Cisco Catalyst 2960 Series

The following figure shows a network with normal STP topology.
Figure 29: Network with Normal STP Topology
The following figure demonstrates a potential network problem when the device fails (brain dead) and Bridge
Assurance is not enabled on the network.
Figure 30: Network Loop Due to a Malfunctioning Switch
Consolidated Platform Configuration Guide, Cisco IOS Release 15.2(4)E (Catalyst 2960-X Switches)
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Information About Optional Spanning-Tree Features