Lab 4 3: Packet Tracer 2 Router Lab - Hsanokklis/2023-2024-Tech-journal GitHub Wiki

Objective: Identify the need for routing protocols and their role in internetworks with multiple routers.

Goals:

Observe the need and purpose and routing protocols
Extend the switched network from the previous lab to include a second router
Configure RIP to support route propagation for non-directly connected networks.

Set up

Set up 2 PCs

PC5

IP address: 30.30.30.105

default gateway: 30.30.30.1

netmask: 255.255.255.0

PC6

IP address: 30.30.30.106

default gateway: 30.30.30.1

netmask: 255.255.255.0

Set up a 2950-24 switch

Set up a 1841 router

IP address on FA0/0 is 30.30.30.1

This will be the default gateway for the LAN

Fully configured 30.30.30.0/24 network

PC5 and PC6 can both ping each other and the router

Preparing to connect the 2 Routers - Save Configuration

The routers will be connected via serial cables

Save the current configuration on the routers

Go to CLI and get to router#

Type copy start run

This saves the running configuration (recent changes) to the startup configuration- so the changes will persist after a reboot

TROUBLESHOOTING: to get to router# from Router> you type enable

Add serial ports to the routers

Select Physical tab on the router
Power the router off
Drag the WIC-1T interface card into
turn power back on

the slot is on the left

Connecting the Routers

Connect the Routers via Serial cable

Configure the serial connection

they are configured with a subnetmask of /30 because that allows for 2 devices which is all we have.

Router0

IP ---> 1.1.1.1

Subnet ---> 255.255.255.252

Router1

IP ---> 1.1.1.2

Subnet ---> 255.255.255.252

The fully set up network

Testing Communication

PC0 to PC4 should be able to ping one another

PC5 and PC6 should be able to ping one another

PC0-4 should not be able to ping PC5-6

Go to Router0 CLI and from the Router# type show ip route

SUBMIT (1 Point): Record the networks showing up in Router 0's routing table (either via text or screenshot)

The routes are the networks directly connected and Router0 does not know about the 30.30.30.0 network

SUBMIT (1 Point): Record the networks showing up in Router 1's routing table (either via text or screenshot)

Need for Routing Protocols

In order for all PCs to be able to communicate, the 2 routers need to be able to communicate their routing information to each other. They can then build their routing tables so packets can be directed to the proper interface.

We will use the Routing Information Protocol (RIP). With RIP, the routers will broadcast their routing tables so that neighboring routers can learn about other networks

Go to Router0

Add the 1.1.1.0, 10.10.10.0 and 20.20.20.0 network

Go to Router1

Add the 30.30.30.0 and 1.1.1.0 networks

save the configuration with copy run start on both routers

Validate Routing Tables and RIP

SUBMIT (1 Point) Screenshot of routing table (show ip route) on Router 0 showing all of the networks listed

SUBMIT (1 Point) Screenshot of routing table on Router 1 showing all of the networks listed

SUBMIT (1 Point) Successful ping between PC0 and PC6

Switch to Simulation Mode (stopwatch icon in lower right)

Start a capture
find a RIP packet from Router0 to Router1

Click the colored box to see the packet details

Submit (1 Point) Screenshot of the Inbound PDU Details

Submit (1 Point): Answer the following question: What is the Destination IP address (IP Header) of that packet? What does that IP indicate?

Destination IP address of the packet ---> 255.255.255.255

This indicates that its broadcasting to all the networks

Submit (1 Point): Answer the following question: What network information is included in the "Rip Route Packet" section? Why is that information included?

The Rip Route Packet contains information about the packet that is being sent