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RAIN TECHNOLOGY AND

ITS IMPLEMENTATION

PRESENTED BY:

NIRAJ PAGHADAR

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What is RAIN Technology?

RAIN Technology originated at California Institute Of Technology andits purpose was to overcome the existing problems on the internet.

RAIN Technology is capable to provide the solution of all the problemof networking which is currently exist.

RAIN Technology does this by reducing the number of nodes.

RAIN Technology can provide fully automated data recovery in a local

area network or wide area network even if multiple nodes fail.

RAIN Technology has come up with the different network solutionover the internet such as node failure,traffic congestion,link failure.

RAIN Technology is used to increase the fault-tolerance.

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Goals of RAIN Technology:

RAIN technology was able to offer the solution byminimizing the number of nodes in the chain connectingthe client and server

By RAIN tecnology making the existing nodes morerobust and independent of each other

RAIN technology provides the novel feature of replacinga faulty node by a healthy one there by avoiding the breakin information flow. In effect with the aid of RAINconnection between a client and server can be maintaineddespite all the existing problems.

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Rain Component:

Rain Nodes

IP-based Internetworking

Rain Management Software

Storage Component

Communication Component

Computing Component

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Architecture:

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Features:

Communication:Since the network is frequently a single point of

faliure, RAIN provides fault tolerence in the

network.

Group Membership:A fundamental part of fault management is

identifying which nodes are healthy and participeting.

Data Storage:It is achieved through redundent storage schemes

like storing data over multiple disk.

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Communication:BundledInterfaces:

Nodes are permited to have multiple interface

card which increases fault tolerance and bandwidth.

Link Monitoring:A link-state monitoring protocol that provides a

consistence history of the link state at each endpoint.

Fault-Tolerant interconnect Topologies:Network partioning is always a problem when a

cluster of computers must act as a whole.

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Group Membership:

BA

DC

ABCDABCD

ABCDABCD

link/node failuresdynamic reconfiguration

Critical building block Tolerating faults is a very tedious Group Membership ensures that all processes maintain aconsistent view of global membership

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A naive approach:

In this construction we simply connect the nodesto the nearest switches

A ring is 1-fault tolerant so, we can loose 1

switch without upset

A 2nd

switch faliure can partion the network.

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Link Failure:

A BC

D

Switch1 switch2

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Switch Failure:

ACB D

switch switch

Continuous reconfiguration (e.g., load-balancing).

1 2

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Star Topology:

In star topology all the nodes are attached to the central

HUB or switch.

Main problem is that central hub fails then whole network

fails.

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Star Topology Using RAIN :

We pl;ace switch at each node of network and each node

can be connected with few another nodes.

If central node fails the node can communicate with rest

of the nodes of network by using another path.

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Ring Toplogy:

In ring topology one node is connected with the anothernode and forms a ring like network.

There are two main problems of ring network:

If one node fails then whole network fails.

Adding more nodes increases the delay time.

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Ring Topology Using RAIN:

Here the nodes are connected with the other node which ison long distance which helps to reduce delay to transfer

token.

If any link in below ring topology fails then via another

duplicate path node can communicate with the anothernode in the network.

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Bus topology:

In bus topology backbone cable is used on all the

nodes of network are connected the nodes can

communicate via a backbone cable.

Main problem is that backbone fails then whole

network fails.

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Bus Topology Using RAIN:

The nodes are connected with the backbone cable as wellas a switch.So nodes can communicate with either the

backbone cable or the switch,in case of failure of the

backbone cable.

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Mesh Topology:

In mesh topology every node in the network are connected

to each other using a dedicated point-to-point link.

Main problem is that if there is n nodes then all the nodes

should have n-1 nodes.

This adds to large number of cables.

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Mesh Topology Using RAIN:

The nodes are kept at distance a part and link is

established at minimum distance.

Using diameter solution we can avoid dedicated link

among the nodes.

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Conclusion :

Strong Network of Webservers(SNOW) usesthe distributed state sharing mechanism

enable by RAIN System.

SNOW system is a cluster of servers network

that provide a highly robustic system.

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Advantages:

There is no limit on the size of a RAINcluster.

There is no concept of master-slave relation.

A RAIN cluster can tolerate multiple mode

failurs.New node can be added into the added into

the cluster to participate in load sharing.

A part of cluster can taken down for

maintance while other part can contains thework.

It work with many different intermate

application.

This is highly efficient in traffic manegment.

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Disadvantages:

It requires placement of switches in between netwok,so

it is expensive.

Installation and configuration is time consuming.

If the switch fails its effect the network partially and

switch has to be replaced.

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Development of APIs for using the various

building blocks.

The implementation of a real distributed filesystem using the partitioning scheme developedhere.

The Group Communication Protocols are beingextended to address more challenging scenarios.

Future Scope:

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Thank You!