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mobility support

mobility support. Abdullah Alghamdi. Generic handover performance requirements. Handover rates Fast reservations: Minimize RTT during QoS establishment Handover requests treated with higher priority Minimize number of bits transmitted over “slow” links. General issues with mobility support.

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mobility support

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  1. mobility support Abdullah Alghamdi

  2. Generic handover performance requirements • Handover rates • Fast reservations: • Minimize RTT during QoS establishment • Handover requests treated with higher priority • Minimize number of bits transmitted over “slow” links

  3. General issues with mobility support • Inter-subsystem handover forces mobile node (MN) to change assigned IP address • Use an additional ID to identify NTLP transport state that does not include MN’s IP address and keeps association with flow ID(s) before and after handover

  4. Requirements for mobility in internet • Mobility • Transparency • Easy to use • Routing • Security

  5. What is IPv4? • IPv4 stands for Internet Protocol version 4. It is the underlying technology that makes it possible for us to connect our devices to the web • Without IP addresses, computers would not be able to communicate and send data to each other. It’s essential to the infrastructure of the web.

  6. Why are we running out of IPv4 addresses? • IPv4 uses 32 bits for its Internet addresses. • How does IPv6 solve this problem?

  7. Mobile IPv6 • Mobile IPv6 is intended to enable IPv6 nodes to move from one IP subnet to another • While a mobile node is away from home

  8. Basic IPv6 Address Types • unicast • multicast • anycast

  9. IPv6 – Addressing Model • Address are assigned to interfaces • Interface expected to have multiple addresses • Addresses have scope • Address have lifetime

  10. Terms used in mobile IPv6 • Mobile Node • Home Address • Care-of Address • Binding • Home Agent • Binding Cache

  11. Major Differences between MIPv4 and MIPv6 • No FA in Mobile IPv6 • Packets delivery

  12. Quality of Service • IPv6 header has two QoS-related fields • 20-bit Flow Label • 8-bit Traffic Class Indicator • New IPv6 option – QoS Object

  13. Conclusions • Mobile IPv6 is • An able and connect protocol for handling mobility with IPv6 • Lightweight protocol • To minimize the control traffic needed to effect mobility

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