user should never notice access link changes. In this context, mobility can mean changing from
one subnet to another on an Ethernet network or making a telephone call in the car while
passing from one cell site to another. Mobility can even mean moving from a high-speed
Ethernet network at an office desk to a WLAN connection in a conference room. Regardless,
all mobility solutions must be capable of locating a device and delivering traffic to that device.
Specifically, a mobility solution must address the following four requirements:
•Location discovery
•Move detection
•Update signaling
•Path (re)establishment ...
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