Netgear M4300-52G (GSM4352S) - Stackable Managed Switch with 48x1G and 4x10G including 2x10GBASE-T and 2xSFP+ Layer 3 软件指南

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Switching Commands 
432
M4200 and M4300 Series ProSAFE Managed Switches 
Protected Ports Commands
This section describes commands you use to configure and view protected ports on a switch. 
Protected ports do not forward traffic to each other, even if they are on the same VLAN. 
However, protected ports can forward traffic to all unprotected ports in their group. 
Unprotected ports can forward traffic to both protected and unprotected ports. Ports are 
unprotected by default.
If an interface is configured as a protected port, and you add that interface to a Port Channel 
or Link Aggregation Group (LAG), the protected port status becomes operationally disabled 
on the interface, and the interface follows the configuration of the LAG port. However, the 
protected port configuration for the interface remains unchanged. Once the interface is no 
longer a member of a LAG, the current configuration for that interface automatically becomes 
effective.
switchport protected (Global Config)
Use this command to create a protected port group. The groupid parameter identifies the 
set of protected ports. Use the name parameter to assign a name to the protected port group. 
The name can be up to 32 alphanumeric characters long, including blanks. The default is 
blank.
Note:
Port protection occurs within a single switch. Protected port 
configuration does not affect traffic between ports on two different 
switches. No traffic forwarding is possible between two protected 
ports.
no switchport protected (Global Config)
Use this command to remove a protected port group. The groupid parameter identifies the 
set of protected ports. The name parameter specifies the name to remove from the group.
Default
unprotected
Format
switchport protected groupid name name
Mode
Global Config
Format
no switchport protected groupid name name
Mode
Global Config