ZyXEL Communications XS3800-28, User Manual, Page: 203 / 789

Chapter 27 Stacking
XS3800-28 User’s Guide
203
27.3 Stacking Setup
A supported Switch can change between stacking and standalone mode by enabling the Active
switch ( ON / OFF ) in the SYSTEM > Stacking > Stacking Setup screen.
Note: When you change modes, all configurations (except user accounts), including Running
Config , Config1 , Config2 and Custom Default configuration, will be erased. Only user
accounts will be kept after mode changing if saved to a configuration file. The Switch
will reboot with the Stacking/Standalone factory default settings on the current
configuration file. You should back up current configurations if you want to reload
them. Note that a configuration file of a mode (Standalone or Stacking) can only be
applied under the same mode.
Note: When the Switch changes from Standalone mode to Stacking mode, it will use the
static IP address 192.168.1.1 by default; when the Switch changes from Stacking mode
back to Standalone mode, it will use a DHCP-assigned IP address obtained from the
DHCP server. (if the Switch cannot obtain an IP address from the DHCP server, it will use
the default IP 192.168.1.1 until it can get a DHCP-assigned IP)
Stacking will automatically choose a master Switch in a stack but you can overwrite that by actively
forcing a Switch to become a master Switch. In the
SYSTEM > Stacking > Stacking Setup screen, click the
switch on to enable Force Master Mode to choose the master Switch. This master Switch will have the
highest priority over all other stacked Switches even when they have same priority value.
If two or more Switches have Force Master Mode enabled, they have the same System Priority . Then the
Switch with the longest up-time is selected. Uptime is measured in increments of 10 minutes. The Switch
with the higher number of increments is selected. If they have the same uptime, then the Switch with the
lowest MAC address will be the master.
This is the master election priority in a stack system:
1
Active Force Master Mode
2
Highest System Priority
Stacking MAC
Address This field displays the stacking Switch MAC address.
Stacking
Channel 1 This field displays the status of the port stacking channel 1 of the Switch. It will display up for
active or down for inactive.
Stacking
Channel 2 This field displays the status of the port stacking channel 2 of the Switch. It will display up for
active or down for inactive.
System Up Time This field displays how long the Switch has been running since it last restarted or was turned on.
Stacking Up
Time This field displays the time that the active Switch has been running in a stack.
The master Switch records the time when a Switch in Stacking mode joins the stacking system.
Time count will restart when master Switch changes.
ZyNOS Version
*Running / Flash This field displays the ZyNOS firmware that is currently running on the Switch.
Table 83 SYSTEM > Stacking > Stacking Status > Stacking Status Details (continued)
LABEL DESCRIPTION