1

00:00:01,528  -->  00:00:06,983
In the previous video, we already learn about
some basic cisco command,

2

00:00:07,250  -->  00:00:12,925
we also already learn how to configure an ip address in the
cisco router.

3

00:00:13,480  -->  00:00:19,209
Next in this video, I will show you how to
save configuration in cisco.

4

00:00:19,809  -->  00:00:21,861
Let’s start with the switch.

5

00:00:22,394  -->  00:00:26,050
Here let’s enable, and then show run.

6

00:00:27,000  -->  00:00:30,169
Okay here we don’t configure anything yet.

7

00:00:30,647  -->  00:00:34,606
For testing, let’s try to configure a hostname.

8

00:00:34,983  -->  00:00:38,660
Let’s say the hostname is sw like this.

9

00:00:39,749  -->  00:00:42,664
Now let’s try to restart the switch.

10

00:00:43,120  -->  00:00:47,223
To restart the switch, we can use command
do reload.

11

00:00:48,212  -->  00:00:55,943
Here we get a question system configuration
has been modified, save, yes or no.

12

00:00:56,287  -->  00:01:03,000
If we choose yes, the configuration will be saved,
but in this case, we will choose no.

13

00:01:03,610  -->  00:01:09,728
Here I want to show you the case how if suddenly
our switch is restarted,

14

00:01:10,150  -->  00:01:13,658
let’s say there is a problem with electricity.

15

00:01:14,058  -->  00:01:16,964
So the switch will be shutdown or restart.

16

00:01:18,214  -->  00:01:26,100
Okay here the booting is done, let’s enter,
and here we can see that the hostname is back

17

00:01:26,100  -->  00:01:27,412
to the default

18

00:01:28,168  -->  00:01:34,565
This is what will be happened if the cisco
devices is suddenly shutdown or restart.

19

00:01:35,065  -->  00:01:37,281
The configuration will be gone.

20

00:01:38,414  -->  00:01:44,780
For another example, let’s try to add a
router, we will not using this one,

21

00:01:44,869  -->  00:01:48,256
because we already have many configuration here.

22

00:01:49,178  -->  00:02:00,564
Okay let’s import a new router, choose no
here, enable to go to privilege mode,

23

00:02:00,564  -->  00:02:04,823
and conf t to go to global configuration mode.

24

00:02:05,723  -->  00:02:13,553
Here let’s configure the hostname, let’s
say the hostname is R, and then let’s also

25

00:02:13,553  -->  00:02:15,388
configure the password.

26

00:02:16,921  -->  00:02:23,125
Here if we try to show run, we can see the
configuration that we already do, which is

27

00:02:23,125  -->  00:02:25,813
hostname and enable secret.

28

00:02:26,268  -->  00:02:31,923
After doing configuration like this, let’s
say suddenly the electricity is down,

29

00:02:32,301  -->  00:02:34,799
so our router must be shutdown right?

30

00:02:35,677  -->  00:02:41,008
Okay let’s try to shutdown the router, here
we can go to physical.

31

00:02:41,286  -->  00:02:44,758
And here we can see on off button.

32

00:02:45,447  -->  00:02:49,562
Let’s click the button, and now the router
is shutdown.

33

00:02:50,040  -->  00:02:54,236
So let’s say now there is a problem with
the electricity.

34

00:02:55,125  -->  00:02:58,082
And then now let’s turn on the router again.

35

00:02:58,816  -->  00:03:04,683
Now let’s go to cli again, here let’s
wait for the booting process.

36

00:03:08,704  -->  00:03:16,204
Okay the booting is done, and now if we see
here, the hostname is back to the default,

37

00:03:16,871  -->  00:03:21,841
and if we try to enable, we don’t need to
input any password.

38

00:03:22,730  -->  00:03:26,370
The configuration that we already do before
is gone.

39

00:03:27,414  -->  00:03:28,196
Why?

40

00:03:28,196  -->  00:03:34,001
This is because the configuration of cisco
devices is not saved by default.

41

00:03:34,679  -->  00:03:38,903
This is why we need to save the cisco configuration.

42

00:03:40,214  -->  00:03:44,811
Now let’s try to learn how to save the cisco
configuration.

43

00:03:45,556  -->  00:03:53,826
For testing, let’s configure the hostname,
let’s say R. Let’s also configure the password.

44

00:03:55,190  -->  00:03:58,027
Okay, now let’s save the configuration.

45

00:03:58,827  -->  00:04:04,104
To save the configuration in cisco, we can
use write command.

46

00:04:04,615  -->  00:04:07,315
Okay now the configuration is saved.

47

00:04:08,103  -->  00:04:12,610
Now let’s shutdown the router, and then
turn on again.

48

00:04:14,299  -->  00:04:18,636
Let’s go to CLI, wait for a second for booting.

49

00:04:22,114  -->  00:04:27,209
And okay here we can see that the configuration
is not gone.

50

00:04:28,009  -->  00:04:35,427
The hostname is still R and if we try to enable,
here we need to input the password.

51

00:04:35,904  -->  00:04:39,828
This is means that the configuration is already
saved.

52

00:04:41,150  -->  00:04:43,502
Okay I think enough for this video

53

00:04:43,613  -->  00:04:47,041
Thankyou for watching and see you on the next video.