Location and Layout of the Technical Infrastructure at the IIIT Allahabad

1
Location and Layout of the Technical
Infrastructure at the IIIT Allahabad
MBA/MS Orientation Program 17.07.2007

• Mithilesh Kr. Mishra
• for INDEM - IIITA
• (IIITA Network Development, Engineering and
  Management)

2
Objective

• Familiarize with the technical infrastructure,
  setup
• Clarify the basic fundamentals and demonstrate
  the simplicity and usefulness of services
• Outline the importance and availability of
  resources, your role and expectations from you
• Generate interest to increase efficiency in order
  to ensure the optimum use of technical resources
• Equip to handle day-to-day basic technical
  problems
• Motivate you all to increase your skills on
  computer and be part of resource management team
• Realize the importance of IT in IIITA

3
Constituents of Tech-Infrastructure

• Hardware
• Computers
• Servers
• Peripheral Devices
• Software
• Operating Systems (System Software)
• Packages (Application Software)
• Network
• Topology (layout)
• Devices (functional)
• Services (operational)

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Hardware - Computers

• 1200 (70 assembled)
• P-IV 2.0 3.4 GHz
• 512 MB 1 GB RAM
• 80 - 160 GB HDD (ATA, SATA, SCSI)
• CDR/RW, DVDR/RW/smart media drives
• 17, 19, 21 TFT/CRT color monitors
• INTEL main board (with onboard ports)
• Internet/multimedia ready
• Maintenance friendly

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Hardware - Servers

• 55 (branded as well as assembled)
• P-IV 1.6 3.0 GHz (dual Xeon Processor)
• 2 4 GB RAM (DDR2)
• 18 - 36 80 GB Hot swap 10/15K SCSI HDD
• Onboard Gigabit LAN Interface (dual)
• 15/17 CRT/TFT color monitor
• INTEL main board (with onboard ports)
• Remote administration over network
• Learning (R D) friendly

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Hardware - Peripheral Devices

• Printers(approx. 100)
• LaserJet, Inkjet (color), Dot Matrix
• Scanners, Media Convertors, Connectors
• External Storage Units
• Web/Video Cameras
• Audio/Video Mixer
• Sensors, Speakers, MODEM
• NAS 8 TB with RAID 0
• IP-SAN 8 TB with RAID 6

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Software Packages

• All OS from Microsoft (Windows family)
• Linux (SuSE, Redhat, Fedora, Debian etc.)
• Solaris, Mac OS X
• All software products from Microsoft
• Oracle Database/Development tools
• Mathematica, Statistica, Matlab, C/C
• Simulation Packages (Katia, IGRIP, SimLink,
  Synopsys, Cadence etc.)
• Other Freeware tools

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Network Layout

• Topology Hybrid (Star Bus) (OFC route)
• Backbone (Implementation Layout)
• 6/12/24 core OFC (single mode)
• Gigabit bandwidth
• Redundant lines
• Network B Class (easy to scale)
• Indoor Cabling Structured Ethernet (CAT5)
• Subnets 11 (logical sub grouping of network)
• IP Addressing Static Local (172.16-31.n.n)
• Domain Names iiita.ac.in, rgiit.ac.in, iiita.net

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Network Services

• DNS (Domain Name Service), Gateway
• Firewall Proxy (protection sharing)
• Integrated Central Authentication (LDAP)
• WWW (www.iiita.ac.in, website.iiita.ac.in)
• Mail, Webmail News (to be setup)
• Student Forum (IIITA chit-chat)
• Software Repository (myftp.iiita.ac.in)
• Profile Webpage (50 MB online space)
• FAQ (indem.iiita.ac.in)

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For IIITA Students

• During study at IIITA, students enjoy
• Internet Access 24-hours Internet facility via
  50 Mbps (14) from BSNL, 1 Mbps (11) from ERNET
• Mail account 500 MB Mailbox, 15 MB attachment,
  alias, mail forwarding etc. mail.iiita.ac.in
• Web Profile 50 MB Web space for hosting your own
  websites/profiles at profile.iiita.ac.in/mail-id
• MyIIITA Birthday Reminders, Circulars, etc.
  through Institute website at www.iiita.ac.in
• IIITA Forum Reunion portal for students/alumnae
  at forum.iiita.ac.in
• Download Request based service, archive

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Intranet Connectivity
Server Room
Internet
Router
BB Switch
OFC
CC1
LT
GW
GW
MS Lab
MBA Lab
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MBA LAB

• VLAN 25
• IP Range 172.25.2.24-72 73-110
• Gateway 172.25.2.1, DNS 172.31.1.30

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Internet Termination

• Leased Line (circuit termination)
• 50 Mbps from BSNL (over fiber)
• 1 MBPS from ERNET (over copper)
• MODEM Media Converter (terminator)
• Router (CISCO 3600/1700 DLink DI-2630)
• IP Range (210.212.48.1-62)
• DNS IP (210.212.48.30 210.212.48.62)
• Subnet Mask 255.255.255.192
• Gateway 210.212.48.1
• Round the clock Internet service at Campus LAN

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Network Switches

• CISCO 4000 Back Bone Switch (Layer 3)
• Manageable for packet routing and forwarding
• 12 Fiber ports (Gigabit)
• 24 Ethernet ports (Gigabit)
• Configured for 12 Virtual LANs on each Fiber
  ports
• Routing enabled amongst VLANs
• VLAN Traffic monitoring and controlling
• CISCO 2950 Distribution Switch (Layer 2)
• Manageable for packet forwarding
• 2 Fiber ports (Gigabit)
• 24 Ethernet ports (Gigabits)
• DLink 1024R (Local switch)
• Unmanageable (auto management)
• 24 Ethernet ports (10/100 Mbps)

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Virtual LANs

• Logical partitioning of LAN
• 172.16-31.n.n
• E.g. 172.18.1.2., 172.31.1.22
• 172.16-31.1.1 gateway to VLANs
• 172.16-31.1.2 gateway to building LAN
• IP Range 172.16-31.n.11-55 (may vary)
• Netmask 255.255.255.192
• DNS 172.31.1.30 172.31.1.62
• Fly-over for Internet at CC1 and CC2
• Central Firewall at Server Room

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Server Room

• Central - in Lecture Theater
• Internet/Intranet/Intercom termination (CLAN)
• Internet/Intranet service hosting
• Central firewall, authentication file storage
• Traffic monitoring and bandwidth management
• Proxy authenticated Internet service
• Web sites and mail service
• Software repository
• Regional - Local at each building
• Building LAN (BLAN) termination
• Internet/Intranet service hosting
• Fly-over (FirewallGatewayProxy) at CC1 CC2
• Intercom service (Telephone exchange)
• Managed by STUDENTS (INDEM)

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Network Configuration

• Computer Name (e.g. cc10210)
• Domain Name (iiita.ac.in)
• IP Address (must be in valid range)
• Subnet Mask (255.255.255.192)
• Gateway (172.n.1.1) (n 16 to 31)
• Primary DNS (172.31.1.30 or 172.31.1.62)
• Secondary DNS (202.54.15.1)
• WINS (nothing)
• Computer name must be set

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Basic Network Troubleshooting

• Status of NIC and patch cord
• Proxy setting
• Auto script (http//www.iiita.ac.in/proxy.pac)
• IP address and port number (172.31.1.48080)
• Gateway/DNS/host checking
• PING (ping 172.25.1.1)
• TRACEROUTE (tracert www.iiita.ac.in))
• NSLOOKUP (nslookup www.google.co.in)
• NET commands (net share)
• Status of switch port (green-100,orange-10Mbps)
• Enable/disable LAN connection
• Network utilization (using task manager)

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IIITA WEBSITE www.iiita.ac.in

• Architecture, Design, Themes
• Photo Gallery
• MyIIITA
• Birthday reminder
• New mail reminder
• Faculty/Students Profiles
• Other Websites (programs, projects, events)
• Telephone Directory
• TriNetra (Live/On demand Video Streaming)
• Student Forum
• Previous versions (archive of x-versions)

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IIITA Mail user-id_at_iiita.ac.in

• 250/500 MB inbox size (as per need)
• Central authentication (single user-id/password)
• IMAP/POP3 enabled, mail client configuration
• Address search, Mail Archiving
• Display settings and quota monitoring
• Spam filtering, spell checker
• Mail buffer for redundancy
• Mailing list, Attachment size 15 MB
• Avoid misuse of IIITA mail account
• How to configure mail client (outlook)

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PC Management

• Hard disk partitioning
• Operating System (main software)
• File system, Plug play devices
• Virtual RAM, Video RAM
• Registry database size (for Windows)
• Swap partition (for Linux)
• Control Panel, Regional settings
• Program Installation/Uninstallation
• Network configuration and Firewall
• Computer naming (xyz.iiita.ac.in)
• Foreground and Background services
• Process/Performance monitoring

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Electronic File Management

• Separate file/data partition (multiple)
• NTFS file system (secure)
• Restoration from Recycle bin
• Folders by name of physical files
• Single document on single topic
• Max. 30-40 pages in a single file
• (hyphen) separated file/folder names
• Check the last accessed date before opening the
  file
• File/folder list views customization

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Anti Virus

• Software versions do not matter
• Virus definition files should be up to date
• Auto updation of virus definition is possible
• Scheduled scanning and monitoring
• Avoid use of external storage media
• Central solution is also available (clients)
• Single solution is enough
• Fix-tools for worms are available online for
  downloads

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Performance Tuning

• Disc scanning, Defragmentation
• Virtual memory on multiple partitions
• Portable registry database (regular watch)
• Remove TEMPORARY files (must)
• Proper un-installation of software (must)
• Avoid installation of online software tools (e.g.
  musical desktop, fancy watch etc.)
• Proper shutdown of programs as well as system
  (must)
• Remote desktop is handy but slow (avoid)

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INDEM Role

• In-house experimentation, implementation,
  maintenance the network resources
• Competent guidance faith of authorities
• Students volunteer as active member
• High-tech implementations (open source)
• Reliable and secure Internet/Intranet services
  round the clock
• Technical challenge rather than problem
• Innovative and learning environment
• User/Management friendliness, IIITA flavor

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Precautions

• Each and every activity is under close monitoring
• Log files are generated at servers for critical
  and unhealthy activities (auto feature)
• IP addresses and Login accounts are traceable
• Official withdrawal of technical services and/or
  punishment for wrong practices over LAN
• Appreciation for reporting on systems bug/flaw
• Download, chatting are discouraged in Labs
• Innovative ideas, algorithms are solicited
• Help line indem_at_iiita.ac.in

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The End

• Thanks
• Happy Computing at IIITA
• Doubts/Query ?..

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Demos

• Desktop (wallpaper, screen saver, display
  settings, refresh rate, shortcuts etc.)
• My computer (manage, property, devices, services,
  session, share etc.)
• Windows Explorer (file view, options, file
  association etc.)
• Task manager (processes, resource utilization and
  optimization)
• Control panel, Registry, Remote Desktop
• Help from system and search engines (GOOGLE)

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Network Classes
IP Address Class Network and Host Capacities
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OFC Routes
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Network Connectivity
Back
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Internet Termination
Back