Patent ID: 7426202

Claim:
In a communication system for communicating with a plurality of mobile nodes, the system having a plurality of home agents, the plurality of home agents managing Internet Protocol (IP) addresses in multiple address pools, the multiple pools having overlapping IP addresses and each pool being associated with a unique home agent IP address, a method comprising: in a foreign agent, receiving a plurality of data packets from the plurality of home agents, each packet containing an IP address of the respective home agent, wherein at least one data packet destined for a given mobile node has the same assigned home IP address as at least one other mobile node; in the foreign agent, using a combination of the assigned home IP address of the given mobile node and the IP address of a home agent to identify a unique point-to-point protocol (PPP) link for the given mobile node; and in the foreign agent, routing the at least one data packet destined for the given mobile node to the given mobile node using the unique PPP link.