Cellular IP
n Operation:
„CIP Nodes“ maintain routing
entries (soft state) for MNs
Multiple entries possible
Routing entries updated based on
packets sent by MN
n CIP Gateway:
Mobile IP tunnel endpoint
Initial registration processing
n Security provisions:
all CIP Nodes share
„network key“
MN key: MD5(net key, IP addr)
MN gets key upon registration
Internet
Mobile IP
CIP Gateway
BS
BS
BS
packets from
MN2 to MN 1
MN1
MN2