Netgear M4100-12G-POE+ (GSM7212P) - 12-Port Managed Gigabit Switch Guide De Logiciel

Managed switch software references physical entities such as cards and ports by using a 
slot/port naming convention. The software also uses this convention to identify certain logical 
entities, such as port-channel interfaces.

The slot number has two uses. In the case of physical ports, it identifies the card containing 
the ports. In the case of logical and CPU ports it also identifies the type of interface or port.

The port identifies the specific physical port or logical interface being managed on a slot.

In the CLI, loopback and tunnel interfaces do not use the slot/port 
format. To specify a loopback interface, you use the loopback ID. To 
specify a tunnel interface, you use the tunnel ID.

The no keyword is a specific form of an existing command and does not represent a new or 
distinct command. Almost every configuration command has a no form. In general, use the 
no

 form to reverse the action of a command or reset a value back to the default. For example, 

the no shutdown configuration command reverses the shutdown of an interface. Use the 

Physical slot numbers 

Physical slot numbers begin with zero, and are allocated up to the maximum 
number of physical slots.

Logical slot numbers 

Logical slots immediately follow physical slots and identify port-channel (LAG) or 
router interfaces.

CPU slot numbers

The CPU slots immediately follow the logical slots.

Physical Ports

The physical ports for each slot are numbered sequentially starting from zero.

Logical Interfaces

Port-channel or link aggregation group (LAG) interfaces are logical interfaces that 
are only used for bridging functions. 

VLAN routing interfaces are only used for routing functions.

Loopback interfaces are logical interfaces that are always up.

Tunnel interfaces are logical point-to-point links that carry encapsulated packets.

CPU ports

CPU ports are handled by the driver as one or more physical entities located on 
physical slots.