Cisco Catalyst 3550 User Manual

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Catalyst 3550 Multilayer Switch Command Reference
OL-8566-02
Chapter 2 Catalyst 3550 Switch Cisco IOS Commands
clear port-security
clear port-security
Use the clear port-security privileged EXEC command to delete from the MAC address table all secure
addresses or all secure addresses of a specific type (configured, dynamic, or sticky) on the switch or on
an interface.
clear port-security {all | configured | dynamic | sticky} [[address mac-addr | interface
interface-id] [vlan {vlan-id | {access | voice}}]]
Syntax Description
Defaults No default is defined.
Command Modes Privileged EXEC
Command History
Usage Guidelines If you enter the clear port-security all privileged EXEC command, the switch removes all secure MAC
addresses from the MAC address table.
If you enter the clear port-security configured address mac-addr vlan vlan-id command, the switch
removes the specified secure MAC address from the specified VLAN.
If you enter the clear port-security configured address mac-address command, the switch removes the
specified secure MAC address from the MAC address table.
all Delete all secure MAC addresses.
configured Delete configured secure MAC addresses.
dynamic Delete secure MAC addresses auto-learned by hardware.
sticky Delete secure MAC addresses, either auto-learned or configured.
address mac-addr (Optional) Delete the specified dynamic secure MAC address.
interface interface-id (Optional) Delete all the dynamic secure MAC addresses on the specified
physical port or VLAN.
vlan (Optional) Enter one of these options after you enter the vlan keyword:
• vlan-id—On a trunk port, specify the VLAN ID of the VLAN on which
this address should be cleared.
• access—On an access port, specify the VLAN as an access VLAN.
• voice—On an access port, specify the VLAN as a voice VLAN.
Note The voice keyword is available only if voice VLAN is configured on
a port and if that port is not the access VLAN.
Release Modification
12.1(11)EA1 This command was introduced.
12.1(14)EA1 The all, configured, and vlan keywords were added.
12.2(25)SEB The access and voice keywords were added.

Cisco Catalyst 3550 Specifications

General

Category	Switch
QoS	Yes
Form Factor	Rack-mountable
Manageable	Yes
RAM	64 MB
Model	Catalyst 3550
Uplink Ports	2 x GBIC (Gigabit Interface Converter) or SFP (Small Form-factor Pluggable)
Layer Support	Layer 3
VLAN Support	Yes
MAC Address Table Size	12000 entries
Routing Protocol	EIGRP
Features	QoS
Operating Temperature	32 to 113°F (0 to 45°C)
Operating Humidity	10 - 95% (non-condensing)
Ports	24 or 48 10/100 ports