Multi-Area Network Design & Implementation

A comprehensive enterprise-grade multi-area network designed and implemented in Cisco Packet Tracer, featuring four interconnected routing domains with full route redistribution, centralized DHCP, NAT, ACLs, and network services.

Computer Networks Lab - Final Project | 4th Semester BS Cyber Security
FAST National University of Computer and Emerging Sciences

Project Overview
Key Features
Network Topology
VLSM Subnetting Design
Routing Architecture
Device Inventory
Cabling & Port Mapping
Router Configurations
Route Redistribution
DHCP Configuration
Network Services (DNS, Mail, Web)
NAT Configuration
Access Control Lists (ACLs)
Testing & Verification
Project Structure
How to Use
Author

Project Overview

This project demonstrates the design and implementation of a complex enterprise network consisting of four distinct routing domains interconnected through route redistribution. The network serves 11 LAN subnets (Networks A-K) connected via 22 WAN point-to-point links, all addressed using VLSM (Variable Length Subnet Masking) from a single Class A base network.

Project Specifications

Parameter	Value
Base Network	`32.0.0.0/8`
Public IP (NAT)	`32.117.72.215`
Private IP (NAT)	`182.9.248.232`
Total LAN Subnets	11 (Networks A-K)
Total WAN Links	22 point-to-point (/30)
Routers	19 (Cisco 2811)
Switches	11
End Devices	22 (PCs, Laptops, Servers)
Routing Protocols	OSPF, EIGRP, RIPv2
Simulation Tool	Cisco Packet Tracer (Instructor Version)

Key Features

Feature	Description
VLSM Subnetting	Efficient IP allocation for 11 networks with varying host requirements (27K-117K hosts)
Multi-Protocol Routing	OSPF Area 1, EIGRP AS 5, OSPF Area 2, and RIPv2 running simultaneously
Route Redistribution	Mutual redistribution at 3 border routers enabling full end-to-end connectivity
Centralized DHCP	Single DHCP server (Server1) serving all 11 networks via relay agents
Email Services	SMTP/POP3 mail server with DNS on Server0 for intra-network email
NAT	Static NAT on Router17 translating private-to-public addresses
ACLs	Extended ACLs restricting specific host and subnet access to the web server
Redundant Paths	Multiple parallel WAN links providing network resilience

Network Topology

The network is divided into four routing domains, each highlighted in the topology:

     
      OSPF AREA 1                           EIGRP AS 5                  
                                                                        
  Router4Router1R0          Router3Router5Router6Router9R8  
  (Net A)  (Net B,C)                                                  
                    Router2                  Router7              
                                                  (Net D)    (Net E)(F) 
     
                                                                    
                                                                 Router10
                                                                    
     
         OSPF AREA 2                                RIPv2               
                                                                        
  Router10Router11Router12            Router18R14R15R16R17  
                      (Net G)                                        
            Router13   Router18           R17R14     
           (Net H, I)                               (Net J)   (Net K)

OSPF Area 1

EIGRP AS 5

OSPF Area 2

RIP Domain

VLSM Subnetting Design

Base Network: `32.0.0.0/8`

Total Available Addresses: 2 = 16,777,216

Host Requirements (Sorted Largest Smallest)

VLSM Rule: Always allocate the largest subnet first, then proceed to the smallest to avoid address overlap.

#	Network	Routing Domain	Required Hosts	Host Bits (n)	Block Size (2)	Usable (22)	CIDR	Subnet Mask
1	J	RIP	117,175	17	131,072	131,070	/15	255.254.0.0
2	A	OSPF Area 1	112,494	17	131,072	131,070	/15	255.254.0.0
3	F	EIGRP 5	96,224	17	131,072	131,070	/15	255.254.0.0
4	I	OSPF Area 2	94,223	17	131,072	131,070	/15	255.254.0.0
5	G	OSPF Area 2	82,202	17	131,072	131,070	/15	255.254.0.0
6	E	EIGRP 5	57,455	16	65,536	65,534	/16	255.255.0.0
7	D	EIGRP 5	53,007	16	65,536	65,534	/16	255.255.0.0
8	K	RIP	50,618	16	65,536	65,534	/16	255.255.0.0
9	H	OSPF Area 2	48,355	16	65,536	65,534	/16	255.255.0.0
10	C	OSPF Area 1	40,946	16	65,536	65,534	/16	255.255.0.0
11	B	OSPF Area 1	27,979	15	32,768	32,766	/17	255.255.128.0

VLSM Allocation Table

#	Network	CIDR	Subnet Mask	Network Address	First Usable	Last Usable	Broadcast
1	J	/15	255.254.0.0	32.0.0.0	32.0.0.1	32.1.255.254	32.1.255.255
2	A	/15	255.254.0.0	32.2.0.0	32.2.0.1	32.3.255.254	32.3.255.255
3	F	/15	255.254.0.0	32.4.0.0	32.4.0.1	32.5.255.254	32.5.255.255
4	I	/15	255.254.0.0	32.6.0.0	32.6.0.1	32.7.255.254	32.7.255.255
5	G	/15	255.254.0.0	32.8.0.0	32.8.0.1	32.9.255.254	32.9.255.255
6	E	/16	255.255.0.0	32.10.0.0	32.10.0.1	32.10.255.254	32.10.255.255
7	D	/16	255.255.0.0	32.11.0.0	32.11.0.1	32.11.255.254	32.11.255.255
8	K	/16	255.255.0.0	32.12.0.0	32.12.0.1	32.12.255.254	32.12.255.255
9	H	/16	255.255.0.0	32.13.0.0	32.13.0.1	32.13.255.254	32.13.255.255
10	C	/16	255.255.0.0	32.14.0.0	32.14.0.1	32.14.255.254	32.14.255.255
11	B	/17	255.255.128.0	32.15.0.0	32.15.0.1	32.15.127.254	32.15.127.255

WAN Link Subnets (/30 - Point-to-Point)

All 22 WAN links use /30 subnets starting at 32.15.128.0:

WAN	Link	Network	Side-1 IP	Side-2 IP	Domain
W1	Router4 Router1	32.15.128.0/30	.1 (R4)	.2 (R1)	OSPF Area 1
W2	Router1 Router0	32.15.128.4/30	.5 (R1)	.6 (R0)	OSPF Area 1
W3	Router0 Router2	32.15.128.8/30	.9 (R0)	.10 (R2)	OSPF Area 1
W4	Router2 Router3	32.15.128.12/30	.13 (R2)	.14 (R3)	OSPFEIGRP
W5	Router3 Router5	32.15.128.16/30	.17 (R3)	.18 (R5)	EIGRP 5
W6	Router5 Router6	32.15.128.20/30	.21 (R5)	.22 (R6)	EIGRP 5
W7	Router6 Router7	32.15.128.24/30	.25 (R6)	.26 (R7)	EIGRP 5
W8	Router6 Router9	32.15.128.28/30	.29 (R6)	.30 (R9)	EIGRP 5
W9	Router9 Router8	32.15.128.32/30	.33 (R9)	.34 (R8)	EIGRP 5
W10	Router8 Router10	32.15.128.36/30	.37 (R8)	.38 (R10)	EIGRPOSPF2
W11	Router10 Router11	32.15.128.40/30	.41 (R10)	.42 (R11)	OSPF Area 2
W12	Router11 Router12	32.15.128.44/30	.45 (R11)	.46 (R12)	OSPF Area 2
W13	Router11 Router13	32.15.128.48/30	.49 (R11)	.50 (R13)	OSPF Area 2
W14	Router11 Router18	32.15.128.52/30	.53 (R11)	.54 (R18)	OSPF2RIP
W15	Router18 Router14	32.15.128.56/30	.57 (R18)	.58 (R14)	RIP
W16	Router14 Router15	32.15.128.60/30	.61 (R14)	.62 (R15)	RIP
W17	Router15 Router16	32.15.128.64/30	.65 (R15)	.66 (R16)	RIP
W18	Router16 Router17	32.15.128.68/30	.69 (R16)	.70 (R17)	RIP
W19	Router15 Router17	32.15.128.72/30	.73 (R15)	.74 (R17)	RIP
W20	Router7 Router8	32.15.128.76/30	.77 (R7)	.78 (R8)	EIGRP 5
W21	Router17 Router14	32.15.128.80/30	.81 (R17)	.82 (R14)	RIP
W22	Router1 Router2	32.15.128.84/30	.85 (R1)	.86 (R2)	OSPF Area 1

IP Address Usage Summary

Category	Count	Range
LAN Subnets (A-K)	11	`32.0.0.0` - `32.15.127.255`
WAN /30 Links	22	`32.15.128.0` - `32.15.128.87`
Total Used	-	1,015,896 of 16,777,216 (6.06%)

Routing Architecture

Routing Domains

Domain	Protocol	Routers	Networks Served
OSPF Area 1	OSPF Process 1, Area 1	Router4, Router1, Router0, Router2	A, B, C
EIGRP 5	EIGRP AS 5	Router2, Router3, Router5, Router6, Router7, Router9, Router8, Router10	D, E, F
OSPF Area 2	OSPF Process 1, Area 2	Router10, Router11, Router12, Router13, Router18	G, H, I
RIPv2	RIP Version 2	Router18, Router14, Router15, Router16, Router17	J, K

Redistribution Points

Three border routers perform mutual route redistribution between adjacent routing domains:

Border Router	Connects	Direction
Router2	OSPF Area 1 EIGRP 5	`redistribute eigrp 5 subnets` / `redistribute ospf 1 metric 1500 100 255 1 1500`
Router10	EIGRP 5 OSPF Area 2	`redistribute eigrp 5 subnets` / `redistribute ospf 1 metric 1500 100 255 1 1500`
Router18	OSPF Area 2 RIPv2	`redistribute rip subnets` / `redistribute ospf 1 metric 5`

Network-to-Gateway Mapping

Network	Subnet	Gateway Router	Interface	Gateway IP	Domain
A	32.2.0.0/15	Router4	Fa0/1	32.2.0.1	OSPF Area 1
B	32.15.0.0/17	Router1	Fa0/0	32.15.0.1	OSPF Area 1
C	32.14.0.0/16	Router1	Fa0/1	32.14.0.1	OSPF Area 1
D	32.11.0.0/16	Router7	Fa0/0	32.11.0.1	EIGRP 5
E	32.10.0.0/16	Router9	Fa0/0	32.10.0.1	EIGRP 5
F	32.4.0.0/15	Router8	Fa0/0	32.4.0.1	EIGRP 5
G	32.8.0.0/15	Router12	Fa0/0	32.8.0.1	OSPF Area 2
H	32.13.0.0/16	Router13	Fa0/0	32.13.0.1	OSPF Area 2
I	32.6.0.0/15	Router13	Fa0/1	32.6.0.1	OSPF Area 2
J	32.0.0.0/15	Router17	Fa0/0	32.0.0.1	RIP
K	32.12.0.0/16	Router16	Fa0/0	32.12.0.1	RIP

Device Inventory

Routers (All Cisco 2811)

Router	Role	WIC-2T Modules	LAN Networks
Router4	Network A gateway	1	A
Router1	Network B+C gateway, OSPF hub	2 (3 serial)	B, C
Router0	OSPF transit	1	-
Router2	OSPFEIGRP border + redistribution	2 (3 serial)	-
Router3	EIGRP entry	1	-
Router5	EIGRP transit	1	-
Router6	EIGRP transit (no LAN)	2 (3 serial)	-
Router7	Network D gateway	1	D
Router9	Network E gateway	1	E
Router8	Network F gateway, EIGRPOSPF2 border	2 (3 serial)	F
Router10	EIGRPOSPF2 border + redistribution	1	-
Router11	OSPF Area 2 hub	1	-
Router12	Network G gateway	0 (Ethernet only)	G
Router13	Network H+I gateway	1	H, I
Router18	OSPF2RIP border + redistribution	1	-
Router14	RIP core	2 (3 serial)	-
Router15	RIP transit	2 (3 serial)	-
Router16	Network K gateway	1	K
Router17	Network J gateway + NAT	2 (3 serial)	J

Switches

Switch	Model	Network	Connected To
Switch1	Switch-PT	A	Router4 Fa0/1
Switch0	2960-24TT	B	Router1 Fa0/0
Switch2	2960-24TT	C	Router1 Fa0/1
Switch5	2960-24TT	D	Router7 Fa0/0
Switch3	2960-24TT	E	Router9 Fa0/0
Switch4	2960-24TT	F	Router8 Fa0/0
Switch7	2960-24TT	G	Router12 Fa0/0
Switch8	2960-24TT	H	Router13 Fa0/0
Switch6	2960-24TT	I	Router13 Fa0/1
Switch9	2960-24TT	K	Router16 Fa0/0
Switch10	2960-24TT	J	Router17 Fa0/0

End Devices

Device	Type	Network	Switch Port	IP Method
Laptop2	Laptop-PT	A	Switch1 Fa0/1	DHCP
Laptop3	Laptop-PT	A	Switch1 Fa0/2	DHCP
Laptop0	Laptop-PT	B	Switch0 Fa0/1	DHCP
Laptop1	Laptop-PT	B	Switch0 Fa0/2	DHCP
Server0	Server-PT	C	Switch2 Fa0/3	Static: 32.14.0.2
PC0	PC-PT	C	Switch2 Fa0/1	DHCP
PC1	PC-PT	C	Switch2 Fa0/2	DHCP
PC4	PC-PT	D	Switch5 Fa0/1	DHCP
Laptop6	Laptop-PT	D	Switch5 Fa0/2	DHCP
PC2	PC-PT	E	Switch3 Fa0/1	DHCP
Laptop4	Laptop-PT	E	Switch3 Fa0/2	DHCP
PC3	PC-PT	F	Switch4 Fa0/1	DHCP
Laptop5	Laptop-PT	F	Switch4 Fa0/2	DHCP
PC7	PC-PT	G	Switch7 Fa0/1	DHCP
PC8	PC-PT	G	Switch7 Fa0/2	DHCP
Server1	Server-PT	H	Switch8 Fa0/1	Static: 32.13.0.2
PC5	PC-PT	I	Switch6 Fa0/1	DHCP
PC6	PC-PT	I	Switch6 Fa0/2	DHCP
PC10	PC-PT	K	Switch9 Fa0/1	DHCP
PC9	PC-PT	K	Switch9 Fa0/2	DHCP
Server2	Server-PT	K	Switch9 Fa0/3	Static: 32.12.0.2
PC12	PC-PT	J	Switch10 Fa0/1	DHCP
PC11	PC-PT	J	Switch10 Fa0/2	DHCP

Servers Summary

Server	Location	IP	Services
Server0	Network C (Switch2)	32.14.0.2	DNS, HTTP, SMTP/POP3 (Mail+Web+DNS)
Server1	Network H (Switch8)	32.13.0.2	DHCP Server (centralized)
Server2	Network K (Switch9)	32.12.0.2	-

Cabling & Port Mapping

Cable Types

Cable Type	Usage	Visual in Packet Tracer
Serial DCE	Router-to-Router WAN links	Red solid lines
Crossover Ethernet	Router10Router11, Router11Router12	Black dashed lines
Straight-Through	SwitchRouter, SwitchPC/Laptop/Server	Green lines

WAN Cabling (Router-to-Router)

OSPF Area 1 Connections

From	Port	To	Port	Cable	WAN
Router4	Se0/0/0	Router1	Se0/0/0	Serial DCE	W1
Router1	Se0/0/1	Router0	Se0/0/0	Serial DCE	W2
Router0	Se0/0/1	Router2	Se0/0/0	Serial DCE	W3
Router1	Se0/1/0	Router2	Se0/1/0	Serial DCE	W22

EIGRP 5 Connections

From	Port	To	Port	Cable	WAN
Router2	Se0/0/1	Router3	Se0/0/0	Serial DCE	W4
Router3	Se0/0/1	Router5	Se0/0/0	Serial DCE	W5
Router5	Se0/0/1	Router6	Se0/0/0	Serial DCE	W6
Router6	Se0/0/1	Router7	Se0/0/0	Serial DCE	W7
Router6	Se0/1/0	Router9	Se0/0/0	Serial DCE	W8
Router9	Se0/0/1	Router8	Se0/0/0	Serial DCE	W9
Router7	Se0/0/1	Router8	Se0/1/0	Serial DCE	W20

OSPF Area 2 Connections

From	Port	To	Port	Cable	WAN
Router8	Se0/0/1	Router10	Se0/0/0	Serial DCE	W10
Router10	Fa0/0	Router11	Fa0/0	Crossover	W11
Router11	Fa0/1	Router12	Fa0/1	Crossover	W12
Router11	Se0/0/0	Router13	Se0/0/0	Serial DCE	W13
Router11	Se0/0/1	Router18	Se0/0/0	Serial DCE	W14

RIP Connections

From	Port	To	Port	Cable	WAN
Router18	Se0/0/1	Router14	Se0/0/0	Serial DCE	W15
Router14	Se0/0/1	Router15	Se0/0/0	Serial DCE	W16
Router15	Se0/0/1	Router16	Se0/0/0	Serial DCE	W17
Router16	Se0/0/1	Router17	Se0/0/0	Serial DCE	W18
Router15	Se0/1/0	Router17	Se0/0/1	Serial DCE	W19
Router17	Se0/1/0	Router14	Se0/1/0	Serial DCE	W21

Router Configurations

All router CLI configurations are available in the helping material/ folder. Below is a summary of each router's role and key commands.

OSPF Area 1

Router4 - Network A Gateway

hostname Router4
interface FastEthernet0/1
 ip address 32.2.0.1 255.254.0.0
 ip helper-address 32.13.0.2
interface Serial0/0/0
 ip address 32.15.128.1 255.255.255.252
router ospf 1
 network 32.2.0.0 0.1.255.255 area 1
 network 32.15.128.0 0.0.0.3 area 1

Router1 - Network B+C Hub (3 serial ports, 2x WIC-2T)

hostname Router1
interface FastEthernet0/0
 ip address 32.15.0.1 255.255.128.0
 ip helper-address 32.13.0.2
interface FastEthernet0/1
 ip address 32.14.0.1 255.255.0.0
 ip helper-address 32.13.0.2
interface Serial0/0/0
 ip address 32.15.128.2 255.255.255.252
interface Serial0/0/1
 ip address 32.15.128.5 255.255.255.252
interface Serial0/1/0
 ip address 32.15.128.85 255.255.255.252
router ospf 1
 network 32.15.0.0 0.0.127.255 area 1
 network 32.14.0.0 0.0.255.255 area 1
 network 32.15.128.0 0.0.0.3 area 1
 network 32.15.128.4 0.0.0.3 area 1
 network 32.15.128.84 0.0.0.3 area 1

Router0 - Transit

hostname Router0
interface Serial0/0/0
 ip address 32.15.128.6 255.255.255.252
interface Serial0/0/1
 ip address 32.15.128.9 255.255.255.252
router ospf 1
 network 32.15.128.4 0.0.0.3 area 1
 network 32.15.128.8 0.0.0.3 area 1

Router2 - OSPFEIGRP Border (Redistribution)

hostname Router2
interface Serial0/0/0
 ip address 32.15.128.10 255.255.255.252
interface Serial0/0/1
 ip address 32.15.128.13 255.255.255.252
interface Serial0/1/0
 ip address 32.15.128.86 255.255.255.252
router ospf 1
 network 32.15.128.8 0.0.0.3 area 1
 network 32.15.128.84 0.0.0.3 area 1
 redistribute eigrp 5 subnets
router eigrp 5
 network 32.15.128.12 0.0.0.3
 redistribute ospf 1 metric 1500 100 255 1 1500
 no auto-summary

OSPF Neighbor Table — Router1

Routing Table — Router2

EIGRP 5

Router3, Router5, Router6 - Transit Routers

Router3: Se0/0/0 (.14) Se0/0/1 (.17) - entry from OSPF border
Router5: Se0/0/0 (.18) Se0/0/1 (.21) - transit
Router6: Se0/0/0 (.22), Se0/0/1 (.25 to R7), Se0/1/0 (.29 to R9) - transit hub, 2x WIC-2T

All run router eigrp 5 with no auto-summary.

Router7 - Network D Gateway

hostname Router7
interface FastEthernet0/0
 ip address 32.11.0.1 255.255.0.0
 ip helper-address 32.13.0.2
interface Serial0/0/0
 ip address 32.15.128.26 255.255.255.252
interface Serial0/0/1
 ip address 32.15.128.77 255.255.255.252
router eigrp 5
 network 32.11.0.0 0.0.255.255
 network 32.15.128.24 0.0.0.3
 network 32.15.128.76 0.0.0.3
 no auto-summary

Router9 - Network E Gateway

hostname Router9
interface FastEthernet0/0
 ip address 32.10.0.1 255.255.0.0
 ip helper-address 32.13.0.2
router eigrp 5
 network 32.10.0.0 0.0.255.255
 network 32.15.128.28 0.0.0.3
 network 32.15.128.32 0.0.0.3
 no auto-summary

Router8 - Network F Gateway + EIGRPOSPF2 Border (2x WIC-2T)

hostname Router8
interface FastEthernet0/0
 ip address 32.4.0.1 255.254.0.0
 ip helper-address 32.13.0.2
router eigrp 5
 network 32.4.0.0 0.1.255.255
 network 32.15.128.32 0.0.0.3
 network 32.15.128.36 0.0.0.3
 network 32.15.128.76 0.0.0.3
 no auto-summary

EIGRP Neighbor Table — Router6

OSPF Area 2

Router10 - EIGRPOSPF2 Border (Redistribution)

hostname Router10
router eigrp 5
 network 32.15.128.36 0.0.0.3
 redistribute ospf 1 metric 1500 100 255 1 1500
 no auto-summary
router ospf 1
 network 32.15.128.40 0.0.0.3 area 2
 redistribute eigrp 5 subnets

Router11 - OSPF2 Hub (4 connections)

Connects to Router10 (Fa0/0 crossover), Router12 (Fa0/1 crossover), Router13 (Se0/0/0), Router18 (Se0/0/1).

Router12 - Network G | Router13 - Network H+I

Router12: Fa0/0 Network G (32.8.0.1), Fa0/1 crossover from Router11
Router13: Fa0/0 Network H (32.13.0.1), Fa0/1 Network I (32.6.0.1)

RIPv2

Router18 - OSPF2RIP Border (Redistribution)

hostname Router18
router ospf 1
 network 32.15.128.52 0.0.0.3 area 2
 redistribute rip subnets
router rip
 version 2
 network 32.15.128.56
 redistribute ospf 1 metric 5
 no auto-summary

Router14-17 - RIP Domain

Router14: Core RIP (3 serial, 2x WIC-2T)
Router15: Transit (3 serial, 2x WIC-2T)
Router16: Network K gateway (32.12.0.1)
Router17: Network J gateway (32.0.0.1) + NAT router (3 serial, 2x WIC-2T)

All run router rip version 2 no auto-summary.

RIP Routes — Router17

Route Redistribution

Border Router	From To	Command	Applied Under
Router2	EIGRP 5 OSPF 1	`redistribute eigrp 5 subnets`	`router ospf 1`
Router2	OSPF 1 EIGRP 5	`redistribute ospf 1 metric 1500 100 255 1 1500`	`router eigrp 5`
Router10	EIGRP 5 OSPF 1	`redistribute eigrp 5 subnets`	`router ospf 1`
Router10	OSPF 1 EIGRP 5	`redistribute ospf 1 metric 1500 100 255 1 1500`	`router eigrp 5`
Router18	RIP OSPF 1	`redistribute rip subnets`	`router ospf 1`
Router18	OSPF 1 RIP	`redistribute ospf 1 metric 5`	`router rip`

EIGRP Metric: Bandwidth (1500), Delay (100), Reliability (255), Load (1), MTU (1500)

Redistribution Proof — Router10

DHCP Configuration

Centralized DHCP Server - Server1 (32.13.0.2, Network H)

Setting	Value
IP Address	32.13.0.2
Subnet Mask	255.255.0.0
Default Gateway	32.13.0.1
DNS Server	32.14.0.2

DHCP Pools

Pool	Network	Gateway	DNS	Start IP	Subnet Mask
POOL-A	A	32.2.0.1	32.14.0.2	32.2.0.10	255.254.0.0
POOL-B	B	32.15.0.1	32.14.0.2	32.15.0.10	255.255.128.0
POOL-C	C	32.14.0.1	32.14.0.2	32.14.0.10	255.255.0.0
POOL-D	D	32.11.0.1	32.14.0.2	32.11.0.10	255.255.0.0
POOL-E	E	32.10.0.1	32.14.0.2	32.10.0.10	255.255.0.0
POOL-F	F	32.4.0.1	32.14.0.2	32.4.0.10	255.254.0.0
POOL-G	G	32.8.0.1	32.14.0.2	32.8.0.10	255.254.0.0
POOL-I	I	32.6.0.1	32.14.0.2	32.6.0.10	255.254.0.0
POOL-J	J	32.0.0.1	32.14.0.2	32.0.0.10	255.254.0.0
POOL-K	K	32.12.0.1	32.14.0.2	32.12.0.10	255.255.0.0

DHCP Relay (`ip helper-address 32.13.0.2`)

Router	Interface	Network
Router4	Fa0/1	A
Router1	Fa0/0, Fa0/1	B, C
Router7	Fa0/0	D
Router9	Fa0/0	E
Router8	Fa0/0	F
Router12	Fa0/0	G
Router13	Fa0/1	I
Router17	Fa0/0	J
Router16	Fa0/0	K

DHCP Pool List — Server1

DHCP IP Assignment — Laptop

Network Services (DNS, Mail, Web)

Server0 - 32.14.0.2 (Network C)

Service	Status	Details
DNS	ON	`www.project.com` 32.14.0.2
HTTP	ON	Default web page
SMTP	ON	Domain: `project.com`
POP3	ON	Domain: `project.com`

Email Users

User	Email	Password
laptop0	laptop0@project.com	password
laptop1	laptop1@project.com	password
laptop2	laptop2@project.com	password
laptop3	laptop3@project.com	password
pc0	pc0@project.com	password
pc1	pc1@project.com	password

Email Client Config (All devices in Networks A, B, C)

Field	Value
Incoming/Outgoing Mail Server	32.14.0.2

DNS Records — Server0

Email Service & User List — Server0

Email Send Success

Email Received — Laptop0

Web Browser — www.project.com

NAT Configuration

NAT is configured on Router17 (gateway for Network J) per assignment requirements.

Setting	Value
NAT Type	Static
Inside Local	182.9.248.232
Inside Global (Public)	32.117.72.215
Inside Interface	Fa0/0 (Network J)
Outside Interfaces	Se0/0/0, Se0/0/1, Se0/1/0

interface FastEthernet0/0
 ip nat inside
interface Serial0/0/0
 ip nat outside
interface Serial0/0/1
 ip nat outside
interface Serial0/1/0
 ip nat outside
ip nat inside source static 182.9.248.232 32.117.72.215

Verification:

Router17#show ip nat translations
Pro  Inside global     Inside local       Outside local      Outside global
---  32.117.72.215     182.9.248.232      ---                ---

Note: NAT translation verification is shown in the CLI output above.

Access Control Lists (ACLs)

ACL 1: Block One Host in Network A from Web Server

Setting	Value
Router	Router4
Interface	Fa0/1 (inbound)
Blocked Host	32.2.0.10 (first DHCP client)
Blocked Destination	32.14.0.2 (Server0)

access-list 100 deny ip host 32.2.0.10 host 32.14.0.2
access-list 100 permit ip any any
interface FastEthernet0/1
 ip access-group 100 in

ACL 2: Block All of Network D from Web Server

Setting	Value
Router	Router7
Interface	Fa0/0 (inbound)
Blocked Subnet	32.11.0.0/16
Blocked Destination	32.14.0.2 (Server0)

access-list 101 deny ip 32.11.0.0 0.0.255.255 host 32.14.0.2
access-list 101 permit ip any any
interface FastEthernet0/0
 ip access-group 101 in

ACL Rules — Router4

ACL Rules — Router7

Ping FAIL — Blocked Host (32.2.0.10 → Server0)

Ping SUCCESS — Allowed Host (Net A → Server0)

Ping FAIL — Network D → Server0

Testing & Verification

Routing Table Verification

Router	Expected Route Types
Router2	O (OSPF), D EX (EIGRP external)
Router10	D (EIGRP), O (OSPF), O E2 (external)
Router18	O (OSPF), R (RIP)
Router17	R (RIP routes to all networks)

End-to-End Ping Tests

From	To	Expected	Reason
Laptop3 (Net A)	32.14.0.2 (Server0)	Pass	Normal connectivity
Laptop0 (Net B)	32.0.0.1 (Net J)	Pass	Cross-domain redistribution
PC4 (Net D)	32.14.0.2 (Server0)	Fail	ACL blocks Network D
PC7 (Net G)	32.2.0.1 (Net A)	Pass	OSPF2EIGRPOSPF1
PC12 (Net J)	32.8.0.1 (Net G)	Pass	RIPOSPF2
Laptop2 (32.2.0.10)	32.14.0.2	Fail	ACL blocks this specific host

Service Tests

Test	Method	Expected
DNS	Browser `www.project.com`	Website loads
Web	Browser `http://32.14.0.2`	Website loads
Email Send	Laptop3 Email Compose laptop0@project.com	Success
Email Receive	Laptop0 Email Receive	Email appears
DHCP	Any PC IP Config DHCP	Gets IP
NAT	`show ip nat translations` on Router17	Static entry

Cross-Domain Ping (Net A → Net J)

Routing Table — Router2

Routing Table — Router18

DHCP Verification — Laptop0

DHCP Verification — Laptop3

DHCP Verification — PC7

Project Structure

Multi-Area-Network-Design-Implementation/
│
├── README.md                                          # This file
├── 24i-2038_B_Computer_Networks_Project.pkt           # Cisco Packet Tracer project file
├── i242038_B_Computer_Networks_Project_Report.docx    # Detailed project report
└── screenshots/                                       # All verification screenshots
    ├── topology_full.png                              # Full network topology overview
    ├── ospf_area1.png                                 # OSPF Area 1 zoomed view
    ├── eigrp.png                                      # EIGRP AS 5 zoomed view
    ├── ospf_area2.png                                 # OSPF Area 2 zoomed view
    ├── rip.png                                        # RIP domain zoomed view
    ├── ospf_neighbors.png                             # OSPF neighbor table (Router1)
    ├── eigrp_neighbors.png                            # EIGRP neighbor table (Router6)
    ├── router2_routes.png                             # Routing table on Router2
    ├── routes_router2.png                             # Routes verification on Router2
    ├── routes_router18.png                            # Routes verification on Router18
    ├── rip_routes.png                                 # RIP routes on Router17
    ├── redistribution_routes.png                      # Redistribution proof on Router10
    ├── dhcp_pools.png                                 # DHCP pool list on Server1
    ├── dhcp_assignment.png                            # DHCP IP assignment on laptop
    ├── dhcp_verification_Laptop0.png                  # DHCP verification - Laptop0
    ├── dhcp_verification_Laptop3.png                  # DHCP verification - Laptop3
    ├── dhcp_verification_PC7.png                      # DHCP verification - PC7
    ├── dns_records.png                                # DNS records on Server0
    ├── email_service.png                              # Email service config on Server0
    ├── email_send.png                                 # Email send success
    ├── email_receive.png                              # Email received on Laptop0
    ├── web_access.png                                 # Web browser accessing www.project.com
    ├── acl_router4.png                                # ACL rules on Router4
    ├── acl_router7.png                                # ACL rules on Router7
    ├── acl_block_host.png                             # Ping fail from blocked host
    ├── acl_allow_host.png                             # Ping pass from allowed host
    ├── acl_block_netd.png                             # Ping fail from Network D
    └── ping_cross_domain.png                          # Cross-domain ping test

How to Use

Download & Install Cisco Packet Tracer (Instructor Version recommended)

Clone this repository:

git clone https://github.com/UsmanPrime/Multi-Area-Network-Design-Implementation.git

Open 24i-2038_B_Computer_Networks_Project.pkt in Packet Tracer
Explore the topology - click any router and go to CLI to view configs
Test connectivity - use the PC command prompts to ping across domains
Verify services - open web browsers on PCs to access www.project.com

Verification Commands

# On any router CLI:
show ip route                  # View routing table
show ip interface brief        # Check interface status
show ip ospf neighbor          # OSPF adjacencies
show ip eigrp neighbors        # EIGRP adjacencies
show running-config            # Full configuration
show access-lists              # ACL rules
show ip nat translations       # NAT entries (Router17)

Troubleshooting

Problem	Solution
Serial port missing	Add WIC-2T module (power off router first)
Interface "administratively down"	Run `no shutdown` on the interface
DHCP not assigning IPs	Check `ip helper-address` on gateway router
Routes missing after redistribution	Verify `no auto-summary` on EIGRP/RIP
ACL blocks all traffic	Ensure `permit ip any any` is the last ACL entry
Email timeout	Verify DNS A record and correct mail server IP (32.14.0.2)
Clock rate error	Only set `clock rate` on the DCE side of serial link

Author

Usman Ibrahim

Roll Number: 24I-2038
Program: BS Cyber Security - 4th Semester
University: FAST National University of Computer and Emerging Sciences
GitHub: @UsmanPrime

License

This project is submitted as part of the Computer Networks Lab course requirements. Feel free to use it as a reference for learning purposes.

If you found this project helpful, please give it a star!

Name		Name	Last commit message	Last commit date
Latest commit History 2 Commits
screenshots		screenshots
24i-2038_B_Computer_Networks_Project.pkt		24i-2038_B_Computer_Networks_Project.pkt
README.md		README.md
i242038_B_Computer_Networks_Project_Report.docx		i242038_B_Computer_Networks_Project_Report.docx

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Multi-Area Network Design & Implementation

Table of Contents

Project Overview

Project Specifications

Key Features

Network Topology

OSPF Area 1

EIGRP AS 5

OSPF Area 2

RIP Domain

VLSM Subnetting Design

Base Network: 32.0.0.0/8

Host Requirements (Sorted Largest Smallest)

VLSM Allocation Table

WAN Link Subnets (/30 - Point-to-Point)

IP Address Usage Summary

Routing Architecture

Routing Domains

Redistribution Points

Network-to-Gateway Mapping

Device Inventory

Routers (All Cisco 2811)

Switches

End Devices

Servers Summary

Cabling & Port Mapping

Cable Types

WAN Cabling (Router-to-Router)

Router Configurations

OSPF Area 1

OSPF Neighbor Table — Router1

Routing Table — Router2

EIGRP 5

EIGRP Neighbor Table — Router6

OSPF Area 2

RIPv2

RIP Routes — Router17

Route Redistribution

Redistribution Proof — Router10

DHCP Configuration

Centralized DHCP Server - Server1 (32.13.0.2, Network H)

DHCP Pools

DHCP Relay (ip helper-address 32.13.0.2)

DHCP Pool List — Server1

DHCP IP Assignment — Laptop

Network Services (DNS, Mail, Web)

Server0 - 32.14.0.2 (Network C)

Email Users

Email Client Config (All devices in Networks A, B, C)

DNS Records — Server0

Email Service & User List — Server0

Email Send Success

Email Received — Laptop0

Web Browser — www.project.com

NAT Configuration

Access Control Lists (ACLs)

ACL 1: Block One Host in Network A from Web Server

ACL 2: Block All of Network D from Web Server

ACL Rules — Router4

ACL Rules — Router7

Ping FAIL — Blocked Host (32.2.0.10 → Server0)

Ping SUCCESS — Allowed Host (Net A → Server0)

Ping FAIL — Network D → Server0

Testing & Verification

Routing Table Verification

End-to-End Ping Tests

Service Tests

Cross-Domain Ping (Net A → Net J)

Routing Table — Router2

Routing Table — Router18

DHCP Verification — Laptop0

DHCP Verification — Laptop3

DHCP Verification — PC7

Project Structure

How to Use

Verification Commands

Base Network: `32.0.0.0/8`

DHCP Relay (`ip helper-address 32.13.0.2`)

Packages