Extreme Networks ExtremeSwitching X440-G2 Series Hardware Installation Manual page 137

Figure 114: Switches Connected to Form a Stack
The following sections introduce you to the basic principles of stacking and provide recommendations
for creating stacks.
More information to answer your questions about stacking and help you plan your configuration is
available on the Extreme Networks GTAC Knowledge
Building Basic Stacks
A stack can be created in either of two ways:
•
In native stacking, switches are connected using either designated Ethernet data ports or dedicated
stacking connectors.
•
In alternate stacking, switches are connected using 10-Gbps Ethernet data ports that have been
configured for stacking. These ports are located either on the switch itself or on option cards
installed on the rear of the switch.
When planning and building your stack, be sure to follow port compatibility and cabling
recommendations as described in this chapter.
See for information about which switch series can be combined to form a stack.
Slot Numbers in Stacks
A switch stack can be thought of as a virtual chassis. Each switch (node) operates as if it were
occupying a slot in a chassis and is controlled by the master. The high-speed stacking links function like
the backplane links of a chassis.
Each switch in the stack is assigned a "slot number" during the initial software configuration of the
stack. Starting at the switch with the console connection, numbers are assigned in numerical order
following the physical path of the connected stacking cables. For example, if you follow the cabling
recommendations presented in and configure a vertical stack from the console on the switch at the top
of the physical stack, the switches will be assigned slot numbers 1 through 8 from the top down.
ExtremeSwitching and Summit Switches: Hardware Installation Guide
Base.
Building Stacks
137