Which mode must be used to configure EtherChannel between two switches without using a negotiation protocol?
The Static Persistence (or on mode) bundles the links unconditionally and no negotiation protocol is used.
In this mode, neither PAgP nor LACP packets are sent or received.
When configuring EtherChannel between two switches, there are several modes available to use: active, on, auto, and desirable.
In this scenario, we are trying to configure EtherChannel without using a negotiation protocol. This means that we must use a static configuration that will not require any negotiation between the switches.
The correct mode to use in this situation is the "on" mode. When the "on" mode is used, the switch port is forced to be a member of an EtherChannel without any negotiation. This means that the port will be a part of the EtherChannel regardless of the other switch's configuration.
The "active" and "desirable" modes both use negotiation protocols (LACP and PAGP, respectively) to dynamically configure the EtherChannel. The "auto" mode will attempt to negotiate with the other switch, but if negotiation fails, the port will still be added to the EtherChannel as an individual link.
Therefore, the "on" mode is the only mode that will allow the configuration of EtherChannel without any negotiation between the switches.