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Contents

Introduction

Objective

Description Of System

Special features (Advantage, Limitation, Specialty)

ault And ailures

!" #ypes of failure$" %ectification process

&aintenances

Conclusion

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Introduction

In the age of global position system Indian railway is

also adopting some new technology like as RAILNET - Indian RailwaysIntranet. Indian Railways hae decided to set !p their own "orporate

#ide Information $ystem %"#I$& called RAILNET to proide comp!ter

connectiity between Railway 'oard with (onal Railways) *rod!ction

+nits) "entrali,ed Training Instit!tes ) R$) "RE) /T*0"alc!tta 1

23 ma4or training centers

Indian Railway is constantly looking for new ideas tosimplify and streamline proced!res for the conenience. In this

endeaor they hae introd!ced seeral path breaking technologies on

the Railway system oer the years. As we introd!ce new facilities on

the railway system) we are tempted to take a peek into the past.

#ith the introd!ction of this system) the Railways will also benefit

in seeral ways.

These are5 6eeping pace with the latest technology

Eliminate the need to moe paper doc!ments between different

offices

"hange from 7*ERII" RE*RTIN8 to 7Information on

emand

*roide Internet Access to Railnet +sers

"onnectiity and "omm!nication

ata $haring

9ardware $haring

*erformance Enhancement and 'alancing

Entertainment

Objective

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b4ectie of this pro4ect work is to get an idea with the system

installed in ,onal railway which enrich the learning process and to get

familiar with constr!ction ) installation) maintenance) types)

applications )feat!res and tro!bleshooting. This helps in b!ilding

confidence and assimilation of concepts ta!ght at IRI$ET into working

systems

The main ob4ectie of this pro4ect is to know how the Railnet works)

what are the ario!s e:!ipment !se) what are the adantage) what are the

problem 1 there tro!bleshooting.

%AIL'# A%%A'&'# A# *+ O%A*-.%

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Sync/ronous #ransport &odule (S#&)0!1

The $T/-; %$ynchrono!s Transport/od!le leel-;& is the $9 IT+-T

fiber opticnetworktransmission standard it is the information str!ct!re. Itconsists of information payload and oerhead bits in block frame

str!ct!re) which repeats at eery ; $T/ followed by an integer) which indicates the leel of $9.

> $T/ ; is the first leel of $9 bit rates

$T/ ; with ;==.=

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A virtual LA') commonly known as a 7LA') is a gro!p of hosts with a

common set of re:!irements that comm!nicate as if they were attached to

the same broadcast domain) regardless of their physical location. A CLAN

has the same attrib!tes as a physical LAN) b!t it allows for end stations tobe gro!ped together een if they are not located on the same network

switch. Network reconfig!ration can be done thro!gh software instead of

physically relocating deices.

CLANs are created to proide the segmentation serices traditionally

proided by ro!ters in LAN config!rations. CLANs address iss!es s!ch

as scalability) sec!rity) and network management. Ro!ters in CLAN

topologies proide broadcast filtering) sec!rity) address s!mmari,ation)

and traffic flow management. 'y definition) switches may not bridge I*

traffic between CLANs as it wo!ld iolate the integrity of the CLAN

broadcast domain.

This is also !sef!l if someone wants to create m!ltiple Layer F networks

on the same Layer < switch. or eample) if a 9"* serer %which will

broadcast its presence& is pl!gged into a switch it will sere any host on

that switch that is config!red to get its I* from a 9"* serer. 'y !sing

CLANs yo! can easily split the network !p so some hosts wonGt !se that

9"* serer and will obtain link-local addresses) or obtain an address

from a different 9"* serer.

#/e I- provided at 7LA' is !8$"!9"!!"! and subnet is $::"$::"$::

D'S is $5$"!;!"$