Cisco Catalyst 2950 Command Reference

B-22
Catalyst 2950 and Catalyst 2955 Switch Command Reference
OL-10102-01
Appendix B Catalyst 2950 and 2955 Switch Boot Loader Commands
set
Defaults The environment variables have these default values:
MANUAL_BOOT: No (0)
BOOT: Null string
ENABLE_BREAK: No (Off or 0) (the automatic boot process cannot be interrupted by pressing the
Break key on the service port).
HELPER: No default value (helper files are not automatically loaded).
PS1: switch:
CONFIG_FILE: config.text
CONFIG_BUFSIZE: 32 KB
BAUD: 9600 bps
BOOTHLPR: No default value (no helper images are specified).
HELPER_CONFIG_FILE: No default value (no helper configuration file is specified).
Note Environment variables that have values are stored in the flash file system in various files. The format of
these files is that each line contains an environment variable name and an equal sign followed by the
value of the variable. A variable has no value if it is not listed in this file; it has a value if it is listed in
the file even if the value is a null string. A variable that is set to a null string (for example, “ ”) is a
variable with a value. Many environment variables are predefined and have default values.
Command Modes Boot loader
Command History
BOOTHLPR filesystem:/file-url—The name of the Cisco IOS helper image that is
first loaded into memory so that it can then load a second Cisco IOS image into
memory and launch it. This variable is used only for internal development and testing.
HELPER_CONFIG_FILE filesystem:/file-url—The name of the configuration file
to be used by the Cisco IOS helper image. If this is not set, the file specified by the
CONFIG_FILE environment variable is used by all versions of the software that are
loaded, including the helper image. This variable is used only for internal
development and testing.
PASSWD_RECOVERY—Enables or disables the password recovery option. Valid
values are yes, 1, no, or 2. The default is yes.
REBOOT_AFTER_CRASH—Sets the switch to reboot after an abnormal
termination. Valid values are yes, 1, no, or 2. The default is yes.
Release Modification
12.1(11)YJ This command was introduced.

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