8.1.3.3 Packet Tracer Configuring DHCPv4 Using Cisco IOS Instructions

8.1.3.3%20Packet%20Tracer%20-%20Configuring%20DHCPv4%20Using%20Cisco%20IOS%20Instructions

8.1.3.3%20Packet%20Tracer%20-%20Configuring%20DHCPv4%20Using%20Cisco%20IOS%20Instructions

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Download8.1.3.3 Packet Tracer - Configuring DHCPv4 Using Cisco IOS Instructions
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Packet Tracer - Configuring DHCP Using Cisco IOS
Topology

Addressing Table
Device

Interface

IPv4 Address

Subnet Mask

Default Gateway

G0/0

192.168.10.1

255.255.255.0

N/A

S0/0/0

10.1.1.1

255.255.255.252

N/A

G0/0

192.168.20.1

255.255.255.0

N/A

G0/1

DHCP Assigned

DHCP Assigned

N/A

S0/0/0

10.1.1.2

255.255.255.252

N/A

S0/0/1

10.2.2.2

255.255.255.252

N/A

G0/0

192.168.30.1

255.255.255.0

N/A

R3

S0/0/1

10.2.2.1

255.255.255.0

N/A

PC1

NIC

DHCP Assigned

DHCP Assigned

DHCP Assigned

PC2

NIC

DHCP Assigned

DHCP Assigned

DHCP Assigned

DNS Server

NIC

192.168.20.254

255.255.255.0

192.168.20.1

R1

R2

Objectives
Part 1: Configure a Router as a DHCP Server
Part 2: Configure DHCP Relay
Part 3: Configure a Router as a DHCP Client
Part 4: Verify DHCP and Connectivity

© 2013 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public.

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Packet Tracer - Configuring DHCP Using Cisco IOS

Scenario
A dedicated DHCP server is scalable and relatively easy to manage, but can be costly to have one at every
location in a network. However, a Cisco router can be configured to provide DHCP services without the need
for a dedicated server. As the network technician for your company, you are tasked with configuring a Cisco
router as a DHCP server to provide dynamic allocation of addresses to clients on the network. You are also
required to configure the edge router as a DHCP client so that it receives an IP address from the ISP network.

Part 1: Configure a Router as a DHCP Server
Step 1: Configure the excluded IPv4 addresses.
Configure R2 to exclude the first 10 addresses from the R1 and R3 LANs. All other addresses should be
available in the DHCP address pool.

Step 2: Create a DHCP pool on R2 for the R1 LAN.
a. Create a DHCP pool named R1-LAN (case-sensitive).
b. Configure the DHCP pool to include the network address, the default gateway, and the IP address of the
DNS server.

Step 3: Create a DHCP pool on R2 for the R3 LAN.
a.

Create a DHCP pool named R3-LAN (case-sensitive).

b. Configure the DHCP pool to include the network address, the default gateway, and the IP address of the
DNS server.

Part 2: Configure DHCP Relay
Step 1: Configure R1 and R3 as a DHCP relay agent.
Step 2: Set PC1 and PC2 to receive IP addressing information from DHCP.

Part 3: Configure R2 as a DHCP Client
a. Configure the Gigabit Ethernet 0/1 interface on R2 to receive IP addressing from DHCP and activate the
interface.
Note: Use Packet Tracer’s Fast Forward Time feature to speed up the process or wait until R2 forms an
EIGRP adjacency with the ISP router.
b. Use the show ip interface brief command to verify that R2 received an IP address from DHCP.

Part 4: Verify DHCP and Connectivity
Step 1: Verify DHCP bindings.
R2# show ip dhcp binding
IP address
192.168.10.11
192.168.30.11

Client-ID/
Hardware address
0002.4AA5.1470
0004.9A97.2535

Lease expiration
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© 2013 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public.

Type
Automatic
Automatic

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Packet Tracer - Configuring DHCP Using Cisco IOS

Step 2: Verify configurations.
Verify that PC1 and PC2 can now ping each other and all other devices.

© 2013 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public.

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