Mobile Mpls

8/3/2019 Mobile Mpls

1/21

MOBILE MPLS withRoute Optimization


2/21

CONTENTS

Introduction Objective Mobile IP MPLS Integrating IP and MPLS Triangle routing Problem Route optimization

Significance Literature Survey Simulator


3/21

INTRODUCTION

Mobile MPLS is a new technology that

incorporates mobility management of mobile IP

and Qos and traffic engineering capabilities of

MPLS. Hence the proposed scheme take

advantages of both.


4/21

OBJECTIVE

The aim is to design a system with such an

arrangement so that it operates smoothly and

efficiently providing mobility to users along

with requisite QoS, having small latency,

smoother handoff and reliability.


5/21

MOBILE IP

Mobile IP is a communication protocol, which allowslocation-independent routing of IP datagrams on the

Internet.

It allows mobile devices to move from one network to

another while maintaining a permanent IP address. Each mobile node is identified by its permanent home

address.

While away from its home network, a mobile node is

associated with a care-of address.

Mobile IP specifies how a mobile node registers with its

home agent and how the home agent routes datagrams to

the mobile node through the tunnel.


6/21

Operational Principles of MobileIP Whenever a mobile node moves into any

network other than its home network, it registers

with its Home agent(HA) via Foreign agent(FA)

with its new Care of address(CoA).

Any node that sends data to mobile node, send it

at its home address, from where the HA

redirects the data packets to the mobile nodes

CoA through an IP tunnel.


7/21

MPLS

MPLS stands for Multi Protocol Label Switching.

It provides for efficient routing, forwarding, switching

and traffic flows through the network.

It operates between the layer 2(Data link Layer) and

Layer 3(Network layer), hence referred as 2.5 layerprotocol.

With MPLS packet-forwarding decisions are made

solely on the contents of the label, without the need to

examine the packet itself.

MPLS provides better QoS(Quality of Service) and

Traffic engineering.


8/21

MPLS COMPONENTS

LSR and LERs

FEC (Forward Equivalence Class)

LABEL

LSPs (Label Switched Paths) Hop By Hop routing

Explicit Routing

Signaling Mechanism Label Request

Label Mapping


9/21

MPLS OPERATION

The following steps must be taken for a data packet totravel through an MPLS domain:-

1. Label Creation and distribution.

2. Table creation at each router.

3. Label Switched

Path (LSP)

creation

4. Label Insertion5. Packet forwarding.


10/21

Integrating Mobile IP withMPLS MIP has been chosen as the core of mobility

management mechanism for various networks,

providing universal roaming solution. However it is

incapable to provide QoS.

By integrating MIP with MPLS desired QoS can beachieved along with traffic engineering.

Hence Mobile MPLS is a new scheme that integrates

mobile IP and MPLS protocols, in order to enable

MPLS protocol to support mobility. Challenging issue: Triangle Routing Problem.


11/21

TRIANGLE ROUTINGPROBLEM

When a mobile enters a foreign network, it will send aregistration request to FA, which relays this request to theHA of the mobile node(MN).

HA gets the CoA of MN and sends a label request usingLDP to FA to establish a LSP. FA replies with an LDPmapping message and when HA receives this message LSPfrom HA to FA is established.


12/21

Triangle routing contd..

Finally HA sends registration reply back to FA throughLSP.

Now if any node wants to communicate with the MN in

foreign network, the data packets are send to HA which

redirects them to MN CoA in foreign network. Hence every time the CN sends data, it goes through HA

to MN.

This creates a triangle routing problem.


13/21

Mobile MPLS with RouteOptimization

In Mobile MPLS with route optimization, when a MNenters a foreign network, it will send a registrationrequest to FA, which relays the request to HA.

HA will send then LSP setup request. After LSP isestablished, it will send registration reply back to FA.The operations so far are same.

The route optimization extension adds a conceptualdata structure, the binding cache, to thecorrespondent node and to the foreign agent. The

binding cache contains bindings for mobile nodes' homeaddresses and their current care-of addresses. With thebinding the correspondent node can tunnel datagramsdirectly to the mobile node's care-of address.


14/21

Route optimization contd..


15/21

Route optimized path


16/21

SIGNIFICANCE

Mobile MPLS has proven to be very effective invarious Real-Time applications like video

calling, video streaming, TV broadcast etc.

These applications require minimum delay with

satisfactory QoS and Mobile MPLS serves this

best.


17/21

REVIEW OF LITERATURE

In the paper MOBILE MPLS with Route Optimization, SavinyaPolvichai and Prawit chumchu (2011), proposed a route

optimization protocol to overcome the problem of Triangle

Routing. By adding a correspondent agent to function to Mobile

MPLS edge routers, all the binding information of MN can be

cached by the routers and the packet routing from a correspondentnode can be route optimized.

In paper OPTIMIZED Mobile MPLS ,Wang, Yong Cui, sajal Das

and Mingwei Xu , proposed OMMPLS i.e. Optimized Mobile

MPLS(2008). They introduces the concept of registration by MNand setting up of LSP, happening simultaneously to reduce

handover and signalling redundancy.


18/21

In the paper PROFILE BASED MOBILE MPLS PROTOCOL,Tingzhou Yang, Yixin Dong, Bin Zhoy Dimitrios Makrakis, proposed a

new technique to avoid the triangle routing problem. They introduces

a new concept according to which a CN can send the data packets to

MN by using the MNs basic profile. The profile of MN includes its

mobility pattern, travel schedule, over all regular behavior of the MN.

In the paper, MOBILE IP NETWORK BASED ON HEIRARICHAL

MPLS, Xingchuan yuan, Lishan Kang, Yuping Chen, proposed a

scheme to supports smoother handoff in mobile MPLS networks. They

said by using such a hierarchy there is no need to communicate with

HA of MN, when it moves from one MPLS subnet to another.

In the paper, INTEGRATED SOLUTIONS FOR WIRELESS MPLS

AND MOBILE IP, Abd-Elhamid M. Taha, Hossam Hassanein,

Hussein T. Moufah, authors proposed that how integration of the two

technologies Qos functionality and examines different initiatives to

extend MPLS for Mobile IP.


19/21

SIMULATOR

A number of simulators are available to work withMobile MPLS network like Opnet, ns2.

Since ns2 is open software, so we will be using it.

Ns2 is a discrete event network simulator.

It can be used in simulation of routing protocols and can

be preferably used in ad-hoc networking research.

It uses 2 languages:

Otcl (Object-oriented Tool Command Language) for

topology defining of the network.

C++ defines the internal mechanism (i.e., a backend) of the

simulation objects


20/21

REFRENCES Savinya Polvichai and Prawit chumchu, MOBILE

MPLS with Route Optimization, IEEE 2011.

Wang, Yong Cui, sajal Das and Mingwei Xu,

OPTIMIZED Mobile MPLS ,IEEE, 2008.

Abd-Elhamid M. Taha, Hossam Hassanein, Hussein T.

Moufah, INTEGRATED SOLUTIONS FOR

WIRELESS MPLS AND MOBILE IPIEEE.

http://www.cse.sc.edu/~srihari/reflib/TelliumMPLS.pdf

http://www.hpl.hp.com/personal/Jean_Tourrilhes/MobileIP/ppal.html


21/21

Thank you

Documents

Mobile Mpls