Transcript Washington District Networking Project Presented by

Washington District
Networking
Project
Presented by
Pat Kearney
Pauric Fahey
Seamus Leyden
FLK team
Responsible for design of R.E. Miller LAN
Our goals and implementation.
Terms of reference and parameters
LAN requirements
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Student
Lecturing and administrators
Introduction
Overall Goals
Future requirements
Physical Layout of Project
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Physical design
Design goals of LAN
Collisions
Introduction
Diagram of MDF
Diagram of classroom wiring closet
Switching
VLANs
Routing protocols

Configuring IGRP
Diagram of topology
Introduction
Servers
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DNS and E-mail
Administrative server
Library server
Application server
Addressing scheme
Network management
Connection to internet
Security and Backups
Overall Goals
Design and Implementation of Enterprise
Wide Network
Include LANs at several sites


R.E.Miller
etc
Network must be functional for 10 years
Provide for 100% growth in LAN
Design goals of LAN
Functionality
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Network designed must work
Scalability
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Must be capable of growth
Adaptability
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Must be able to accommodate new technologies
Manageability
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Design should accommodate management and
monitoring to ensure stability of network
Physical Layout of Project
Map of overall School
Topology
Location of MDF and IDFs
Device requirements
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Hubs
Switches
Routers
Other stuff
Physical design
Cabling
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Cat 5 UTP
Fiber Optic
Vertical cross connects backbone
Carries all data between IDF s and MDF[Fiber]
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Horizontal cross connects
Connects hosts to wiring closet
Diagram of topology
Diagram of IDF 1
2 Patch Panel 64 RJ-45 ports
2 LanSwitch 3548 XL Enterprise Edition
Diagram of MDF
2 LanSwitch 3548 XL enterprise edition
Cisco 3660 6-slot Modular Router-AC
Diagram of classroom wiring closet
idf
12 Port 10BaseT Switch w/2 100BaseTX
Ports
Bandwidth and Protocol
Requirements
1 Mbps to all computers on network
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Absolute minimum
100Mb NIC on each machine
100 Mbps to all servers
Routed protocol
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TCP/IP
LAN System used
Ethernet
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Csma/cd
LAN switching infrastructure
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Encourage migration to faster access speeds
[more bw] for future growth
Speeds 10baseT,100baseT,and 1000baseFX
All cabling must comply with Eia/Tia 568
Collisions
Csma/cd has one major drawback
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Collisions
High internet use by students
Answer
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Switches
Break up collision domain [broadcast domain
remains however]
Broadcast domain broken up by vlan.
VLANS
Two VLANS are required
Curriculum
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Student
Administrative
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Teachers, Admin staff
Routing protocols
IGRP
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Ensure network is stable
No routing loops
Count to infinity
Split horizon
Hold down timers
Poison reverse updates
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Rapid convergence important
Configuring IGRP
Done at global config mode
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Router(config)# router igrp 108
Network 10.0.0.0
Network 156.65.65.0
This configures autonomous system 108
to send igrp updates to the 2 networks
specified.
Servers
Dns
Email
Administration
Library
Application
Other servers required if any
DNS and E-mail
Enterprise server in both cases located in
mdf
Host needed i.e. local post office
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This will maintain a complete directory of staff
and students at site
Administrative server
Will track students
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Attendance
Grading
Other administrative functions
Will run TCP/IP
Available only to staff and teachers
Library Server
Available to anyone on site
Must facilitate automated library
information and retrieval system
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Online curricular research
Will run TCP/IP as layer 3 and 4 protocols
Application server
Word processing
Spreadsheets
Presentation software
Client software to access personnel,
student records, admin IS etc.
Addressing scheme
Outline of scheme proposed
Private Addressing Scheme
Format
Class
10
A
10
x
x
building room
x
host
Addressing scheme
Lecturer's Machine
10.x.x.1
to
Network Printers
10.x.x.4
to
Servers
10.x.x.8
to
Administration
10.x.x.16 to
Student's
10.x.x.64 to
10.x.x.3
10.x.x.7
10.x.x.15
10.x.x.63
10.x.x.128
Example of Room no`s
Example of Room no`s
Example of Room no`s
Connecting to the WAN
Wan is accessed via SHAW BUTTE
Provides access to internet
School web site at SHAW BUTTE
Access to central district services
Access for Network Management
Network management
Via SNMP software located at central site
Router and switch configurations to be
stored on central site office and
configurations to be downloaded to Miller
LAN across network
Connection to internet
Network Address Translation [NAT]
ACL's needed here
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These will be controlled at district office
Connectivity to be provided through district
office which is single point of contact for all
schools in project.
All computers on site to have internet
access
ACL’s Required
Students will be restricted to internet only
and DNS service.
Students will be allowed send and receive
E-Mail.
No unauthorised, incoming FTP allowed
through the router.
Full access allowed for teachers and
Administrators.
Security
Double firewall implementation
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Pix firewall
Plus one other
All unauthorized external connections to be
prohibited
At district level the network will be divided into 3
logical classifications with secured
interconnection
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Admin
Curriculum
External
Backups
Incremental backups will cater for point in
time recovery
Daily differential backups will be
scheduled for time when network is idle
say midnight
Weekly backups scheduled for Friday
nights