we have 2 type of Ether channel protocol:

  • PAGP(port aggregation protocol),cisco
  • LACP(link aggregation control protocol),IEEE 802.1 AD

 

  • configuration on switch 1:

 

switch(config)#interface fastethernet 0/16

switch(config-if)#channel-protocl{PAGP|LACP}

switch(config-if)#channel-group 1 mode {on|auto|desirable}

switch(config-if)#exit

switch(config)#interface fastethernet 0/15

switch(config-if)#channel-protocl{PAGP|LACP}

switch(config-if)#channel-group 1 mode {on|auto|desirable}

switch(config-if)#exit

 

  • configuration on switch 2:

 

switch(config)#interface fastethernet 0/16

switch(config-if)#channel-protocl{PAGP|LACP}

switch(config-if)#channel-group 1 mode {on|auto|desirable}

switch(config-if)#exit

switch(config)#interface fastethernet 0/15

switch(config-if)#channel-protocl{PAGP|LACP}

switch(config-if)#channel-group 1 mode {on|auto|desirable}

switch(config-if)#exit

switch(config)#interface port-channel 1

switch(config-if)#no shutdown

switch(config-if)#ip address 192.168.1.1 255.255.255.0

 

  • NOTE:ether channel NO. must be the same in both switches