Thomas Kunz
Systems and Computer Engineering
33
Cellular IP
nOperation:
–„CIP Nodes“ maintain routing entries (soft state) for MNs
–Multiple entries possible
–Routing entries updated based on packets sent by MN
nCIP Gateway:
–Mobile IP tunnel endpoint
–Initial registration processing
nSecurity provisions:
–all CIP Nodes share
„network key“
–MN key: MD5(net key, IP addr)
–MN gets key upon registration
–
CIP Gateway
Internet
BS
MN1
data/control
packets
from MN 1
Mobile IP
BS
BS
MN2
packets from
MN2 to MN 1