Cisco Catalyst 2950 Software Guide

Contents
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Catalyst 2950 Desktop Switch Software Configuration Guide
78-11380-03
Limitations 9-15
Connecting the Stack Ports 9-15
Understanding BackboneFast 9-17
Understanding Root Guard 9-19
Configuring Basic STP Features 9-20
Default STP Configuration 9-20
Disabling STP 9-21
Configuring the Root Switch 9-21
Configuring a Secondary Root Switch 9-23
Configuring STP Port Priority 9-24
Configuring STP Path Cost 9-25
Configuring the Switch Priority of a VLAN 9-26
Configuring the Hello Time 9-27
Configuring the Forwarding-Delay Time for a VLAN 9-27
Configuring the Maximum-Aging Time for a VLAN 9-28
Configuring STP for Use in a Cascaded Cluster 9-28
Displaying STP Status 9-29
Configuring Advanced STP Features 9-30
Configuring Port Fast 9-30
Configuring BPDU Guard 9-31
Configuring UplinkFast for Use with Redundant Links 9-32
Configuring Cross-Stack UplinkFast 9-33
Configuring BackboneFast 9-34
Configuring Root Guard 9-34
CHAPTER 10 Configuring the Switch Ports 10-1
Changing the Port Speed and Duplex Mode 10-1
Connecting to Devices That Do Not Autonegotiate 10-2
Setting Speed and Duplex Parameters 10-2
Configuring IEEE 802.3X Flow Control 10-3
Configuring Flooding Controls 10-4
Enabling Storm Control 10-4
Disabling Storm Control 10-5
Configuring Protected Ports 10-5
Enabling Port Security 10-6
Defining the Maximum Secure Address Count 10-7
Enabling Port Security 10-7
Disabling Port Security 10-8

Cisco Catalyst 2950 Specifications

General

Forwarding Bandwidth	8.8 Gbps
Switching Capacity	13.6 Gbps
Forwarding Rate	6.6 Mpps
Weight	3.6 kg
RAM	16 MB
Flash Memory	8 MB
Operating Humidity	10% to 85% non-condensing
Uplink Ports	2 x 10/100/1000Base-T
Dimensions	4.4 cm x 44.5 cm x 24.2 cm
Remote Management Protocol	SNMP, Telnet, HTTP
Features	Quality of Service (QoS), VLAN support
Compliant Standards	IEEE 802.3, IEEE 802.3u, IEEE 802.1D, IEEE 802.1Q, IEEE 802.1p
Status Indicators	system
Operating Temperature	0 to 45°C
Ports	24 x 10/100 Ethernet ports
MAC Address Table Size	8, 192 entries
Power Supply	Internal 100-240V AC, 50-60Hz