ARP

This document describes the Ethernet Virtual Private Network (EVPN) Proxy ARP/ND function augmented by the capability of the ARP/ND Extended Community. From that perspective, this document updates the EVPN specification to provide more comprehensive documentation of the operation of the Proxy ARP/ND function. The EVPN Proxy ARP/ND function and the ARP/ND Extended Community help operators of Internet Exchange Points, Data Centers, and other networks deal with IPv4 and IPv6 address resolution issues associated with large Broadcast Domains by reducing and even suppressing the flooding produced by address resolution in the EVPN network.

This document defines an Extended Community that is advertised along with an Ethernet Virtual Private Network (EVPN) Media Access Control (MAC) / IP Advertisement route and carries information relevant to the Address Resolution Protocol (ARP) / Neighbor Discovery (ND) resolution so that an EVPN Provider Edge (PE) implementing a proxy-ARP/ND function in broadcast domains (BDs) or an ARP/ND function on Integrated Routing and Bridging (IRB) interfaces can reply to ARP Requests or Neighbor Solicitation (NS) messages with the correct information.

This document describes mechanisms to optimize the Address Resolution Protocol (ARP) and Neighbor Discovery (ND) traffic in a Transparent Interconnection of Lots of Links (TRILL) campus. TRILL switches maintain a cache of IP / Media Access Control (MAC) address / Data Label bindings that are learned from ARP/ND requests and responses that pass through them. In many cases, this cache allows an edge Routing Bridge (RBridge) to avoid flooding an ARP/ND request by either responding to it directly or encapsulating it and unicasting it. Such optimization reduces packet flooding over a TRILL campus.

This document introduces the Scalable Address Resolution Protocol (SARP), an architecture that uses proxy gateways to scale large data center networks. SARP is based on fast proxies that significantly reduce switches' Filtering Database (FDB) table sizes and reduce impact of ARP and Neighbor Discovery (ND) on network elements in an environment where hosts within one subnet (or VLAN) can spread over various locations. SARP is targeted for massive data centers with a significant number of Virtual Machines (VMs) that can move across various physical locations.

This memo documents some operational practices that allow ARP and Neighbor Discovery (ND) to scale in data center environments.

Edge TRILL (Transparent Interconnection of Lots of Links) switches currently learn the mapping between MAC (Media Access Control) addresses and their egress TRILL switch by observing the data packets they ingress or egress or by the TRILL ESADI (End-Station Address Distribution Information) protocol. When an ingress TRILL switch receives a data frame for a destination address (MAC&Label) that the switch does not know, the data frame is flooded within the frame's Data Label across the TRILL campus.

This document describes the framework for using directory services to assist edge TRILL switches in reducing multi-destination frames, particularly unknown unicast frames flooding, and ARP/ND (Address Resolution Protocol / Neighbor Discovery), thus improving TRILL network scalability and security.

This document examines address resolution issues related to the scaling of data centers with a very large number of hosts. The scope of this document is relatively narrow, focusing on address resolution (the Address Resolution Protocol (ARP) in IPv4 and Neighbor Discovery (ND) in IPv6) within a data center. This document is a product of the Internet Engineering Task Force (IETF).

This document defines an Address Resolution Protocol (ARP) extension to support the Identifier-Locator Network Protocol for IPv4 (ILNPv4). ILNP is an experimental, evolutionary enhancement to IP. This document is a product of the IRTF Routing Research Group. This document defines an Experimental Protocol for the Internet community.

The Virtual Private Wire Service (VPWS), detailed in RFC 4664, provides point-to-point connections between pairs of Customer Edge (CE) devices. It does so by binding two Attachment Circuits (each connecting a CE device with a Provider Edge (PE) device) to a pseudowire (connecting the two PEs). In general, the Attachment Circuits must be of the same technology (e.g., both Ethernet or both ATM), and the pseudowire must carry the frames of that technology. However, if it is known that the frames' payload consists solely of IP datagrams, it is possible to provide a point-to-point connection in which the pseudowire connects Attachment Circuits of different technologies. This requires the PEs to perform a function known as "Address Resolution Protocol (ARP) Mediation". ARP Mediation refers to the process of resolving Layer 2 addresses when different resolution protocols are used on either Attachment Circuit. The methods described in this document are applicable even when the CEs run a routing protocol between them, as long as the routing protocol runs over IP. [STANDARDS-TRACK]

This document specifies the IANA guidelines for allocating new values in the Address Resolution Protocol (ARP). This document also reserves some numbers for experimentation purposes. The changes also affect other protocols that employ values from the ARP name spaces. [STANDARDS-TRACK]

This document describes the process of binding/associating IPv4/IPv6 addresses with MPEG-2 Transport Streams (TS). This procedure is known as Address Resolution (AR) or Neighbor Discovery (ND). Such address resolution complements the higher-layer resource discovery tools that are used to advertise IP sessions.

In MPEG-2 Networks, an IP address must be associated with a Packet ID (PID) value and a specific Transmission Multiplex. This document reviews current methods appropriate to a range of technologies (such as DVB (Digital Video Broadcasting), ATSC (Advanced Television Systems Committee), DOCSIS (Data-Over-Cable Service Interface Specifications), and variants). It also describes the interaction with well-known protocols for address management including DHCP, ARP, and the ND protocol. This memo provides information for the Internet community.

This document describes a mechanism to ensure layer-2 separation of Local Area Network (LAN) stations accessing an IPv4 gateway over a bridged Ethernet segment.

The mechanism - called "MAC-Forced Forwarding" - implements an Address Resolution Protocol (ARP) proxy function that prohibits Ethernet Media Access Control (MAC) address resolution between hosts located within the same IPv4 subnet but at different customer premises, and in effect directs all upstream traffic to an IPv4 gateway. The IPv4 gateway provides IP-layer connectivity between these same hosts. This memo provides information for the Internet community.

This document specifies a method for encapsulating and transmitting IPv4/IPv6 and Address Resolution Protocol (ARP) packets over InfiniBand (IB). It describes the link-layer address to be used when resolving the IP addresses in IP over InfiniBand (IPoIB) subnets. The document also describes the mapping from IP multicast addresses to InfiniBand multicast addresses. In addition, this document defines the setup and configuration of IPoIB links. [STANDARDS-TRACK]

This document specifies the way of encapsulating IPv6, IPv4, and Address Resolution Protocol (ARP) packets over Fibre Channel. This document also specifies the method of forming IPv6 link-local addresses and statelessly autoconfigured IPv6 addresses on Fibre Channel networks, and a mechanism to perform IPv4 address resolution over Fibre Channel networks.

This document obsoletes RFC 2625 and RFC 3831. [STANDARDS-TRACK]

This document specifies a method for resolving IP addresses to ANSI High-Performance Parallel Interface (HIPPI) hardware addresses and for emulating IP broadcast in a logical IP subnet (LIS) as a direct extension of HARP (hardware addresses). This memo defines a HARP that will interoperate between HIPPI-800 and HIPPI-6400 (also known as Gigabyte System Network, GSN). This document (when combined with RFC 2067 "IP over HIPPI") obsoletes RFC 1374. [STANDARDS-TRACK]

This document further specifies a method for resolving IP addresses to HIPPI-6400 (High-Performance Parallel Interface) hardware addresses (HARP) and for emulating IP broadcast in a logical IP subnet (LIS) as a direct extension of HARP. Furthermore, it is the goal of this memo to define a IP and HARP that will allow interoperability for HIPPI-800 and HIPPI-6400 equipment both broadcast and non-broadcast capable networks. [STANDARDS-TRACK]

This document specifies how to use IEEE Std 1394-1995, Standard for a High Performance Serial Bus (and its supplements), for the transport of Internet Protocol Version 4 (IPv4) datagrams; it defines the necessary methods, data structures and codes for that purpose. [STANDARDS-TRACK]

This memo defines how ILMI-based Server Discovery, which provides a method for ATM-attached hosts and routers to dynamically determine the ATM addresses of servers, shall be used to locate ATMARP servers. [STANDARDS-TRACK]

This memo describes additions to ARP that will allow a station to request a protocol address corresponding to a given hardware address. [STANDARDS-TRACK]

This document describes methods and procedures for the graceful transition from an ATMARP LIS to an NHRP LIS network model over ATM. This memo provides information for the Internet community. It does not specify an Internet standard of any kind.

This memo defines an initial application of classical IP and ARP in an Asynchronous Transfer Mode (ATM) network environment configured as a Logical IP Subnetwork (LIS). [STANDARDS-TRACK]

The purpose of this memo is to define the Management Information Base (MIB) for supporting Classical IP and ARP over ATM as specified in Classical IP and ARP over ATM. [STANDARDS-TRACK]

ANSI Standard X3.218-1993 (HIPPI-LE[3]) defines the encapsulation of IEEE 802.2 LLC PDUs and, by implication, IP on HIPPI. This memo is a revision of RFC 1374, "IP and ARP on HIPPI", and is intended to replace it in the Standards Track. [STANDARDS-TRACK]

This memo describes extensions to the Reverse Address Resolution Protocol (RARP [2]) and called Dynamic RARP (DRARP, pronounced D-RARP). This memo provides information for the Internet community. This memo does not define an Internet standard of any kind.

This document specifies a trivial modification to the ARP mechanism, not the packet format, which allows a node to announce that it is leaving the network and that all other nodes should modify their ARP tables accordingly. This memo defines an Experimental Protocol for the Internet community.

This document describes the NBMA Address Resolution Protocol (NARP). NARP can be used by a source terminal (host or router) connected to a Non-Broadcast, Multi-Access link layer (NBMA) network to find out the NBMA addresses of the a destination terminal provided that the destination terminal is connected to the same NBMA network. This memo defines an Experimental Protocol for the Internet community. This memo does not specify an Internet standard of any kind.

This memo discusses alternative approaches to extending the Internet architecture to eliminate some or all unnecessary hops. This memo provides information for the Internet community. This memo does not specify an Internet standard of any kind.

Directed ARP is a dynamic address resolution procedure that enables hosts and routers to resolve advertised potential next-hop IP addresses on foreign IP networks to their associated link level addresses. This memo defines an Experimental Protocol for the Internet community.

This memo defines a method of encapsulating the Internet Protocol (IP) datagrams and Address Resolution Protocol (ARP) requests and replies on Fiber Distributed Data Interface (FDDI) Networks. [STANDARDS-TRACK]

This memo defines a protocol for the transmission of IP and ARP packets over the ARCnet Local Area Network.This memo specifies a method of encapsulating Internet Protocol (IP) and Address Resolution Protocol (ARP) datagrams for transmission across ARCNET using the "ARCNET Packet Header Definition Standard". [STANDARDS-TRACK]

This memo discusses an extension to a Bridge Protocol to detect and disclose changes in heighbouring host address parameters in a Multi-Lan system of Ethernets. The problem is one which is appearing more and more regularly as the interconnected systems grow larger on Campuses and in Commercial Institutions. This RFC suggests a protocol enhancement for the Internet community, and requests discussion and suggestions for improvements.

This RFC describes the use of the Address Resolution Protocol (ARP) by subnet gateways to permit hosts on the connected subnets to communicate without being aware of the existence of subnets, using the technique of "Proxy ARP".

The problem of treating a set of local area networks (LANs) as one Internet network has generated some interest and concern. It is inappropriate to give each LAN within an site a distinct Internet network number. It is desirable to hide the details of the interconnections between the LANs within an site from people, gateways, and hosts outside the site. The question arises on how to best do this, and even how to do it at all. In RFC-917 Jeffery Mogul makes a case for the use of "explicit subnets" in a multi-LAN environment. The explicit subnet scheme is a call to recursively apply the mechanisms the Internet uses to manage networks to the problem of managing LANs within one network. In this note I urge another approach: the use of "transparent subnets" supported by a multi-LAN extension of the Address Resolution Protocol. This RFC suggests a proposed protocol for the ARPA-Internet community, and requests discussion and suggestions for improvements.

This RFC suggests a method for workstations to dynamically find their protocol address (e.g., their Internet Address), when they know only their hardware address (e.g., their attached physical network address). This RFC specifies a proposed protocol for the ARPA Internet community, and requests discussion and suggestions for improvements.

The purpose of this RFC is to present a method of Converting Protocol Addresses (e.g., IP addresses) to Local Network Addresses (e.g., Ethernet addresses). This is an issue of general concern in the ARPA Internet Community at this time. The method proposed here is presented for your consideration and comment. This is not the specification of an Internet Standard.