PDIS

(1) LAN User Requirements Document

Note: this is the same as the WAN requirements documentation, execept I have highlighted only those sections relevant to our LAN design.

There will be 2-segments in each school & also the District Office

Transport Speeds:
- 10Base-T
- 100Base-T
- 100Base-FX
Media:
- Horizontal cable = 100Mbps CAT5 UTP
- Backbone cable = multimode fibre-optic
LAN Infrastructure:
- based on Ethernet LAN switching
MDF:
- central point for LAN cabling attachment
POP for WAN connection
- Houses major electrical components
IDF's:
- used where horizontal cable > 100m or where site conditions dictate
- connect to MDF in star or extended star topology
Each Room:
- has own POP with lockable cabinet for: electrical components & cable terminations
- supplied with 4 CAT 5 UTP runs (via decorative wire molding)
  - 1 terminates at teacher's (admin) workstation
  - each is tested for 100Mbps capacity
- supports 24 workstations

All file servers are categorized as: enterprise or workgroup
- enterprise - attaches to MDF
- workgroup - may attach to IDF

Each school will have its own:

Domain Name Servers (DNSs) & Email Delivery Server:
- maintain complete directory of all staff & students
- e-mail server - acts as local post office box & stores all e-mail messages
- (enterprise)
Administrative Servers:
- houses student tracking, attendance, grading & other admin functions
- available to administration only
- (workgroup)
Library Server(s):
- automated library information & retrieval system - available to entire school
- will house online library
- (enterprise)
Application Servers:
- houses common user applications (including MS office applications)
- provides for efficient upgrading of applications
- (enterprise)
Other Servers:
- will all be considered departmental
- placed according to needs
- (workgroup)

At the District Office, a master network management host will:
- administer complete TCP/IP addressing & naming convention
- have management rights over all devices
- store all router configurations
admin computers will have static addressing
curriculum computers will use DHCP
each regional location will:
- house a regional network management host to support its area
- use SNMP standards

Each school has:

3 logical classifications (with secure interconnections):
- Admin
- Curriculum
- External
2 physically separate LANs (admin & curriculum)
- ACL's (on routers) will prevent curriculum accessing admin
- Admin will be able to access curriculum *
- e-mail & DNS will pass feely between all LANs
- each LAN segment will have a file server
strict user ID & password policy
Internet connectivity (from all computers) provided through double firewall
- will refuse external connections via Internet

Internet interconnectivity will be:
- supplied though District Office (a single point of contact)
- available from all schools
- via double firewall implementation
  - ACL's will prevent connectivity from the outside Internet
A public backbone will be used for Internet exposed services including:
- e-mail & DNS - which will pass freely in both directions (they pose no risk)
- a Web server - will allow all schools to upload a home page
- any other additional web servers

IGRP (which is more efficient than RIP) will be the only routing protocol used in the LAN.
VLANs will be used to logically seperate teachers & students.