidly used and routes via these alternate paths are installed. This document provides the basic BGP benchmarking methodology using existing BGP convergence terminology as defined in RFC 4098.
RFC7746 - Label Switched Path (LSP) Self-Ping
When certain RSVP-TE optimizations are implemented, ingress Label Switching Router (LSRs) can receive RSVP RESV messages before forwarding state has been installed on all downstream nodes. According to the RSVP-TE specification, the ingress LSR can forward traffic through a Label Switched Path (LSP) as soon as it receives a RESV message. However, if the ingress LSR forwards traffic through the LSP before forwarding state has been installed on all downstream nodes, traffic can be lost.
RFC7745 - XML Schemas for Reverse DNS Management
This document defines an Extensible Markup Language (XML) schema for reverse DNS management in a tightly controlled Representational State Transfer (REST) environment. This document describes a schema that has been developed and deployed by ICANN in a "RESTful" system since 2011 and is being used by the registries responsible for reverse DNS (rDNS) delegations underneath IN-ADDR.ARPA and IP6.ARPA through an HTTPS transaction that is mediated by an X.509 certificate.