---------------------------------------------------------------------------
3 1 up UNKNOWN up 10704
3 2 absent absent 0
-- Fan Status --
Unit Bay TrayStatus Fan1 Speed Fan2 Speed
-----------------------------------------------------------------------------------
-
3 1 up up 10031 up 10031
3 2 up up 9929 up 10031
3 3 up up 10031 up 10134
Speed in RPM
Dell#
A change in the stack master occurs when:
• You power down the stack master or bring the master switch offline.
• A failover of the master switch occurs.
• You disconnect the master switch from the stack.
When a stack reloads and all the units come up at the same time; for example, when all units boot up from
flash, all units participate in the election and the master and standby are chosen based on the priority or MAC
address.
When the units do not boot up at the same time, such as when some units are powered down just after
reloading and powered up later to join the stack, they do not participate in the election process even though
the units that boot up late may have a higher priority configured. This happens because the master and
standby have already been elected, hence the unit that boots up late joins only as a member.
When an up and running standalone unit or stack is merged with another stack, based on election, the losing
stack reloads and the master unit of the winning stack becomes the master of the merged stack. For more
details, see sectionsAdd Units to an Existing Stack and Remove a Unit from a Stack. It is possible to reset
individual units to force them to give up the management role or reload the whole stack from the CLI to
ensure a fully synchronized bootup.
Example of Viewing Stack Members
Virtual IP
You can manage the stack using a single IP, known as a virtual IP, that is retained in the stack even after a
failover.
The virtual IP address is used to log in to the current master unit of the stack. Both IPv4 and IPv6 addresses
are supported as virtual IPs.
Use the following command to configure a virtual IP: Dell(conf)#virtual-ip {ip-address | ipv6–
address | dhcp}
Stacking 1014
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