How to Determine If A Cisco Switch port is Operating in Layer 2 or Layer 3 Mode (GNS3 LAB)
In the "How to Determine If A Cisco Switch port is Operating in Layer 2 or Layer 3 Mode (GNS3 LAB)" YouTube video, the speaker demonstrates how to identify the operating mode of a Cisco switch port using the GNS3 software. The process begins with converting a router image into a switch image and adding switch boards. The Idle PC feature is then discussed as a method to save RAM. To check the switch port mode, the speaker recommends using the "show interface fa 1 by 0 switch" command. If the port is in Layer 2 mode, the enabled port will be displayed. To switch it to Layer 3 mode, use the "no switchport" command, which will disable the port, indicating it's a Layer 3 port. To revert it back to Layer 2, use the "switchport mode fa 1 by 0" command.