In the previous video, we already learn how to configure etherchannel using LACP. 2
Now in this video, we are going to learn how to configure etherchannel using PAGP. 3
Let’s just start. 4
First, let’s import new switch, let’s say here we use layer 3 switch, which is 3560. 5
Now let’s connecting the new switch to switch 1. 6
Here we can see that we have blocking port in multi layer switch. 7
We will configure an etherchannel here soo all interface will active. 8
In this case, we are going to use PAGP. 9
Let’s start the configuration, open switch 1, here we can see that the interface connected 10
to multi layer switch is fa0/5 until fa0/7. 11
So here interface range fa0/5-7, switchport mode trunk, remember that we need to configure 12
the interface as trunk first before configuring etherchannel. 13
Next let’s configure the etherchannel, so channel-group and then the id, 14
remember that id 1 is already used for interface that connected to switch 0, so here we can not use 1 anymore, 15
let’s say here we will use 2. 16
Mode, question mark. 17
Here we can see that for PAGP we can use mode auto or desirable. 18
This is same as active and passive in LACP, auto is waiting for invitation from the neighbor, 19
and desirable will invite the neighbor to activate etherchannel. 20
So if desirable meet with auto, the etherchannel will up, desirable meet with desirable, 21
the etherchannel will also up, but if auto meet with auto, the etherchannel will not up. 22
In this case, let’s configure switch 1 to desirable. 23
Okay now we have done configuring etherchannel in switch 1, next let’s configure etherchannel 24
in multi layer switch. 25
Here we can see that the interface is fa0/1 until 3. 26
No, enable, configure terminal, interface range fa0/1-3. 27
And then switchport mode trunk. 28
Okay here we can see that we get an error “command rejected”. 29
Remember that if we configure trunk in multi layer switch, we must define the encapsulation first. 30
So here switchport trunk encapsulation dot1q, and then switchport mode trunk. 31
Okay here we can see that we don’t get an error anymore. 32
Next, let’s configure the etherchannel. 33
So here channel-group 2, remember that in switch1, we use id 2, so here we must use 34
id 2. 35
Mode, in the switch 1 we use mode desirable, so here we are free to use desirable again 36
or auto. 37
In this case we will use desirable again. 38
Okay now we have done configuring etherchannel, fast forward time. 39
Here we can see that all of interface is green, let’s check in switch 1, do show etherchannel 40
summary. 41
Here we have po2, uppercase s uppercase u, this is means layer 2 and in use, 42
the protocol is pagp, the port is fa0/5 until 7, and all of the port is P, this is means in port channel. 43
Let’s also check in the multi layer switch, do show etherchannel summary. 44
Here we also have po2, uppercase s and uppercase u, this is means layer 2 and in use, the protocol 45
is pagp, and the interface is fa0/1 until 3. 46
And all of the interface is in port channel. 47
Okay so now the etherchannel between switch 1 and multi layer switch is up. 48
Let’s add a pc for testing, connecting the pc to multi layer switch, and configure the 49
ip address, let’s say 192.168.1.3 50
Let’s ping from pc 1 to pc , okay success, from pc 2 to pc 0, also success. 51
Okay so now we have done configuring the etherchannel using PAGP, and the etherchannel is up! 52
I think enough for this video 53
Thankyou for watching and see you on the next video.