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The Scalable Address Resolution Protocol (SARP) for Large Data Centers (RFC7586) Disclosure Number: IPCOM000242177D
Original Publication Date: 2015-Jun-01
Included in the Prior Art Database: 2015-Jun-23
Document File: 42 page(s) / 45K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

Y. Nachum: AUTHOR [+3]


This document describes a proxy gateway technique, called the Scalable Address Resolution Protocol (SARP), which reduces switches' Filtering Database (FDB) size and ARP/Neighbor Discovery impact on network elements in an environment where hosts within one subnet (or VLAN) can spread over various access domains in data centers.

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Independent Submission                                         Y. Nachum Request for Comments: 7586 Category: Experimental                                         L. Dunbar ISSN: 2070-1721                                                   Huawei                                                            I. Yerushalmi                                                               T. Mizrahi                                                                  Marvell                                                                June 2015

             The Scalable Address Resolution Protocol (SARP)                          for Large Data Centers


   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.

Independent Submissions Editor Note

   This is an Experimental document; that experiment will end two years    after the RFC is published.  At that point, the RFC authors will    attempt to determine how widely SARP has been implemented and used.


   The IESG notes that the problems described in RFC 6820 can already be    addressed through the simple combination of existing standardized or    other published techniques including Layer 2 VPN (RFC 4664), proxy    ARP (RFC 925), proxy Neighbor Discovery (RFC 4389), IGMP and MLD    snooping (RFC 4541), and ARP mediation for IP interworking of Layer 2    VPNs (RFC 6575).

 Nachum, et al.                Experimental                      [Page 1]
 RFC 7586                          SARP                         June 2015

 Status of This Memo

   This document is not an Internet Standards Track specification; it is    published for examination, experimental implementation, and    evaluation.

   This document defines an Experimental Protocol for the Internet    community.  This is a contribution to the RFC Series, independently    of any other RFC stream.  The RFC Editor has chosen to publish this    doc...