Netgear GSM7228PS - ProSAFE 28 ports Gigabit Ethernet L2 Managed Stackable Switch with PoE 管理者ガイド

Web Interface: Specify the Source (Mirrored) Ports and 
Destination (Probe)

Select Monitoring > Mirroring > Port Mirroring. A screen similar to the following 
displays.

Scroll down and select the Source Port 1/0/2 check box. The value 1/0/2 now appears in the 
Interface field at the top.

Enter the following information:

In the Destination Port field, enter 1/0/3.

In the Session Mode field, select Enable. 

Click Apply.

Dual Image

Traditionally switches contain a single image in the permanent storage. This image is loaded 
into memory every time there is a reboot. The dual image feature allows switches to have two 
images in permanent storage. You can denote one of these images as an active image that 
will be loaded in subsequent reboots and the other image as a backup image. This feature 
provides for reduced down time for the switches, when the firmware is being upgraded or 
downgraded. 

The images are stored in the file system with the file names image1 and image2. These 
names are used in the CLI, Web, and SNMP interfaces. Each of the images can be 
associated with a textual description. The switch provides commands to associate and 
retrieve the text description for an image. A switch also provides commands to activate the 
backup image such that it is loaded in subsequent reboots. This activation command makes 
the current active image as the backup image for subsequent reboots. 

On three successive errors executing the active-image, the switch attempts to execute the 
backup-image. If there are errors executing the backup-image as well, the bootloader will 
invoke the boot menu.

The Dual Image feature works seamlessly with the stacking feature. All members in the stack 
must be uniform in their support for the dual Image feature. The Dual Image feature works in 
the following way in a Stack.