Cisco Catalyst 2950 Command Reference

A-10
Catalyst 2950 and Catalyst 2955 Switch Command Reference
OL-10102-01
Appendix A Catalyst 2955 Alarm Commands
power-supply dual
power-supply dual
Use the power-supply dual global configuration command to set the dual power-supply mode of
operation. Use the no form of this command to return to the default single power-supply mode.
power-supply dual
no power-supply dual
Syntax Description This command has no arguments or keywords.
Defaults By default, the system operates in single-power mode.
Command Modes Global configuration
Command History
Usage Guidelines The Catalyst 2955 switch has two DC power inputs. When the switch is connected to a second DC input
and put in dual power-supply mode, the second power supply provides power to the switch if the primary
supply fails.
When the switch is in dual power-supply mode, you can use the alarm-facility power supply global
configuration command to set alarm options and to monitor for a missing or failed primary power supply.
Examples This example shows how to set the switch in a dual power-supply mode:
Switch(config)# power-supply dual
Related Commands
Release Modification
12.1(12c)EA1 This command was introduced.
Command Description
alarm facility power-supply Sets the switch to monitor for a missing or failed power supply and
sets the alarm options.
show alarm settings Displays environmental alarm settings and options.

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