When configuring Etherchannel, if I understand :
- if one switch has mode ON the other should be ON too to form a channel.
-if one switch has mode Desirable, the other switch should either be Auto or Desirable to form a channel
- if one switch has mode Active, the other is passive. will this form an Ether channel ?
***I have heard that it is best practice to stay away from mode ON. I am not sure why ?
SW1(config-if-range)#channel-group 1 mode ?
active Enable LACP unconditionally
auto Enable PAgP only if a PAgP device is detected
desirable Enable PAgP unconditionally
on Enable Etherchannel only
passive Enable LACP only if a LACP device is detected