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Update on RSVP Diagnostics

Update on RSVP Diagnostics. No major changes New version of spec Changed order of steps in processing of DREQ messages (first increase hop_count then send back in case of error) Added Security Considerations paragraph Graphical Diagnosis client Java Applet as a front-end

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Update on RSVP Diagnostics

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  1. Update on RSVP Diagnostics • No major changes • New version of spec • Changed order of steps in processing of DREQ messages (first increase hop_count then send back in case of error) • Added Security Considerations paragraph • Graphical Diagnosis client • Java Applet as a front-end • Back-end written in C Andreas Terzis UCLA IRL

  2. RSVP Diagnostics (cont.) • Getting around “black holes” • Send multiple requests, timeout • Do a traceroute or mtrace to find the path from LAST_HOP to sender • Use HOP_COUNT to incrementally get results • Once “black hole” found use LAST_HOP to continue DREQ from next hop towards source • Status: Working out some details, code will be available at http://irl.cs.ucla.edu Andreas Terzis UCLA IRL

  3. RSVP Tunnels-New draft version • Major cleanup and reorganization • Definitions of different tunnel types have changed. • Type 1: At least one of the endpoints does not support RSVP-Tunnels • Type 2: Configured Tunnels • Type 3: Dynamic Tunnels Andreas Terzis UCLA IRL

  4. New draft version (cont.) • SESSION_ASSOC object now carried by E2E PATH msgs • used to be carried by tunnel PATH msgs • Two cases for refreshing tunnel reservations, configured vs. dynamic sessions • Dynamic are refreshed by end-to-end RESV messages. • Configured Tunnels, state does not expire Andreas Terzis UCLA IRL

  5. Multicast Tunnels • Multicast Tunnels • Used for VPNs • What is it: One entry point multiple exit points • How do we use it: To send signaling messages and do the resource reservation • Data traffic does not go through the multicast tunnel, but through unicast tunnels • SE reservations (destination address in packet filter should be wildcard) Andreas Terzis UCLA IRL

  6. Interface Discovery • How does RSVP learn about tunnel interfaces • Ask kernel • Ask RSRR • Should we do both or one is enough??? Andreas Terzis UCLA IRL

  7. RSVP Tunnels Implementation • Completed implementation based on ISI’s RSVP • Contains tunnel management interface for creation of “configured pipes” • Available at http://irl.cs.ucla.edu • TBD: • Implement changes proposed in latest draft (SESSION_ASSOC object) • Sync up with latest RSVP release from ISI Andreas Terzis UCLA IRL

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