Packet Tracer Multi-Subnet Companion

Guided CLI configurations, SVI routing, WAN crossovers, and WLC enterprise AP orchestrations.

Interactive Topology Map Live Network View
10.10.10.0/30 10.10.10.4/30 10.10.10.8/30 10.10.10.16/30 VLAN 10: 192.168.10.0/24 VLAN 20: 192.168.20.0/24 192.168.30.0/24 192.168.40.0/24 Router 0 Router 1 Router 2 Router 3 Router 4 Multilayer Switch0 Switch 0 Switch 1 PC1 PC2 LAP 0 DHCP Server DNS Server WLC 3504
Scenario & Lab Guidelines Lab Overview

Welcome to the Enterprise Routing and Services Workspace!

Your objective is to deploy this multi-router topology and configure dynamic IP services across the enterprise.

Active Learning Notice: Clicking on individual active switches, routers, servers, or crossover links in the SVG topology map on the left will open customized Objectives, Port configurations, and Conceptual Syntax Rules to guide your implementation.

Before you can configure local devices, you must define your boundaries in the Subnet Planner tab. Good luck!

Subnet Boundaries Planner Scope Calculations

Enter your calculated IP scopes for each segment. The topology dictates the subnet bounds. Local networks are assigned /24 masks, and all WAN serial/crossover connections are assigned /30 masks.

Subnet / Segment Target Scope Subnet Mask Network ID First Gateway Usable Range Broadcast ID Status
VLAN 10 (HR)
PC1 Host subnet		 192.168.10.0/24 .2 to .254 ?
VLAN 20 (IT)
PC2 Host subnet		 192.168.20.0/24 .2 to .254 ?
Wireless Subnet (30)
LAP & Laptops		 192.168.30.0/24 .2 to .254 ?
Server Network (40)
DNS, DHCP, WLC		 192.168.40.0/24 .2 to .254 ?
Transit Link (MLS-R0)
Gig0/1 Switch IP link		 192.168.0.0/30 N/A (SVI Gateways handle) .1 to .2 ?
WAN Link R0-R1
crossover cable link		 10.10.10.0/30 N/A .1 to .2 ?
WAN Link R1-R2
crossover cable link		 10.10.10.4/30 N/A .5 to .6 ?
WAN Link R2-R3
crossover cable link		 10.10.10.8/30 N/A .9 to .10 ?
WAN Link R3-R4
crossover cable link		 10.10.10.16/30 N/A .17 to .18 ?
Awaiting calculations input... Fill out all fields to test.

Subnets Locked

Please calculate and verify your subnets in the Subnet Planner tab first. Once verified, this panel will unlock, enabling custom assignments!

Interface Assignments (Custom IP Setup) Real-time Collision Validation

Assign exact IP addresses to your active SVI switch interfaces and router ports. The system will validate that your IPs fall correctly within calculated subnets and contain no conflict overlaps!

Multilayer Switch 0 (Catalyst 3560)

SVI VLAN 10 (HR) Scope: 192.168.10.x
SVI VLAN 20 (IT) Scope: 192.168.20.x
GigabitEthernet0/1 (Routed Link) Scope: 192.168.0.x /30

Router 0 (ISR 4331)

GigabitEthernet0/0/0 (to Switch) Scope: 192.168.0.x /30
GigabitEthernet0/0/1 (to R1) Scope: 10.10.10.0 /30

Router 1 (ISR 4331)

GigabitEthernet0/0/0 (from R0) Scope: 10.10.10.0 /30
GigabitEthernet0/0/1 (to R2) Scope: 10.10.10.4 /30

Router 2 (ISR 4331)

GigabitEthernet0/0/0 (Gateway 30) Scope: 192.168.30.x
GigabitEthernet0/0/1 (from R1) Scope: 10.10.10.4 /30
GigabitEthernet0/0/2 (to R3) Scope: 10.10.10.8 /30

Router 3 (ISR 4331)

GigabitEthernet0/0/0 (from R2) Scope: 10.10.10.8 /30
GigabitEthernet0/0/1 (to R4) Scope: 10.10.10.16 /30

Router 4 (ISR 4331)

GigabitEthernet0/0/0 (Gateway 40) Scope: 192.168.40.x
GigabitEthernet0/0/1 (from R3) Scope: 10.10.10.16 /30

Dedicated Server Farm Elements

DHCP Server IP Scope: 192.168.40.x
DNS Server IP Scope: 192.168.40.x
WLC IP Scope: 192.168.40.x
Enter interface addresses to initiate logical validations.

Configurations Locked

You must fully calculate your subnets and configure/verify your IP Assignments in order to unlock custom Cisco IOS CLI guides!

Dynamic CCNA CLI Configuration Guide Calculated Router Syntax
MultilayerSwitch0 CLI Configuration
! Select a device on the left menu

📘 Technical Command Breakdown

Select a device from the left menu to display its Cisco IOS configurations and step-by-step logic.

Device Configurations: Central DHCP & WLC-PT GUI Settings Walkthrough

Follow these visual guides carefully to deploy the DHCP pools and orchestrate the Wireless LAN Controller (WLC-PT) using native Packet Tracer dialogue panels.

Server0 (DHCP Server) - Services [X]

1. Static IP Configuration

Click on Server-PT DHCP Server in Packet Tracer, go to Desktop → IP Configuration, and apply these static parameters:

2. Setup Dynamic DHCP Pools

Navigate to Services → DHCP. Turn the DHCP service ON and create/edit the following four network pools. Click Add or Save for each pool:

Pool 1: HR (VLAN 10)
192.168.10.1
255.255.255.0
192.168.10.10
192.168.40.100
N/A
Pool 2: IT (VLAN 20)
192.168.20.1
255.255.255.0
192.168.20.10
192.168.40.100
N/A
Pool 3: Wireless (Subnet 30)
192.168.30.1
255.255.255.0
192.168.30.10
192.168.40.100
192.168.40.250
Pool 4: Servers (Subnet 40)
192.168.40.1
255.255.255.0
192.168.40.50
192.168.40.100
N/A
Option 43 CAPWAP Binding: In Cisco Packet Tracer, entering the WLC IP address in the "WLC Address" input field inside the DHCP pool configuration handles the Option 43 CAPWAP binding automatically! LAPs leasing an IP from this pool will immediately learn the WLC IP address, contact WLC, and download their SSIDs.

Cisco 3504 Wireless LAN Controller Web UI

Logged in as admin

WLC Controller Initialization

To establish enterprise SSID broadcasts:

  1. Ensure management IP is statically set to 192.168.40.250, Gateway is 192.168.40.1.
  2. Double click WLC-PT, go to Config tab, set Gig0 parameters.
  3. Verify LAP0 registrations: under WLC → Access Points, ensure that LAP0 appears in the registered AP list. (Option 43 from DHCP server makes this happen!).
  4. Create WLAN Profile: Name: Kable WLAN, SSID: Kable.
  5. Enable Security: Go to Security tab → Layer 2, select WPA2-PSK (AES), and configure Passphrase as kable123.
  6. Activate WLAN: Check the "Status" box to set the WLAN profile to Enabled. Apply and Save!
LAP Link: Laptops 0 and 1 must have physical WMP300N wireless modules installed in order to see and associate to WLC broadcasts.
Student Guided Lab Checklist Step-by-step milestones

Tick off each milestone as you configure the live devices in Packet Tracer. This checklist directly increments your overall completion score!

Phase 1: Physical Topology Setup & Connections Pending
Place the physical devices: 5x ISR 4331 Routers, 1x 3560 Multilayer Switch, 1x 2960 Switch, 1x PC-PT PC1, 1x PC-PT PC2, 2x Laptop-PT wireless hosts, 1x Lightweight AP, 1x WLC-PT, 1x DHCP Server, 1x DNS Server.
Connect the routers in a serial chain: R0 to R1, R1 to R2, R2 to R3, and R3 to R4 using twisted pair crossover cables.
Connect Switch 0 to Router 2 Gig0/0/0, Multilayer Switch 0 Gig0/1 to Router 0 Gig0/0/0, and Switch 1 Gig0/1 to Router 4 Gig0/0/0 using copper straight-through cables.
Phase 2: Layer 2 Switch VLANs & Trunk Uplinks Pending
Define VLAN 10 (HR) and VLAN 20 (IT) structures on the Multilayer Switch.
Bind PC1 connected to Fa0/1 as an access port in VLAN 10, and PC2 connected to Fa0/2 in VLAN 20.
Phase 3: Layer 3 Switch SVI Gateway Configuration Pending
Enter global configuration mode on the switch and enable SVI routing using the ip routing command.
Create virtual interface gateways for interface vlan 10 and interface vlan 20, assigning their first usable gateway IPs.
Fulfill transit routing guidelines: Convert interface GigabitEthernet0/1 of the switch into a routed port with no switchport, and assign its /30 transit IP.
Phase 4: WAN Crossover Links & OSPF Area 0 Routing Pending
Assign calculated IP parameters to all WAN crossover interfaces (R0, R1, R2, R3, R4) and verify that interface physical line states light up green!
Configure OSPF dynamic routing area 0 on Multilayer Switch 0 and all 5 routers (Router 0, 1, 2, 3, 4) using wildcard masks matching their subnets.
Verify OSPF routing tables: Run show ip route and ensure that OSPF-learned paths ('O' routes) appear across all nodes.
Phase 5: DHCP Server Setup & Relay mapping Pending
Configure dynamic pools on the centralized DHCP Server (`192.168.40.200`) for VLAN 10, VLAN 20, VLAN 30, and VLAN 40. Include DNS Server and WLC IP option bounds.
Map ip helper-address 192.168.40.200 on MLS SVI VLAN 10, VLAN 20, and Router 2 Gig0/0/0 interfaces to enable DHCP relay functionality.
Toggle PC1 and PC2 IP config from static to DHCP. Verify that they receive proper IPs.
Phase 6: Enterprise WLC & Wireless Laptops association Pending
Access the WLC Web Portal from PC0 (https://192.168.40.250) and establish a WLAN profile. SSID: Kable, Security: WPA2-PSK AES (passphrase: kable123).
Verify that LAP0 receives an IP and establishes its CAPWAP tunnel to the WLC management portal.
Install WMP300N wireless adapters on Laptops 0 and 1, associate them to SSID "Kable", and verify successful lease of 192.168.30.x IP addresses!
Phase 7: Services & End-to-End Connectivity Validation Pending
Add an 'A' record on the DNS Server (`192.168.40.100`) mapping host name www.kable.com to its own IP. Enable DNS services.
Execute successful pings from PC1, PC2, and Wireless Laptops to the DNS Server (`192.168.40.100`).
Open the Web Browser utility on PC1, type www.kable.com, and press Go to successfully display the academic web portal.