Port aggregation protocol (PAgP)
Port Aggregation Protocol (PAgP) is a Cisco proprietary protocol which is used for the
automated, logical aggregation of Ethernet switch ports, known as an Ether Channel.Switch1 Configuration
interface Port-channel1
switchport trunk encapsulation dot1q
switchport mode trunk
interface FastEthernet0/1
switchport trunk encapsulation dot1q
switchport mode trunk
channel-protocol pagp
channel-group 1 mode auto
interface FastEthernet0/2
switchport trunk encapsulation dot1q
switchport mode trunk
channel-protocol pagp
channel-group 1 mode auto
Switch2 Configuration
interface Port-channel2
switchport trunk encapsulation dot1q
switchport mode trunk
interface FastEthernet0/1
switchport trunk encapsulation dot1q
switchport mode trunk
channel-protocol pagp
channel-group 2 mode desirable
interface FastEthernet0/2