Issue# 2-Gateway Discovery

["Abdallah Rayhan" <arayhan@xxxxxxxxxxxxxxxxxx>]

Issue# 2-Gateway Discovery

Based on Issue#1,

    1-What is the purpose of the gateway discovery?
      In other words, which policy issue should the
      gateway discovery help to resolve?

    2-What are we discovering? gateway IP address?
      and/or credentials?, policy domains?

    3-What else to discover during this phase?

    4-During the course of discovery, who should
      learn the topology? The initiator? All gateways
      the discovery message traverses? Border gateways?

    5-How can authentication and privacy be utilized
      to ensure that the topology information is read
      only by the intended gateways?

    6-Is discovery end-to-end (only the two endpoints
      enforcing policy should learn about each other)
      or end-to-many (one endpoint enforcing policy should
      learn about all the enforcement points along the
      path to the destination endpoint of policy)?

    7-Should the discovery signaling be direct
      signaling (the initiator discovers one gateway
      at a time) or perform Add-in discovery (one
      message traverses all gateways along the path
      and each one adds in its information to the
      end of the reply message)?

    8-Can/should policy discovery be part of the
      gateway discovery?

    9-What is the state-relationship between the gateway
      discovery and policy discovery?

   10-Who should perform the discovery, servers or
      gateways?

   11-Based on the points raised above, what is the
      model for trus-relationship among gateways and
      servers?

Comments?

Abdallah Rayhan