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A Framework for QoS Support in Mobile IP v6

A Framework for QoS Support in Mobile IP v6. draft-chaskar-mobileip-qos-00.txt 49 th IETF, San Diego December 15, 2000. Hemant Chaskar Rajeev Koodli. Problem Statement. Mobile IP so far Correct and efficient routing of packets QoS support not addressed (yet)!

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A Framework for QoS Support in Mobile IP v6

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  1. A Framework for QoS Support in Mobile IP v6 draft-chaskar-mobileip-qos-00.txt 49th IETF, San Diego December 15, 2000 Hemant Chaskar Rajeev Koodli

  2. Problem Statement • Mobile IP so far • Correct and efficient routing of packets • QoS support not addressed (yet)! • Re-programming forwarding treatment in intermediate network domains subsequent to handover • Proposal • Perform QoS signaling along with Mobile IP signaling

  3. Solution Overview • Introduction of QoS Object as an IPv6 extension header option • Inclusion of QoS Object with Binding Messages

  4. QoS Object Option (1/2) • Describes QoS requirement and traffic volume of MN's packet streams • A QoS Object corresponds to one unidirectional packet stream of MN

  5. Composition of QoS Object QoS Requirement (Traffic Class) Average Data Rate (32 Bit IEEE Flt. Pt.) Token Bucket (32 Bit IEEE Flt. Pt.) Peak Data Rate (32 Bit IEEE Flt. Pt.) Traffic Volume Minimum Policed Unit (32 Bit Integer) Maximum Packet Size (32 Bit Integer) Packet Classification Parameters Multi-Field (MF) Packet Classifier

  6. Inclusion of QoS Object with Binding Messages • QoS Object is included as Hop-by-Hop Option • With BU for traffic from MN to CN • With BA for traffic from CN to MN • With BA for traffic from HA to MN • QoS Object is processed at theedges of QoS-enabled network domains (DiffServ, MPLS, IntServ) and transported transparently through the network domains

  7. QoS Object Processing • MPLS Domain: Mapping to FEC, forward BU over LSP • DiffServ Domain: Program MF packet classifier, may consult bandwidth broker, core routers ignore QoS Object • IntServ Domain: Initiate RSVP within the network domain

  8. Security Considerations • Denial of Service Attacks • Caused by sending QoS Object too frequently • Prevented by ignoring QoS Object if it arrives before a fixed time interval • CoA Spoofing • Demanding QoS by spoofing CoA • AR should prevent CoA spoofing on the access link • ERs should employ ingress filtering • No man-in-middle between two routers

  9. Possible Optimizations • Micro-mobility • The proposed framework works seamlessly

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