Cisco Catalyst 2950 Command Reference

1-6
Catalyst 2950 and Catalyst 2955 Switch Command Reference
OL-10102-01
Chapter 1 Using the Command-Line Interface
Command Summary
Command Summary
Table 1-2 lists and describes commands that have the same function but different syntax in software
releases earlier than Cisco IOS Release 12.1(6)EA2 and in Cisco IOS Release 12.1(6)EA2 or later. It
lists the commands supported in releases earlier than Cisco IOS Release 12.1(6)EA2, the equivalent
commands in Cisco IOS Release 12.1(6)EA2 or later, and command descriptions.
If you are running Cisco IOS Release 12.1(6)EA2 or later, the switch supports the commands in the left
column of Table 1-2 only if they are in a saved configuration file. When you save the switch
configuration after modifying it, the commands in Table 1-2 are replaced by equivalent commands
supported in Cisco IOS Release 12.1(6)EA2 or later.
For information about commands listed in the left column of Table 1-2, see the Catalyst 2950 Desktop
Switch Command Reference, Cisco IOS Release 12.0(5.2)WC(1) (April 2001). You can access this
document at this URL:
http://www.cisco.com/univercd/cc/td/doc/product/lan/cat2950/2950_wc/index.htm.
Table 1-2 Command Comparison
Command in Cisco IOS
releases earlier than Cisco
IOS Release 12.1(6)EA2
Command in Cisco IOS
Release 12.1(6)EA2 or later Description
mac-address-table secure switchport port-security
mac-address
Adds secure addresses to the MAC
address table.
no negotiation auto speed nonegotiate Disables autonegotiation on
1000BASE-X, -LX, and -ZX GBIC
1
ports.
port group channel-group Assigns a port to a Fast EtherChannel or
Gigabit EtherChannel port group.
port monitor monitor session Enables SPAN
2
port monitoring on a
port.
port protected switchport protected Isolates Layer 2 unicast, multicast, and
broadcast traffic from other protected
ports on the same switch.
port security switchport port-security Enables port security on a port and
restricts the use of the port to a
user-defined group of stations.
port security action switchport port-security
violation
Specifies the action to take when an
address violation occurs on a secure
port.
port security
max-mac-count
switchport port-security
maximum
Specifies the maximum number of
secure addresses supported by a secure
port.
port storm-control storm-control Enables unicast, multicast, or broadcast
storm control on a port, and specifies
storm-control parameters on a port.
show mac-address-table
secure
show port-security Displays the port security settings for
an interface and the secure addresses in
the MAC address table.

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