An experimental system of IP{sup}2 mobility management was designed and implemented in order to examine feasibility of the protocol and find the bottlenecks. From the results of feasibiltiy tests, it was confirmed that there was no fundamental error in the protocol sequence of the IP{sup}2 mobility management, and the protocol could interwork with other IP protocols. The experimental results of the bottleneck tests showed that some of the mobility processing tasks was affected by a large number of Mobile Node (MN) entries stored at the AR, and also the number of Correspondent Node (CN) associated with the MN could incur performance degradation of the system due to burst traffic generated between the AR and KM. However, with the conditions with practical number of MN and CN entries, there was no serious concern identified with system performance. The U-plane bottleneck results showed that there was no overhead created by the IP{sup}2 specific processing at the AR in terms of packet forwarding delay.
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