Stacking Deployment Introduction
This section provides guidance for constructing a new stack, adding new members, replacing members, or adding new links within a stack. These tasks can be performed in several different ways. This section describes the most common methods. Other methods are discussed in more detail elsewhere in the guide.
Note: Adding new units or new links without spanning
tree protocols (STP) may create loops. Loops cause high traffic in
the affected ports and may cause high CPU usage if the looped
packets are trapped to the CPU. As a result, failure to enable STP
in a stack may have significant impact on traffic in a production
environment. Starting from FastIron release 09.0.00, STP is also
enabled by default.