Address Resolution for Massive numbers of hosts in the Data center

Document Charter Address Resolution for Massive numbers of hosts in the Data center WG (armd)
Title Address Resolution for Massive numbers of hosts in the Data center
Last updated 2011-03-21
State Approved
WG State Concluded
IESG Responsible AD Ron Bonica
Charter Edit AD (None)
Send notices to (None)


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