Mobile ip Overview Chuan-Ming liu Computer Science and Information Engineering National Taipei University of Technology Spring 04
Mobile IP – Overview Chuan-Ming Liu Computer Science and Information Engineering National Taipei University of Technology Spring ‘04
Mobile ip discussion overview o Will coⅴer: o Why IP routing breaks under mobility o Mobile ipva basics o Some low-level protocol details(message formats, headers, etc.) o Lots more detail in the specifications(see RFC)
Mobile IP Discussion Overview Will cover: ⚫ Why IP routing breaks under mobility ⚫ Mobile IPv4 basics ⚫ Some low-level protocol details (message formats, headers, etc.) Lots more detail in the specifications (see RFC)
Why Mobile Ip? o Laptop computing o Wireless technologies o Mobility v.S. Portability o Making mobility transparent to applications
Why Mobile IP? Laptop Computing Wireless Technologies Mobility v.s. Portability Making mobility transparent to applications
IP Addresses o Two parts Routing prefix(determined by the netmask) network on which the address resides Host number host on the network 32 bits routing prefix host number
IP Addresses Two parts: ⚫ Routing prefix (determined by the netmask) network on which the address resides ⚫ Host number host on the network routing prefix host number 32 bits
Two-level Addressing o Applications use ip addresses to identify routes by which datagrams may be exchanged between network nodes o applications also use ip addresses to find the endpoints o The delivery of packets consists of o Routing to the destination network o Sending to the host
Two-level Addressing Applications use IP addresses to identify routes by which datagrams may be exchanged between network nodes Applications also use IP addresses to find the endpoints The delivery of packets consists of ⚫ Routing to the destination network ⚫ Sending to the host