1

00:00:00,464  -->  00:00:05,830
In the previous video, we already learn about
the concept of etherchannel.

2

00:00:06,236  -->  00:00:14,508
The point is, etherchannel is used to grouping
multiple physical interface become 1 logical interface.

3

00:00:15,175  -->  00:00:18,967
So spanning tree will not block any interface.

4

00:00:19,605  -->  00:00:27,471
And the bandwidth now become 300mega, because
100mega multiply by 3.

5

00:00:28,790  -->  00:00:40,624
To configure an etherchannel, we have 3 options,
first, we can use LACP, LACP is an open standard,

6

00:00:41,030  -->  00:00:48,020
this is means that LACP can used in all networking
vendor, not just cisco.

7

00:00:50,702  -->  00:00:57,677
The second options is PAGP, PAGP is a cisco
proprietary.

8

00:00:58,214  -->  00:01:03,594
This is means that we only can configure PAGP
in cisco switch.

9

00:01:04,536  -->  00:01:12,619
If we have cisco switch meet with hp switch
let’s say, so we can not use PAGP, we must

10

00:01:12,619  -->  00:01:14,590
use LACP.

11

00:01:15,199  -->  00:01:22,497
But if cisco switch meet with cisco switch,
we can use PAGP or LACP.

12

00:01:24,236  -->  00:01:28,666
And the last option is, we can use layer 3
etherchannel.

13

00:01:29,144  -->  00:01:32,031
This is also an open protocol.

14

00:01:32,640  -->  00:01:37,786
But for now let’s just focus on lacp and
pagp first.

15

00:01:38,235  -->  00:01:43,174
We will learn about layer 3 etherchannel later
in the next video.

16

00:01:44,218  -->  00:01:45,487
Let’s just start.

17

00:01:47,734  -->  00:01:58,358
Open swith 0, enable, configure terminal, and
then go to the interface, in this case the

18

00:01:58,358  -->  00:02:05,912
interface that connected to switch 1 is fa0/1
until fa0/3.

19

00:02:07,463  -->  00:02:12,085
So interface range fa0/1-3.

20

00:02:13,360  -->  00:02:18,333
The first thing that we need to do is configure
the interface as trunk.

21

00:02:19,087  -->  00:02:21,508
So switchport mode trunk.

22

00:02:23,668  -->  00:02:30,428
Okay now fa0/1 until fa0/3 is already trunk.

23

00:02:31,370  -->  00:02:34,523
Next, let’s configure the etherchannel.

24

00:02:35,000  -->  00:02:42,305
The command is channel-group question mark,
here we have an option 1 until 6,

25

00:02:42,653  -->  00:02:45,000
this is the etherchannel id.

26

00:02:45,768  -->  00:02:54,753
In this case let’s say I use 1, then mode,
and then question mark again, okay here we

27

00:02:54,753  -->  00:02:57,460
have some options for the mode.

28

00:02:58,155  -->  00:03:04,902
If we want to configure etherchannel LACP,
the option is active and passive,

29

00:03:05,670  -->  00:03:13,021
but if we want to configure etherchannel PAGP, the option
is auto and desirable.

30

00:03:13,876  -->  00:03:21,567
In this video, we are going to configure lacp
first, so the option is active and passive.

31

00:03:22,553  -->  00:03:29,858
If we use mode active, so the switch will
invite the neighbor to activate the etherchannel.

32

00:03:30,524  -->  00:03:37,162
But if we use passive, this is means that
the switch will wait for invitation from the

33

00:03:37,162  -->  00:03:38,205
neighbor.

34

00:03:39,249  -->  00:03:44,202
So we need to configure at least 1 switch
to become active.

35

00:03:45,303  -->  00:03:53,095
For example switch 0 active and switch 1 passive,
the etherchannel will up.

36

00:03:54,081  -->  00:04:01,841
But if we configure switch 0 passive and switch 1
also passive, the etherchannel will not up.

37

00:04:02,522  -->  00:04:07,641
How if we configure switch 0 to active and
switch 1 also active?

38

00:04:08,395  -->  00:04:11,188
Absolutely the etherchannel also up.

39

00:04:12,594  -->  00:04:16,999
Okay, let’s say here we want to configure
switch 0 to active.

40

00:04:18,303  -->  00:04:22,337
Now we have done configuring etherchannel
on switch 0.

41

00:04:23,062  -->  00:04:26,861
Next let’s configure etherchannel in the
switch 1.

42

00:04:28,745  -->  00:04:37,053
Enable, configure terminal, and then interface
range fa0/1-3.

43

00:04:38,357  -->  00:04:44,856
First let’s configure the interface to trunk,
so switchport mode trunk.

44

00:04:45,755  -->  00:04:56,403
Next let’s configure the etherchannel, channel-group,
and for the id, we must use the same id as switch 0.

45

00:04:56,852  -->  00:05:01,848
In the switch 0 we use id 1, so here
we need to use 1.

46

00:05:03,109  -->  00:05:10,322
For the mode, because switch 0 is active, so
here we can use active or passive.

47

00:05:13,206  -->  00:05:15,184
Let’s try to use passive.

48

00:05:17,445  -->  00:05:23,219
Okay now we have done configuring etherchannel,
let’s fast forward time.

49

00:05:24,857  -->  00:05:28,925
Okay here we can see that now all interface
is green.

50

00:05:29,679  -->  00:05:34,339
This is means that there is no interface blocked
by spanning tree.

51

00:05:35,223  -->  00:05:40,549
For the testing, we can use command do show
etherchannel summary.

52

00:05:43,505  -->  00:05:51,946
Here we can se po1, po is port channel, and
1 is the id that we have configured.

53

00:05:53,381  -->  00:06:01,726
Here we have uppercase S and uppercase U.
Uppercase s means layer 2, and uppercase u

54

00:06:01,726  -->  00:06:03,208
means in use.

55

00:06:06,396  -->  00:06:15,077
The protocol is LACP, and the port is fa0/1
until fa0/3.

56

00:06:15,584  -->  00:06:23,118
And all of the interface is uppercase P, uppercase
P means in port channel.

57

00:06:24,031  -->  00:06:27,495
Okay, so the etherchannel in switch 0 is ok.

58

00:06:28,118  -->  00:06:30,541
Let’s also check on switch 1.

59

00:06:31,179  -->  00:06:43,492
Do show etherchannel summary, here we can
see po1, uppercase S and uppercase U, uppercase S

60

00:06:43,492  -->  00:06:47,380
means layer 2, and uppercase U means in
use.

61

00:06:47,975  -->  00:06:58,207
The protocol is LACP, the interface is fa0/1-3,
and all of the interface is uppercase P,

62

00:06:58,584  -->  00:07:01,580
uppercase P means in port channel.

63

00:07:02,826  -->  00:07:05,720
Okay so now the etherchannel is up.

64

00:07:06,532  -->  00:07:11,660
Let’s add 2 pc to make sure that the etherchannel
is really ok.

65

00:07:19,487  -->  00:07:35,157
Configure the ip address, here 192.168.1.1,
and then this is 192.168..1.2.

66

00:07:39,360  -->  00:07:41,832
Now let’s test the ping.

67

00:07:48,267  -->  00:07:51,645
Okay here we can see that the ping is success.

68

00:07:52,674  -->  00:07:58,685
Okay I think enough for this video, in the
next video, we are going to learn how to configure

69

00:07:58,685  -->  00:08:00,983
etherchannel pagp.

70

00:08:01,577  -->  00:08:05,064
Thankyou for watching and see you on the next
video.