Network Structure and ServicesNetwork Structure and Services

Supercomputer Education and Research Centre

Indian Institute of Science

16 August 2001

Different Faces of ComputingDifferent Faces of Computing

• Document Processing• Graphics & Imaging• Commercial &

Database Applications• Process Engineering• Design• Scientific Computing

(Number Crunching)• Network Computing

Network is the Network is the ComputerComputer.

SERC

PRL CAF CGPL

CES

PURCH

ALUM

ADMIS

SCHEME F&A

GATE

CCE

JNC-P

ANN

CCF SIF

CAOS

TIFR

CTS JNC

HC

MRDG

ASTRA

CSIC DBGL

FLS

CPDM

TOWER

LIB

NCSI CHE

MRC

MATH MET

MGMT

ISU

ME CIVIL

HVE

BC

MCBL

IPC

SID

NIAS

PHY SSCU CEDT MBU ECE AERO CSA EE OC

Dual-attach FDDI2 x 100 Mbps

Single-attach FDDI100 Mbps

Thick Ethernet10 Mbps

Ethernet 10 Mbps

IISc Campus Network BackboneIISc Campus Network Backbone

Hubs

UB Hub

SERC Labs Staff Rooms

Campus FDDI Network

SERC Mail & Web Servers Ethernet

Gigabit Ethernet

FDDI

SERC Subnet 144.16.80/20

Campus Subnet 144.16.64/20

Router

3rd Floor

2nd Floor

1st Floor

Ground Floor

SER

C C

OM

PU

TII

NG

FA

CIL

ITIE

SSERC Local Area NetworkSERC Local Area Network

Server ConnectivityServer Connectivity

Router

Campus FDDI Network

UB HubUB Hub

IBM Servers SP2

Jwala

GigaSwitch

Wide Area ConnectivityWide Area Connectivity

ERNET

@ECE

SERC

Campus

2 Mbps ERNET

64 Kbps VSNL

Internet Gateway

WWW Proxy

Network Services @ SERCNetwork Services @ SERC

Network Information Service (NIS)

• Single sign-on in all SERC machines

• Different NIS groups based on category

• Multiple NIS masters to validate requests

Network File Systems (NFS)

• Single user directory

• Visible from all workstations and Servers

• Served by File Servers over the Network

E-mailE-mail

• E-mail accounts are given by your department. Contact your department mail administrator.

• SERC is not in charge of the Campus e-mail facility.

• Campus e-mail traffic flows through ERNET gateway (located at ERNET Lab, ECE).

• Your Department Administrator : your first point of contact for e-mail related problems.

Email Services @ ERNETEmail Services @ ERNET

• Largest non-computing campus service

• Distributed control/topology

• Announcement list

• helpdesk@ece.iisc.ernet.in

• 14 hr manned support on weekdays

Web SitesWeb Sites

Some major web sites in Campus

• www.iisc.ernet.in• www.serc.iisc.ernet.in• www.csa.iisc.ernet.in• www.ece.iisc.ernet.in• sunsite.iisc.ernet.in

Web Proxy ServiceWeb Proxy Service

ERNET Proxy :• Set your browser

proxy to :– proxy.iisc.ernet.in

port 3128

– Automatic Proxy config ( http://ece.iisc.ernet.in/ pac/iisc.pac )

• 24 hours open to all IISc users

SERC Proxy :• Set your browser

proxy to :– 144.16.79.58 port

3128

• Only for Faculty during office hours

• Open to all IISc users during 6 p.m - 9 a.m.

All the outgoing WWW requests from Campus are through Proxy Services.

Future Plans Future Plans

• Campus Network Upgrade : Migrate to a switched Gigabit speed Network backbone, and 100 Mbps to each desktop : expected by end 2001.

• Newer Network Services : Voice mail, Campus Webcasts, Video-conferencing, and much more ...

Network Survival GuideNetwork Survival Guide

• Know your Network.

• Use your Network.

• Respect your Network Usage Policies.