Redundant Cascade Stacking - Extreme Networks ExtremeSwitching 3600 Series Installation Manual

Installing the Switch
Cascade Up connector physically located at the bottom of the stack. This next unit is designated
Unit 2. The stack is wired upward through the units and the system continues to number in this
manner throughout the stack. In this configuration, the base unit discovers the stack in a cascade up
(stack up) direction. The following illustration shows a cascade up (stack up) configuration.
Figure 4: Cascade up configuration
Note:
Return cable length might vary depending on unit spacing. Ensure you order the proper length
return cable to provide adequate strain relief.

Redundant Cascade Stacking

The ERS 3600 Series allow a stack of up to eight units in a stack. If any single unit fails or if a cable
is accidently disconnected, other units in the stack remain operational without interruption.
In addition to increasing bandwidth, the software uses the cables to provide two paths between
units. If one path breaks the data travels over the remaining path with half the normal inter-switch
bandwidth.
February 2020 Installing Ethernet Routing Switch 3600 Series 30