26-03-2010, 08:16 PM
i need power point presentation and some infomation regading mobile ip.. so i kindly request you to send the information...
thank you...
26-03-2010, 08:16 PM
i need power point presentation and some infomation regading mobile ip.. so i kindly request you to send the information... thank you...
09-04-2010, 11:42 PM
Hi,
visit this thread for more details on mobile ip: https://seminarproject.net/Thread-mobile...nar-report
12-08-2010, 03:42 PM
plz send ppt on mobile ip ,
ur topic is very intresting i need power point presentation and some infomation regading mobile ip.. so accept my request
07-05-2011, 02:04 PM
hi friend you can refer these pages to get the details on Mobile IP
https://seminarproject.net/Thread-mobile...nar-report https://seminarproject.net/Thread-mobile...nar-report https://seminarproject.net/Thread-mobile...2#pid41302 https://seminarproject.net/Thread-mobile...ort?page=2 https://seminarproject.net/Thread-mobile-ip--1794 https://seminarproject.net/Thread-mobile-ip
18-08-2012, 04:22 PM
Mobile IP
mobile1.ppt (Size: 173.5 KB / Downloads: 23) We’re not quite done with IP You’re probably sick and tired of hearing about all things IP Forwarding, routing, multicast, etc… One last topic we must cover because it’s going to be important in the future – mobile networking Examples of mobile networking today? Examples of mobile networking tomorrow? Mobile networking should not be confused with portable networking Portable networking requires connection to same ISP Portable Networking Technology Cellular systems Cellular Digital Packet Data (CDPD) 3G Bluetooth Low cost, short range radio links between mobile devices Wireless Ethernet (802.11) Widely used wireless MAC layer technology Mobility and Standard IP Routing IP assumes end hosts are in fixed physical locations What happens if we move a host between networks? IP addresses enable IP routing algorithms to get packets to the correct network Each IP address has network part and host part This keeps host specific information out of routers DHCP is used to get packets to end hosts in networks This still assumes a fixed end host What if a user wants to roam between networks? Mobile users don’t want to know that they are moving between networks Why can’t mobile users change IP when running an application? Mobile IP Mobile IP was developed as a means for transparently dealing with problems of mobile users Enables hosts to stay connected to the Internet regardless of their location Enables hosts to be tracked without needing to change their IP address Requires no changes to software of non-mobile hosts/routers Requires addition of some infrastructure Has no geographical limitations Requires no modifications to IP addresses or IP address format Supports security Could be even more important than physically connected routing IETF standardization process is still underway Mobile IP Entities Mobile Node (MN) The entity that may change its point of attachment from network to network in the Internet Detects it has moved and registers with “best” FA Assigned a permanent IP called its home address to which other hosts send packets regardless of MN’s location Since this IP doesn’t change it can be used by long-lived applications as MN’s location changes Home Agent (HA) This is router with additional functionality Located on home network of MN Does mobility binding of MN’s IP with its COA Forwards packets to appropriate network when MN is away Does this through encapsulation Mobile IP Support Services Agent Discovery HA’s and FA’s broadcast their presence on each network to which they are attached Beacon messages via ICMP Router Discovery Protocol (IRDP) MN’s listen for advertisement and then initiate registration Registration When MN is away, it registers its COA with its HA Typically through the FA with strongest signal Registration control messages are sent via UDP to well known port Encapsulation – just like standard IP only with COA Decapsulation – again, just like standard IP Mobile IP Operation A MN listens for agent advertisement and then initiates registration If responding agent is the HA, then mobile IP is not necessary After receiving the registration request from a MN, the HA acknowledges and registration is complete Registration happens as often as MN changes networks HA intercepts all packets destined for MN This is simple unless sending application is on or near the same network as the MN HA masquerades as MN There is a specific lifetime for service before a MN must re-register There is also a de-registration process with HA if an MN returns home
06-09-2012, 10:34 AM
MOBILE IP
1MOBILE IP.ppt (Size: 553 KB / Downloads: 15) What is Mobile IP? IETF standard protocol Designed to allow mobile users to move from one network to another while maintaining their permanent IP address. Described in IETF RFC 3344 Mobile IP Operation What is the Biggest Challenge? Biggest challenge is allowing a host to retain its address without requiring routers to learn host-specific routes. Mobile IP solves the problem by: Allowing a computer to hold two addresses simultaneously A permanent and fixed PRIMARY ADDRESS And a SECONDARY ADDRESS that is temporary Mobile IP Entities Mobile Node (MN) The entity that may change its point of attachment from network to network in the Internet Detects it has moved and registers with “best” FA Assigned a permanent IP called its home address to which other hosts send packets regardless of MN’s location Since this IP doesn’t change it can be used by long-lived applications as MN’s location changes Home Agent (HA) This is router with additional functionality Located on home network of MN Does mobility binding of MN’s IP with its COA Forwards packets to appropriate network when MN is away Does this through encapsulation (IP in IP Tunneling) Foreign Agent (FA) Another router with enhanced functionality If MN is away from HA the it uses an FA to send/receive data to/from HA Advertises itself periodically Forward’s MN’s registration request Decapsulates messages for delivery to MN Care-of-address (COA) Address which identifies MN’s current location Sent by FA to HA when MN attaches Usually the IP address of the FA Correspondent Node (CN) End host to which MN is corresponding (eg. a web server) Foreign Agent Discovery Uses ICMP router discovery mechanism Routers periodically send ICMP router advertisement messages Hosts may send an ICMP router solicitation to prompt for the advertisement A Mobile may also multicast to the all agents group (224.0.0.11) If the router acts as a foreign agent then in its reply it will append a mobility agent extension The message type is the same as for ICMP router advertisements except that if the datagram length specified in the IP header is greater than the length specified in the ICMP router discovery message, then the extension is present
05-10-2012, 01:28 PM
MOBILE IP
MOBILE IP.pptx (Size: 528.47 KB / Downloads: 22) IP Address An Internet Protocol address (IP address) is a numerical label assigned to each device (e.g., computer, printer) participating in a computer network that uses the Internet Protocol for communication. An IP address serves two principal functions: host or network interface identification location addressing. What is Mobile IP? Mobile IP (or IP mobility) is an Internet Engineering Task Force (IETF) standard communications protocol that is designed to allow mobile device users to move from one network to another while maintaining a permanent IP address. Using Mobile IP, nodes may change their point-of- attachment to the Internet without changing their home IP address. Why Mobile IP? Need a protocol which allows network connectivity across host movement Protocol to enable mobility must not require massive changes to router software, etc. Must be compatible with large installed base of IPv4 networks/hosts Confine changes to mobile hosts and a few support hosts which enable mobility SECURlNG THE REGISTRATION PROCEDURE Registration in mobile IP must be made secure so that fraudulent registrations can be detected and rejected. There are three authentication extensions used with mobile IP, as follows: ->The mobile-home authentication extension -> The mobile-foreign authentication extension ->The foreign-home authentication extension Problems with Mobile IP Suboptimal “triangle” routing What if MN is in same sub network as the node to which it is communicating and HA is on the other side of the world? Solution: Let the CN know the COA of MN Then the CN can create its own tunnel to MN CN must be equipped with software to enable it to learn the COA Initiated by HA who notifies CN via “binding update” Binding table can become stale CONCLUSIONS……… Mobility support in the network layer is of special importance, as the network layer holds together the huge internet with common protocol IP. Mobile IP has been designed to enable mobility in the internet without changing the existing wired system. However mobile IP leaves some unsolved points, especially when it comes to security, efficiency of packet flow and support of quality of service. |
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