CSE405 · Spring 2021 · East West University

Full-Fledged
Network Design

A mesh-topology enterprise network spanning 6 campuses with DHCP, DNS, WEB servers and full wireless support.

Topology
Full Mesh
Campuses
6 Sites
Protocol
OSPF v2
Subnet Mask
/24
6+
Interconnected Campuses
10+
Network Components
/24
Subnet Prefix (All)
3×
Server Types Deployed
Network Layout

Topology & Components

The full mesh topology ensures no single point of failure — all 6 campus routers maintain direct links with each other, enabling redundant paths throughout the network.

🖥️
DHCP Server
Automatically assigns unique IP addresses to every host — PCs, tablets, and smartphones — across all subnets using dynamic address pools.
Auto IP Assignment
🌐
DNS Server
Resolves domain names for all hosts, enabling accessfrom any device on the network.
Name Resolution
📡
WEB Server
Hosts the university's web portal, accessible from all wired and wireless devices across every campus subnet.
HTTP Services
🔀
Cisco 2960 Switches
Layer-2 switching within each campus LAN segment, connecting PCs in classrooms, employee rooms, and administrative areas.
Layer 2
📶
PT Routers + OSPF
Six routers interconnected in full mesh. OSPF Area 1 handles all inter-campus routing with dynamic route convergence.
Layer 3 · OSPF
📱
Wireless Access Points
Provides Wi-Fi coverage on main campus for student smartphones and tablets. Devices receive IPs automatically from the DHCP pool.
802.11 Wireless
IP Addressing

Subnet Allocation

Each campus and inter-router serial link occupies its own /24 subnet. OSPF advertises all networks within Area 1.

Router Interface Network Gateway IP Role Status
Router 1 fa0/0 192.168.10.0/24 192.168.10.254 Campus LAN Active
Router 1–2 se2/0 192.168.80.0/24 192.168.80.1 Serial Link Active
Router 1–3 se3/0 192.168.90.0/24 192.168.90.1 Serial Link Active
Router 2 fa0/0 192.168.20.0/24 192.168.20.254 Campus LAN Active
Router 2–3 se2/0 192.168.100.0/24 192.168.100.1 Serial Link Active
Mesh Links se6–8/0 192.168.120–140.0/24 192.168.X.2 Mesh Backhaul Active
CLI Configuration

Router Commands

Router interfaces were configured in privileged EXEC mode. OSPF Area 1 was used for dynamic route propagation across all 6 routers.

Router 1 — Interface Config 
! LAN Interface — Campus 1
interface fa0/0
  ip address 192.168.10.254 255.255.255.0
  no shut
  do wr ! save config
  exit

! Serial to Router 2
interface se2/0
  ip address 192.168.80.1 255.255.255.0
  clock rate 64000
  no shut
  exit

! Serial to Router 3
interface se3/0
  ip address 192.168.90.1 255.255.255.0
  clock rate 64000
  no shut
  exit
Router 1 — OSPF Routing 
! OSPF Process 1 — Area 1
router ospf 1

  ! Advertise LAN subnet
  network 192.168.10.0 0.0.0.255 area 1

  ! Advertise serial links
  network 192.168.80.0 0.0.0.255 area 1
  network 192.168.90.0 0.0.0.255 area 1
  network 192.168.120.0 0.0.0.255 area 1
  network 192.168.130.0 0.0.0.255 area 1
  network 192.168.140.0 0.0.0.255 area 1

exit
! All other routers configured identically
Project Requirements

Design Specifications

Three core requirements were defined for the Apollo International University network. All requirements have been fully implemented.

1
Full Mesh Campus Interconnection All 6 campuses must be interconnected. The mesh topology was used to ensure no single link failure disrupts the entire network — traffic can always be rerouted through alternate paths.
2
Universal Web Access Every PC, tablet, and smartphone must be able to connect . This was achieved by configuring a DNS server to resolve the domain and a WEB server to serve the page.
3
Dynamic IP via DHCP All hosts — wired and wireless — must receive unique IP addresses automatically. A centralized DHCP server manages address pools for each subnet, eliminating the need for manual IP configuration.