Hi @sivam siva ,
The new document is more specific.
When you have not configured any EtherChannel, we could say that it is in off mode.
The on mode is a static mode, because it is not part of any protocol.
EtherChannel protocols are used to manage the formation of the channel, using messages from that protocol.
The new document that you attach this is also indicated:
https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3850/software/release/3se/layer2/configuration_guide/b_lay2_3se_3850_cg/b_lay2_3se_3850_cg_chapter_0101.html#concept_83730B3BF46E4C81B8D5110EA0840311
EtherChannel On Mode
EtherChannel on mode can be used to manually configure an EtherChannel. The on mode forces a port to join an EtherChannel without negotiations. The on mode can be useful if the remote device does not support PAgP or LACP. In the on mode, a usable EtherChannel exists only when the switches at both ends of the link are configured in the on mode.
Ports that are configured in the on mode in the same channel group must have compatible port characteristics, such as speed and duplex. Ports that are not compatible are suspended, even though they are configured in the on mode.
Regards
