Common Config

Question 1

How to you save the candidate config to text file?

Answer 1

from configuration mode;

save <filename></filename>

Saves from current hierarchy down. Sticks file into users working dir by default (eg, /var/home/root)

Can also save <path/filename>
and save ftp://x.x
save scp://x.x

Question 2

what does load merge do?

Answer 2

combines the current config with whatever config is in the file you specify

Question 3

What does load override do?

Answer 3

has to be run from top of the config heirarchy. completely force loads the specified config file overwriting all existing config.

Question 4

what does load patch do?

Answer 4

adds or removes variables in the config. Takes contextual diff input, which could be generated by show | compare save

Question 5

how do you load config from terminal?

Answer 5

load terminal

Paste in then CTRL+D to end

Question 6

what does the relative keyword do when loading?

Answer 6

by default the config you load needs to have the full edit paths…

relative allows the config to be applied to the hierarchy you’re in without the full paths.

Question 7

How can you add config to the middle of a list of things?

Answer 7

insert term <thing1> before|after term <thing2></thing2></thing1>

Question 8

whats the factory default login details?

Answer 8

root, no password

Question 9

how do you restore the factory config?

Answer 9

load factory-default – puts config in candidate
set system root-authentication plain-text-password – set the root password
commit

Question 10

How do you shut a chassis down?

Answer 10

request system halt - leaves the box powered on, console activity reboots
request system power-off - turns the whole box off

on dual RE boxes;

request system halt both-routing-engines – will shut both RE’s down at the same time.

Question 11

What does request system halt all-members do?

Answer 11

in EX virtual chassis’ setups it turns all the switches in the chassis group off.

Question 12

On a new box, whats first thing you have to configure?

Answer 12

root password;

set system root-authentication plain-text-password

Question 13

whats the default root password policy?

Answer 13

6 chars
a change of case digits or punctuation

Question 14

how are you setting hostname?

Answer 14

configure
edit system
set hostname <hostname>
commit</hostname>

Question 15

how do you set the timezone?

Answer 15

edit system
set timezone <timezonename>
set timezone Europe/London</timezonename>

Question 16

How do you set the time?

Answer 16

From operational mode

set date <YYYYMMDDhhmm.ss></YYYYMMDDhhmm.ss>

Question 17

How do you enable SSH?

Answer 17

edit system
set services ssh root-login allow

Question 18

Can root SSH by default?

Answer 18

NO! has to be permitted

Question 19

How do you set a management IP?

Answer 19

set interface fxp0 unit 0 family inet address 10.0.1.131/27

Question 20

How do you set a static route?

Answer 20

set routing-options static route 10.0.1.0/24 next-hop 10.0.1.129

Question 21

Whats a backup router and how do you configure one?

Answer 21

Its a route that gets used in the event the RE is up but the routing process isn’t running. Makes sure you don’ttop
lose management access if routing dies.

set system backup-router 10.0.1.129 destination 10.0.15.0/24

Question 22

What does no-readvertise on the end of a static route do?

Answer 22

stops it from being redistributed

Question 23

What does the retain command do on a static route?

Answer 23

keeps it in the forwarding table.

Question 24

How do you view the active config?

Answer 24

show configuration

from operational mode

Question 25

Whats the default CLI idle timout? how do you change it?

Answer 25

None set by default.

For the current session:

(Operational:) set cli idle-timeout <n></n>

to set a global default:

(Configure:) set cli login idle-timeout <n></n>

Question 26

How do you set a login message?

Answer 26

set system login message “message goes here”

Question 27

How do you add a rescue config?

Answer 27

(Operational:) request system configuration rescue save

Question 28

How do you restore the rescue config

Answer 28

rollback rescue (Loads it to candidate config)