Sim-Ex™ Lab Simulator for Network+ : Lab Exercises

Design a Home Network with a Router, Access Point, and Wireless Work Stations I

Description: This exercise demonstrates the concept of designing a Home Network with a Router, Access Point, and Wireless Work Stations. -I

A network administration has configured various components of the network as below:

Server Configuration:

IP address	192.168.1.2
Subnet mask	255.255.255.192

DHCP Range on Server:

Start IP	192.168.1.65
Stop IP	192.168.1.128
Subnet mask	255.255.255.192
Default Gateway	192.168.1.1

Access Point (AP1):

SSID	CertExams
WEP	Cert1

Router R1 configuration:

E0: 192.168.1.1
255.255.255.192
S0: 202.100.15.10
Subnet mask: 255.255.255.64

Client Configurations: All workstations have been configured to obtain the IP settings from DHCP server.

It was reported that none of the workstations are able to ping the Router R1’s E0 interface (Default Gateway). The technician had checked all the physical connections are found them to be in order.What is the most likely problem?

Network Diagram:

Solution:

In the above scenario, the DHCP scope was set wrongly on the DHCP Server. The DHCP scope of 192.168.1.65 to 192.168.1.128 corresponds to subnet ID 192.168.1.64 where as the default gateway (192.168.1.1) corresponds to subnet ID 192.168.1.0. By correcting the DHCP scope to 192.168.1.3 to 192.168.1.63 (note that 192.168.1.1 and 192.168.1.2 have been used for static assignment) the problem could be solved.

Instructions:

1. Open the Server configuration window.

2. Change the Start IP to 192.168.1.3 and Stop IP to 192.168.1.62 (Note that 192.168.1.63 is broadcast address and can’t be used. 192.168.1.1 is the IP address of default gateway, and 192.168.1.2 is statically assigned to DHCP Server).

3. Ping to default gateway should success.

Note: Please refer to the SimulationExams.com Sim-Ex™ Lab Simulator for Network+ software to try complete lab with instructions.

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