移动互联网技术-传输层移动性 苏锐丹
移动互联网技术-传输层移动性 苏锐丹
始终记住一个问题 Unknown Source IP 192.168.1.1 →X Source IP Source Port Destination IP Destination Port 192.168.1.1 1056 172.16.1.1 80 XDestination IP 10.1.1.1 does not exist Source IP Source Port Destination IP Destination Port 172.16.1.1 80 10.1.1.1 1056 Node B 172.16.1.1 Local Network A Internet Local Network B 10.1.1.0/24 172.16.0.0/24 Node A 192.168.1.1 Local Network C 192.168.1.0/24
始终记住一个问题
Inherent route optimization 口不用tunnel,开销小 口不会出现“三角路由” Inherent traversal of security elements Mobile IP ueses topologically incorrect source IP addresses on the mobile node for transmission uses topologically correct source IP addresses
◼ Inherent route optimization 不用tunnel，开销小 不会出现“三角路由” ◼ Inherent traversal of security elements Mobile IP ueses topologically incorrect source IP addresses on the mobile node for transmission uses topologically correct source IP addresses
Ability to pause transmissions during temporary disconnection Because the transport layer is aware of the mobility-induced disconnection,existing transmissions might be paused until reachability is reestablished. Ability to apply unique mobility ptimization mechanisms to different flows from the same mobile node
◼ Ability to pause transmissions during temporary disconnection Because the transport layer is aware of the mobility-induced disconnection, existing transmissions might be paused until reachability is reestablished. ◼ Ability to apply unique mobility ptimization mechanisms to different flows from the same mobile node
Congestion control mobility PathA Foreign Agent 192.168.1.254 Mobile Node A Home Address 10.1.1.1 Visited Network A CCoA192168.120 192.168.1.024 Correspondent Node 2a2级☒ Internet Local Network B Mobile Node A Home Address 10.1.1.1 Visited Network B CoA192.168.2.20 192.1682.0/24 Path B
Congestion control & mobility