Etherchannel protocols

When it comes to making etherchannels on cisco-switches there are three flavors you can choose from when it comes to using negotiation protocols:

LACP
- mode active
- mode passive

PAGP
- mode desirable
- mode auto

None
- mode on

No negotiation protocols (only choice is on):

Switch1 :
interface FastEthernet0/10
channel-group 1 mode on
!
interface FastEthernet0/11
channel-group 1 mode on
!
interface Port-channel1
switchport mode dynamic desirable

Switch2 :
interface FastEthernet0/10
channel-group 1 mode on
!
interface FastEthernet0/11
channel-group 1 mode on
!
interface Port-channel1
switchport mode dynamic desirable

LACP protocol (choices are active or passive), you need to have at least one side active. Preferrably set both sides to active:

Switch1 :
interface FastEthernet0/10
channel-group 1 mode active
!
interface FastEthernet0/11
channel-group 1 mode active
!
interface Port-channel1
switchport mode dynamic desirable

Switch2 :
interface FastEthernet0/10
channel-group 1 passive
!
interface FastEthernet0/11
channel-group 1 passive
!
interface Port-channel1
switchport mode dynamic desirable

PAGP protocol (choices are desirable or auto), you need to have at least one side desirable. Preferrably set both sides to desirable:

Switch1 :
interface FastEthernet0/10
channel-group 1 mode desirable
!
interface FastEthernet0/11
channel-group 1 mode desirable
!
interface Port-channel1
switchport mode dynamic desirable

Switch2 :
interface FastEthernet0/10
channel-group 1 auto
!
interface FastEthernet0/11
channel-group 1 auto
!
interface Port-channel1
switchport mode dynamic desirable