For LACP enabled ports, ESI is automatically assigned. This ESI will have a value of 0x01 in the first octet. ESI values are auto derived using the system MAC and the port key as parameters. This value will be the same for a multi-homed host, there by ensuring that the various ports are in the same ES with the same ESI. LACP can only be assigned to port-channel interfaces.
Use the lacp auto command to indicate that ESI must be assigned automatically.