Cisco Catalyst 2960 Series User Manual

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)
300
Information About Optional Spanning-Tree Features

Cisco Catalyst 2960 Series Specifications

General

Layer	Layer 2
Power over Ethernet (PoE)	Available on some models
RAM	128 MB
Flash Memory	32 MB
MAC Address Table Size	8000
Operating Temperature	0°C to 45°C (32 to 113°F)
Ports	24 or 48 x 10/100/1000