Dual Image - NETGEAR M4200 Software Administration Manual

(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
ID Mode Port
------- ------- ------ ---- -------- ------ ----- ----- ----- ------- -------
1 Enable 1/0/4

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.
Managed Switches
Src Mirrored Ref.
VLAN Port Port
Tools
410
Src Dst Type IP
RVLAN RVLAN ACL
5
MAC
ACL