Cisco Catalyst 2950 Command Reference

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Catalyst 2950 and Catalyst 2955 Switch Command Reference
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Chapter 2 Catalyst 2950 and 2955 Cisco IOS Commands
switchport port-security aging
switchport port-security aging
Use the switchport port-security aging interface configuration command to set the aging time and type
for secure address entries or to change the aging behavior for statically configured secure addresses on
a particular port. Use the no form of this command to disable port security aging or to return to the
default settings.
switchport port-security aging {static | time time | type {absolute | inactivity}}
no switchport port-security aging {static | time | type}
Syntax Description
Defaults The port security aging feature is disabled. The default time is 0 minutes.
The default aging type is absolute.
The default static aging behavior is disabled.
Command Modes Interface configuration
Command History
Usage Guidelines To enable secure address aging for a particular port, set the port aging time to a value other than 0.
To allow limited-time access to specific secure MAC addresses, set the aging type as absolute. When
the device sends traffic again, the deleted secure addresses are relearned.
Note The absolute aging time could vary by 1 minute, depending on the sequence of the system timer.
To allow continuous access to a limited number of secure addresses, set the aging type as inactivity.
This removes the secure address when it becomes inactive, and other addresses can become secure.
static Enable aging for statically configured secure addresses on this port.
time time Specify the aging time for this port. The range is 0 to 1440 minutes. If
the time is 0, aging is disabled for this port.
type {absolute | inactivity} Sets the type of aging. The keywords have these meanings:
absolute—Set the aging type as absolute aging. All the secure
addresses on this port age out after the time (minutes) specified and are
removed from the secure address list.
inactivity—Set the aging type as inactivity aging. The secure addresses
on this port age out only if there is no data traffic from the secure source
address for the specified time period.
Release Modification
12.1(9)EA1 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