Lab – Configuring and Verifying Router Interfaces


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Addressing Table

Device

Interface

IP Address

Subnet Mask

Default Gateway

Remarks

Router1

G0/0

172.16.0.0

255.255.255.0

N/A

 
 

G0/1

172.16.1.0

255.255.255.0

N/A

 
 

S0/0/0

192.168.0.1

255.255.255.252

N/A

DCE

Router2

G0/0

172.16.2.1

255.255.255.0

N/A

 
 

G0/1

172.16.3.1

255.255.255.0

N/A

 
 

S0/1/0

192.168.0.2

255.255.255.252

N/A

 

PC1

NIC

172.16.0.2

255.255.255.0

172.16.0.1

 

PC2

NIC

172.16.0.3

255.255.255.0

172.16.0.1

 

PC3

NIC

172.16.1.2

255.255.255.0

172.16.1.1

 

PC4

NIC

172.16.1.3

255.255.255.0

172.16.1.1

 

PC5

NIC

172.16.2.2

255.255.255.0

172.16.2.1

 

PC6

NIC

172.16.2.3

255.255.255.0

172.16.2.1

 

PC7

NIC

172.16.3.2

255.255.255.0

172.16.3.1

 

PC8

NIC

172.16.3.3

255.255.255.0

172.16.3.1

 

Objectives

Part 1: Display Router Information

Part 2: Configure Router Interfaces

Part 3: Verify the Configuration

Background

In Part-1 you will use different show commands to know about the router hardware and its current state. After knowing about router hardware use the Addressing Table to configure router Ethernet interfaces. After configuration, it is necessary to verify and test your configurations

Part 1: Display Router Information

Open a device CLI tab to access the command line directly. All password on the router set to Cisco. Use different commands to answer the following questions.

  • Which command displays the statistics for all interfaces on the router?
  • Which command displays the information about a specific interface only?
  • Which command is used to display the IP address of a specific router interface?
  • What is the bandwidth on the Serial 0/0/0 interface of the router1?
  • What is the MAC address of the Gigabit Ethernet 0/1 interface on both router?
  • What is the bandwidth on the Gigabit Ethernet 0/1 interfaces on both router?
  • Which command displays a brief summary of the current interfaces, statuses, and IP addresses assigned to them?
  • How many serial interfaces are there on both routers?
  • How many Ethernet interfaces are there on both routers?
  • What command shows the content of the routing table?
  • How many are directly connected routes there with Router1?

Part 2: Configuring Router Interfaces

Step 1: Configure the Gigabit Ethernet 0/0 interface on R1.

a. Enter the following commands to address and activate the GigabitEthernet 0/0 interface on Router1:

Router Interfaces

 

b. Router1 should now be able to ping PC3 and PC4.

Router Interfaces

 

Step 2: Configure the remaining Gigabit Ethernet Interfaces on on both router using the information in the addressing table. For each interface configure the IP Address and description.

Step 3: Back up the configurations to NVRAM:

Save the configuration files on both routers to NVRAM. Using the copy and wr commands.

Part 3: Verify the Configuration

Step 1: Use verification commands to check your interface configurations.

  • Use the show ip interface brief command on both routers verify that the interfaces are configured with the correct IP address and active.

How many interfaces on both routers are configured with IP addresses and in the “up” and “up” state?

What part of the interface configuration is NOT displayed in the command output?

What commands can you use to verify this part of the configuration?

  • Use the show ip route command on both router view the current routing tables.
  • How many directly connected routes on each router and what is the code of directly connected routes?
  • How many EIGRP routes on each router and what is the code of EIGRP Routers?
  • If the router knows all the routes in the network, then the number of connected routes and dynamically learned routes (EIGRP) should equal the total number of LANs and WANs.
  • Does this number match the number of C and D routes shown in the routing table?

Step 2: Test end-to-end connectivity across the network.

If all routes are equal to the total of LANs and WANs then You should now ping from any PC to any other PC on the topology.

  • From the command line on PC1, ping PC7.
  • From the command line on R3, ping PC6.
 
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