Fortinet MR1 - Manual (Page 111)

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port-channel name {<logical slot/port> | all} <name>
<logical slot/port> - Port-Channel Interface number.
all - all Port-Channel interfaces.
<name> - Configured Port-Channel name (up to 15 characters).
Default Setting
None
Command Mode
Global Config
5.2.6.7 adminmode
This command enables a port-channel (LAG) members. The interface is a logical slot and
port for a configured port-channel.
Syntax
adminmode
no adminmode
no - This command disables a configured port-channel (LAG).
Default Setting
Enabled
Command Mode
Interface Config
5.2.6.8 lacp
This command enables Link Aggregation Control Protocol (LACP) on a port.