Kontron MSH8900, User Manual

Page: 46 / 77

MSH8900
www.symkloud.com // 46
3.2.12. Configuring Stacking
Stacking is a method used to create a switch cluster for the functionalities of all switches.
On the MS1300, stacking is not supported, port 1 of the unique switch is available as an additional uplink and port 27 is
unused.
By default, stacking is enabled on the MS2900, all switches have the same priority level, a master switch is selected
by the system, and switch IDs are assigned based on order of detection. Ports 1 and 27 of each switch are dedicated
stack interfaces and cannot be configured otherwise.
When populated with two hubs, a standalone MS2900 will create a stack of two switches (from the left and right
hubs) interconnected with the dedicated interswitch stacking port (port 27).
Up to 16 switches (maximum of 8 MS2900) can be stacked using the dedicated 10GbE stacking ports on the front plate
(port 1) and the dedicated interswitch stacking ports (port 27). The master switch selected by the system manages
the switch cluster.
Two types of topology are supported: ring topology (closed loop) and chain topology (open loop). A ring topology is
recommended for redundancy and performance purposes.
Figure 17: Stacking example using 4 MS2900
The blue cable in Figure 17 closes the loop. If this cable (or any cable involved in the stacking) is removed, the ring
topology becomes a chain topology. Removing a cable between 2 MS2900 will disable their external stacking
capabilities; however, their internal (hub 1 to hub 2) stacking capabilities will be maintained.
To configure a specific stack:
Switch Web UI Switch CLI (serial, SSH, SOL)
Configuration > Stack
Proceed with configuration
Click Save
# configure terminal
(config)# switch stack ?
A list of possible configuration commands
appears
Proceed with configuration