Transcript Automation of Batch Vacuum Pans At D.R.B.C Sugar Factory

MOBILE IP & IP MICRO-MOBILITY
SUPPORT
Presented by
Maheshwarnath Behary
Assisted by
Vishwanee Raghoonundun
Koti Choudary
MSc Computer Networks
Middlesex University
OVERVIEW OF PRESENTATION
Definition of Mobile IP
Entities & Terminology
Services supported with Mobile IP
Drawbacks of Mobile IP
Solution to mobile IP problems
Cellular IP protocol
Hawaii protocol
Hierarchical mobile IPv6
Conclusion
Reference
INTRODUCTION TO MOBILE IP
 Support the mobility of hosts while still remaining
connected to the internet.
 Mobile IP is able to track a mobile host without needing to
change the mobile host's long-term IP address.
 Proposed with the objective of supporting mobile
users with application Layer transparency and the
possibility of seamless roaming,
 Mobile IP has to support security as authentication is
performed to ensure that rights are being protected. .
ENTITIES AND TERMINOLOGY
Entities involved with Mobile IP
COA
Home
network
Router
HA
Router
FA
MN
Foreign
network
Internet
CN
Router
Mobile Node (MN), Home Agent (HA), Foreign Agent (FA), Care-of-address
(COA), Correspondent Node (CN), Home Address, Mobility Agent, Tunnel.
SERVICES SUPPORTED IN MOBILE IP
Agent Discovery: Newly arrived mobile nodes get
registered to the foreign agents by either agent solicitation
or agent advertisement.
Registration: The mobile node registers its care-ofaddress with its home agent so that the home agent knows
where to forward its packets.
Encapsulation: The process of enclosing an IP
datagram within another IP header which contains the careof-address of the mobile node. This is defined as the tunnel
originated from the Home agent to the Foreign agent.
Decapsulation: The reverse process of
encapsulation.
DRAWBACKS OF MOBILE IP
Triangular routing problem due to indirect routing
mechanism.
The mobile IP is more suitable for macro-mobility,
but not suitable to the micro-mobility as it induces
high load on network when dealing with highly
mobile users.
Poor QoS in mobile IP is due to latency of
handover and transmission; caused by overheads
in IP- in-IP encapsulation.
Poor reliability due to single home agent model.
SOLUTION TO MOBILE IP PROBLEMS
Main target : To keep the frequent updates generated by
local changes of MN away from the home network and
only inform the HA about major changes. Thus leading to
the minimisation of traffic & delay within the network.
The above is supported by the use of micro-mobility
protocols like Cellular IP, Hawaii, Hierarchical mobile
IPv6.
CELLULAR IP PROTOCOL
Internet
Advantage
1.
Cellular IP is mostly self
configuring and easily
manageable.
Mobile IP
Cellular IP
gateway/ Foreign
agent
Data/control
packets from MN1
Disadvantages
1.
2.
3.
Poor efficiency since multiple
paths used for packet forwarding
Changes required from Mobile
IP
Poor security as other user can
easily give different source
address to get copy of
information addressed to other
Mobile node from the CIPGW.
Packet from
MN1 to MN2
Base
station
Mobile
Node_1
Base
station
Base
station
Mobile
node_2
Cellular IP
HANDOFF-AWARE WIRELESS ACESS
INTERNET INFRASTRUCTURE (HAWAII)
PROTOCOL
Internet / HA
1.
2.
1.
2.
Advantages
Routing changes are
initiated by the foreign
domain’s infrastructure
Mostly transparent to
mobile node
Disadvantages
No provisions regarding
the set up of IP tunnels
No private address is
supported because of colocated COA
Backbone router
Crossover router
4. Updating
routing table
wrt to the
handoff update
Base
station
3. Registration with
new BS
Mobile
Node_1
2.Registration with HA
Base
station
Base
station
Mobile
node_2
DHCP server
1. Obtaining a CoA
HIERARCHICAL MOBILE IPv6
(HMIPv6)
Advantages
1.
2.
Internet / HA
Mobile nodes can have limited
location privacy since LCOA can
Binding update
be hidden
can be sent to the
Direct routing between the CNs CN in the same
sharing the same link is possible domain
RCOA
Mobility Anchor
PointHA
The MAP assist local
handovers and maps
the RCOA to the LCOA
Disadvantages
1.
2.
Additional infrastructure
component required (MAP)
Routing tables are changed
based on messages sent by the
mobile nodes. Hence these
require strong authentication
against denial of service attacks.
Access
Router
Access
Router
LCOAnew
Mobile
Node_1
Mobile
node_1
LCOAold
CONCLUSION
Centralization of security-critical functionality:
-this is the main security benefit of a firewall
architecture and should be preserved
Mutual authentication of all instances involved:
-prevent attacks using forged control messages.
Transparency to mobile nodes and correspondent
nodes:
-any necessary extensions of mobile IP standard
are hidden from mobile nodes as well as
correspondent nodes.
References
[1]
Jochen Schiller, “Mobile Communications”, Second Edition,
2003
[2]
http://www.cse.ohio-state.edu/~jain/cis78895/ftp/mobile_ip/index.html#Entities
[3]
A. Lasebae, “Mobile and Wireless Networks”.
PEARSONCustom Publishing
END OF PRESENTATION
THANK YOU FOR YOUR KIND
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