Transcript IIITA Network - indem @ iiita - IIIT

MBA/MS Orientation Program
17.07.2007
Location and Layout of the
Technical Infrastructure at
the IIIT Allahabad
Mithilesh Kr. Mishra
for INDEM - IIITA
(IIITA Network Development, Engineering and Management)
Objective
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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
Constituents of Tech-Infrastructure
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Hardware
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Software
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Computers
Servers
Peripheral Devices
Operating Systems (System Software)
Packages (Application Software)
Network
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Topology (layout)
Devices (functional)
Services (operational)
Hardware - Computers
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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
Hardware - Servers
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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
Hardware - Peripheral Devices
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Printers(approx. 100)
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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
Software Packages
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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
Network Layout
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Topology – Hybrid (Star + Bus) (OFC route)
Backbone (Implementation Layout)
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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
Network Services
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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)
For IIITA Students
During study at IIITA, students enjoy
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Internet Access: 24-hours Internet facility via 50
Mbps (1:4) from BSNL, 1 Mbps (1:1) 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
Intranet Connectivity
Server Room
Router
BB Switch
OFC
GW
GW
CC1
MS Lab
LT
MBA Lab
Internet
MBA LAB
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VLAN 25
IP Range 172.25.2.24-72 & 73-110
Gateway 172.25.2.1, DNS 172.31.1.30
router
INTERNET
INDEMICA
Backbone Switch
MBA LAB
Internet Termination
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Leased Line (circuit termination)
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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
Network Switches
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CISCO 4000 Back Bone Switch (Layer 3)
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CISCO 2950 Distribution Switch (Layer 2)
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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
Manageable for packet forwarding
2 Fiber ports (Gigabit)
24 Ethernet ports (Gigabits)
DLink 1024R+ (Local switch)
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Unmanageable (auto management)
24 Ethernet ports (10/100 Mbps)
Virtual LANs
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Logical partitioning of LAN
172.16-31.n.n
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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
Server Room
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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 (Firewall+Gateway+Proxy) at CC1 & CC2
Intercom service (Telephone exchange)
Managed by STUDENTS (INDEM)
Network Configuration
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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
Basic Network Troubleshooting
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Status of NIC and patch cord
Proxy setting
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Gateway/DNS/host checking
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Auto script (http://www.iiita.ac.in/proxy.pac)
IP address and port number (172.31.1.4:8080)
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)
IIITA WEBSITE www.iiita.ac.in
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Architecture, Design, Themes
Photo Gallery
MyIIITA
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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)
IIITA Mail [email protected]
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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)
PC Management
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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
Electronic File Management
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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
Anti Virus
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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
Performance Tuning
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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)
INDEM – Role
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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
Precautions
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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 system’s bug/flaw
Download, chatting are discouraged in Labs
Innovative ideas, algorithms are solicited
Help line – [email protected]
The End
Thanks…
Happy Computing at IIITA
Doubts/Query ?..
Demos
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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)
Network Classes
IP
Addr
ess
Clas
s
Total # Of
Bits For
Networ
k ID /
Host ID
First
Octet
of IP
Addre
ss
# Of
Netw
ork
ID
Bits
Used
To
Ident
ify
Clas
s
Usable # Of
Network ID
Bits
Number of
Possibl
e
Network
IDs
# Of Host
IDs
Per
Netwo
rk ID
Class A
8 / 24
0xxx xxxx
1
8-1 = 7
27-2 = 126
224-2 =
16,277,
214
Class B
16 / 16
10xx xxxx
2
16-2 = 14
214 = 16,384
216-2 =
65,534
Class C
24 / 8
110x xxxx
3
24-3 = 21
221 =
2,097,152
28-2 = 254
OFC Routes
Network Connectivity
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Internet Termination
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