Network Routing Basics 1. You are called to troubleshoot two computers that are

Question

Network Routing Basics
1. You are called to troubleshoot two computers that are not communicating on the same network segment. Your subnet uses network 192.168.110. You check the IP configuration of both computers and get the following information:

Computer 1:
IP address 192.168.110.101
Subnet mask 255.255.255.0
Default gateway 192.168.110.1

Computer 2:
IP address 192.168.111.102
Subnet mask 255.255.255.0
Default gateway 192.168.110.1
Based on the given information, what do you believe is the problem?

2. What command would you use to view the path that a packet takes to get to its destination?

Explanation / Answer

1.TCP/IP network problems are often caused by incorrect configuration of the three main entries in a computer's TCP/IP properties
Incorrect Subnet Mask:
Incorrect IP Address
Incorrect default gateway

The ip addresses can be divided into two parts. Network id and HostId.
The first three part in a IP address forms the network Id where as the last part forms the hostId.
In this case the network id for two computers are:- 192.168.110.0/24 and 192.168.111.0/24 respectively.
So they cannot communicate with each other as they belong to different networks.
This can be fixed by configuring the default gateway correctly.A default gateway serves as an access point or IP router that a networked computer uses to send information to a computer in another network or the Internet

So final configuration after changing the default gateway for computer 1 will be:-

Computer 1:
IP address 192.168.110.101
Subnet mask 255.255.255.0
Default gateway 192.168.111.1

Computer 2:
IP address 192.168.111.102
Subnet mask 255.255.255.0
Default gateway 192.168.110.1

2. Tracert(In windows)/Traceroute(Linux/Mac) coomand can be used to view the path that a packet takes to get to its destination.
Ex:-tracert yourdomain.com (windows)
traceroute yourdomain.com (Linux/Mac)

Related Questions

Navigate

• Browse (All)
• Browse N
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.