Netgear M4300-24X24F (XSM4348S) - Stackable Managed Switch with 48x10G including 24x10GBASE-T and 24xSFP+ Layer 3 Guia Do Administrador

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Managed Switches 
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.
When an image is activated, the management node notifies all the participating nodes. All 
nodes activate the specified image.
(Netgear Switch) #vlan database
(Netgear Switch) (Vlan)#vlan 5
(Netgear Switch) (Vlan)#exit
(Netgear Switch) #config
(Netgear Switch) (Config)#vlan 5
(Netgear Switch) (Config)(Vlan 5)#remote-span
(Netgear Switch) (Config)(Vlan 5)#exit
(Netgear Switch) (Config)#interface 1/0/3
(Netgear Switch) (Interface 1/0/3)#vlan participation include 5
(Netgear Switch) (Interface 1/0/3)#vlan tagging 5
(Netgear Switch) (Interface 1/0/3)#exit
(Netgear Switch) (Config)#monitor session 1 mode
(Netgear Switch) (Config)#monitor session 1 source remote vlan 5
(Netgear Switch) (Config)#monitor session 1 destination interface 1/0/4
(Netgear Switch) #show monitor session 1
Session Admin   Probe  Src  Mirrored Ref.   Src   Dst   Type  IP      MAC
ID      Mode    Port   VLAN Port     Port   RVLAN RVLAN       ACL     ACL
------- ------- ------ ---- -------- ------ ----- ----- ----- ------- -------
1       Enable  1/0/4                       5