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The below configuration should be done on one side of the trunk link, that is on a trunk port of one switch. SW1# configure terminal SW1# interface gigabit 0/1 SW1# switchport mode dynamic desirable SW1# ^z In the above configuration, SW1 is the switch name. ‘#’ denotes privileged EXEC mode or enable mode. "configure terminal" command: This command is used to enter into Global configuration mode. "interface gigabit0/1" command: To enter into interface configuration mode to configure the switch interface G0/1 as trunk port which is connected to the second switch for trunking. "switchport mode dynamic desirable" command: To make this interface G0/1 to initiate negotiation messages and respond to negotaiation messages to dynamically choose to start trunking. "^z" command: same as "end" command. Switchport mode command's Administrative mode options Operational mode is the expected mode after configuring admini...
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