Cisco Catalyst 2950 Command Reference

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Catalyst 2950 and Catalyst 2955 Switch Command Reference
OL-10102-01
Chapter 1 Using the Command-Line Interface
CLI Command Modes
User EXEC Mode
After you access the device, you are automatically in user EXEC command mode. The EXEC commands
available at the user level are a subset of those available at the privileged level. In general, use the user
EXEC commands to change terminal settings temporarily, to perform basic tests, and to list system
information.
The supported commands can vary depending on the version of software in use. To view a
comprehensive list of commands, enter a question mark (?) at the prompt.
Switch> ?
Privileged EXEC Mode
Because many of the privileged commands configure operating parameters, privileged access should be
password-protected to prevent unauthorized use. The privileged command set includes those commands
contained in user EXEC mode, as well as the configure command through which you access the
remaining command modes.
If your system administrator has set a password, you are prompted to enter it before being granted access
to privileged EXEC mode. The password does not appear on the screen and is case sensitive.
The privileged EXEC mode prompt is the device name followed by the pound sign (
#).
Switch#
Enter the enable command to access privileged EXEC mode:
Switch> enable
Switch#
The supported commands can vary depending on the version of software in use. To view a
comprehensive list of commands, enter a question mark (?) at the prompt.
Switch# ?
To return to user EXEC mode, enter the disable command.
VLAN
configuration
From privileged EXEC mode,
enter the vlan database
command.
Switch(vlan)#
To exit to privileged EXEC mode,
enter the exit command.
Line configuration From global configuration mode,
specify a line by entering the line
command.
Switch(config-line)#
To exit to global configuration mode,
enter the exit command.
To return to privileged EXEC mode,
enter the end command, or press
Ctrl-Z.
Table 1-1 Command Modes Summary (continued)
Command Mode Access Method Prompt Exit or Access Next Mode

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