topic 8 : basic router configuration

Question 1

basic router configuration steps (1)

Answer 1

1) configure the device name (hostname)

2) secure privileged EXEC mode (enable secret password)

3) secure user EXEC mode (line console 0)

4) secure remote Telnet / SSH access (line vty 0 4)

Question 2

basic router configuration steps (2)

Answer 2

5) encrypt all plaintext passwords (service password encryption)

6) provide legal notification and save the configuration (banner motd)

7) commands for basic router config on R1 (exit)

8) config is saved to NVRAM (copy run start)

Question 3

config router interfaces commands

Answer 3

interface
description (add information about the network connected to the interface)
IP address
ipv6 address
no shutdown (activates the interface)

Question 4

how to verify interface configuration?

Answer 4

• do “show ip interface brief” for ipv4
• do “show ipv6 interface brief” for ipv6

it displays all interfaces, their IP addresses and their current status

Question 5

what is show IP route/show ipv6 route command

Answer 5

displays the contents of the IP routing tables stored in the RAM

Question 6

what is the command to display ipv4 statistics for all interfaces on the router?

Answer 6

show IP interfaces

Question 7

what is the command to display the ipv6 statistics for all interfaces on a router?

Answer 7

show ipv6 interfaces

Question 8

show interfaces

Answer 8

displays statistics for all interfaces on the device, only displays the ipv4 addressing information

Question 9

what is the default gateway used for?

Answer 9

• when a host sends a packet to a device on another network
• DGW address is generally the router interface address attached to the local network of the host

Question 10

default gateway on a switch

Answer 10

• a switch must have a default gateway address configured to remotely manage the switch from another network

to configure an ipv4 DGW : use IP default-gateway ip-address global config command