| 摘要 |
For optimized IP-routing the invention discloses a home agent and method for transfer of an IP packet over a path from a sender (CN) over a radio access network (RAN, HA, FA 11 ) to a mobile host (MS 2 ), wherein, when a home agent (HA) receives an incoming data packet determined for a mobile host (MS 2 ) with a destination address (MS 2 -address 137.21.16.5 ), the home agent (HA) examines if there is a match between the destination address (MS 2 -address: 137.21.16.5 ) of the packet and a subnetwork address (FA 11 -address: 137.21.16.0 ) of a foreign agent (FA 11 ) stored in a list of subnetwork addresses ( 137.21.16.0; 137.22.25.0 ) stored in a list at the home agent (HA), wherein, if there is a match between the destination address (MS 2 -address: 137.21.16.5 ) and a subnetwork address (FA 11 -address: 137.21.16.0 ) of a foreign agent, the home agent examines whether a preconfigured path from the home agent (HA) to this foreign agent exists and wherein the home agent (HA) sends the packet to this foreign agent (FA 11 ) on this preconfigured label switched path ( 37 ) if a label switched path ( 37 ) to this foreign agent exists. |
