10. Configuring a Cisco Router

Question 1

Three tasks a router completes to start operations when powered on.

Answer 1

1. Runs the Power-On-Self-Test (POST).
2. Finds and loads the Cisco IOS Software.
3. Finds and loads the Configuration File if one exists.

Question 2

This type of router interface is very useful because it will never go down unless the entire router goes down.

Answer 2

Loopback Interface.

Question 3

Command to create a loopback interface?

Answer 3

Router(config)# interface loopback 0

Question 4

Command to enable an interface?

Answer 4

Router(config-if)# no shutdown

Question 5

Command to configure an IPv4 address on a Router Interface?

Answer 5

Router(config-if)# ip address (address) (subnet)
Example:
Router(config-if)# ip address 10.0.0.3 255.255.255.0

Question 6

Command to display a brief list of interfaces and their IPv4 addresses?

Answer 6

Router# show ip interface brief

Question 7

Command to display brief details about a particular interface?

Answer 7

Router# show protocols (Type) (Interface-Identifier)
Example:
Router# show protocols Ethernet 0/1

Question 8

Command to display details about all the interfaces?

Answer 8

Router# show interfaces

Question 9

Interface status code for an interface with a shutdown command that is configured on it?

Answer 9

administratively down, down.

Question 10

Interface status code for an interface with a “no shutdown” command configured, but the physical layer has a problem.

Answer 10

down, down.

Question 11

Interface status code for an interface with a data link layer problem?

Answer 11

up, down.

Question 12

Interface status code for an interface that is fully functional?

Answer 12

up, up.

Question 13

Command to display information about a router’s neighboring device(s)?

Answer 13

Router# show cdp neighbors

Question 14

Command to display information about a router’s neighboring device(s) in full.

Answer 14

Router# show cdp neighbors detail

Question 15

Command to disable cdp globally on a router?

Answer 15

Router# no cdp run

Question 16

Command to disable cdp on a single interface?

Answer 16

Router(config-if)# no cdp enable

Question 17

Command to enable lldp globally on a router?

Answer 17

Router(config)# lldp run

Question 18

Command to enable lldp on a single interface?

Answer 18

Router(config-if)# lldp transmit

Router(config-if)# lldp receive

Question 19

Command to display information about non-cisco neighboring equipment?

Answer 19

Router# show lldp neighbors