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Armd Status Pages

Address Resolution for Massive numbers of hosts in the Data center (Concluded WG)
Ops Area: Robert Wilton, Warren Kumari | 2011-Mar-21 — 2012-Oct-23 

2012-06-25 charter

Address Resolution for Massive numbers of hosts in the Data center (armd)


 Current Status: Active

     Linda Dunbar <ldunbar@huawei.com>
     Benson Schliesser <bensons@queuefull.net>

 Operations and Management Area Directors:
     Ronald Bonica <rbonica@juniper.net>
     Benoit Claise <bclaise@cisco.com>

 Operations and Management Area Advisor:
     Ronald Bonica <rbonica@juniper.net>

 Mailing Lists:
     General Discussion: armd@ietf.org
     To Subscribe:       https://www.ietf.org/mailman/listinfo/armd
     Archive:            http://www.ietf.org/mail-archive/web/armd/

Description of Working Group:

    Changing workloads in datacenters are having an impact on the
    performance of current datacenter network designs.  For example, the
    use of virtual machines (VMs) as a means for deployment and
    management of new services often results in a significant increase in
    the number of hosts attached to the network.  Various requirements
    for the deployment of VMs in data center networks, such as support
    for VM mobility, has led to architectures in which broadcast domains
    are scaling up to span more switching devices and VM servers, and to
    interconnect more hosts (as represented by VMs).

    In these deployment architectures, heavily used protocols that are
    based on broadcast or multicast, such as ARP and ND, may contribute
    to poor network performance.  The armd Working Group will investigate
    the impact of changing workloads and existing protocols on datacenter
    network performance.

    In its work, the armd Working Group will take into consideration work
    done in data center networking standardization by other SDOs, such as
    the IEEE 802.1 Data Center Bridging Task Group, and will communicate
    and exchange information with these organizations.

    Working Group objectives:

    (1) Document the current practices in data center network
    architectures and the scaling characteristics of ARP and ND with
    respect to large sized layer-2 domains in data centers.

    (2) Provide operational recommendations intended to minimize issues
    associated with these architectures and characteristics.

    Area affiliation of the Working Group:

    The armd Working Group is assigned to the Operations and
    Management area, and will maintain close collaboration with the
    Internet area.  Because of its affiliation with Operations and
    Management, the armd Working Group will focus on documenting current
    practices and scaling characteristics, and will not do any protocol
    development or extension work.

    If the Working Group identifies opportunities for protocol
    development or extensions, it will first develop requirements for
    that work.  Any protocol development work will be conducted in the
    appropriate existing Working Groups if such work groups exist. If no
    such working groups exist, armd may recharter to address the work and
    may be moved to a different area.

    Deliverables (Informational RFCs; list to be removed prior to posting):
    o Problem statement and review of current L2/L3 architectures
    o Report on ARP/ND statistics collection and behavior analysis in
      various Data Center environments
    o Recommendations on data center L2/L3 architectures and
       identification of opportunities for protocol development work

Goals and Milestones:
  May 2011 - Problem statement
  Nov 2011 - ARP/ND statistics collection and behavior analysis in various Data Center environments (many subnets with various sizes; subnets with hosts with VMs and VMs migrate over time; subnets with some hosts on local VMs and others on VMs in the cloud (like Amazon's ECS); Large subnet).
  Nov 2011 - Survey of Existing Implementations
  Nov 2011 - Survey of Security
  Mar 2012 - Recommendations to avoid or minimize issues caused by ARP/ND
  Mar 2012 - Gap Analysis

All charter page changes, including changes to draft-list, rfc-list and milestones:

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