RFC4098 - Terminology for Benchmarking BGP Device Convergence in the Control Plane

   o  As convergence characterization is a complex process, it is
      desirable to restrict the initial focus in this set of documents
      to specifying how to take basic control-plane measurements as a
      first step in characterizing BGP convergence.

   For path-vector protocols, such as BGP, the primary initial focus
   will therefore be on network and system control-plane [RFC3654]
   activity consisting of the arrival, processing, and propagation of
   routing information.

   We note that for testing purposes, all optional parameters SHOULD be
   turned off.  All variable parameters SHOULD be at their default
   setting unless the test specifies otherwise.

   Subsequent documents will explore the more intricate aspects of
   convergence measurement, such as the impacts of the presence of
   Multiprotocol Extensions for BGP-4, policy processing, simultaneous
   traffic on the control and data paths within the Device Under Test
   (DUT), and other realistic performance modifiers.  Convergence of
   Interior Gateway Protocols (IGPs) will also be considered in separate
   documents.

1.1.  Overview and Road Map

   Characterizations of the BGP convergence performance of a device
   must-take into account all distinct stages and aspects of BGP.
   functionality.  This requires that the relevant terms and metrics be
   as specifically defined as possible.  Such definition is the goal of
   this document.

   The necessary definitions are classified into separate categories:

   o  Components and characteristics of routing information

   o  Routing data structures and route categories

   o  Descriptions of the constituent elements of a network or a router

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