Cisco Catalyst 3550

2-461
Catalyst 3550 Multilayer Switch Command Reference
OL-8566-01
Chapter 2 Catalyst 3550 Switch Cisco IOS Commands
show port-security
show port-security
Use the show port-security privileged EXEC command to display port-security settings for an interface
or for the switch.
show port-security [address] [interface interface-id [address | vlan]] [ | {begin | exclude |
include} expression]
Syntax Description
Command Modes Privileged EXEC
Command History
Usage Guidelines If you enter the command without keywords, the output includes the administrative and operational
status of all secure ports on the switch.
If you enter an interface-id, the show port-security command displays port security settings for the
interface.
If you enter an interface-id and vlan, the show port-security command displays the maximum number
of secure addresses for the interface and the VLAN.
If you enter the address keyword, the show port-security address command displays the secure MAC
addresses for all interfaces and the aging information for each secure address.
If you enter an interface-id and the address keyword, the show port-security interface interface-id
address command displays all the MAC addresses for the interface with aging information for each
secure address. You can also use this command to display all the MAC addresses for an interface even
if you have not enabled port security on it.
Expressions are case sensitive. For example, if you enter | exclude output, the lines that contain output
do not appear, but the lines that contain Output appear.
address (Optional) Display all secure MAC addresses on all ports or a specified port.
interface interface-id (Optional) Display port security settings for the specified interface.
address (Optional) Display port security settings for the specified interface and
MAC address.
vlan (Optional) Display port security settings for all VLANs on the specified
interface. This keyword is only visible on interfaces that have the switchport
mode set to trunk.
| begin (Optional) Display begins with the line that matches the expression.
| exclude (Optional) Display excludes lines that match the expression.
| include (Optional) Display includes lines that match the specified expression.
expression Expression in the output to use as a reference point.
Release Modification
12.1(8)EA1 This command was introduced.
12.1(14)EA1 The vlan keyword was added.