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Chapter 4 Command-Line Reference 4-103
Example
4.3.10 Port Security Commands
These commands can be used to disable the learning function or manually specify
secure addresses for a port. You might want to leave port security off for an initial
training period (enable the learning function) to register all the current VLAN
members on the selected port, and then enable port security to ensure that the port
drops any incoming frames with a source MAC address that is unknown or has been
previously learned from another port.
4.3.10.1 port security
Use this command to configure a secure port. Use the no form to disable port
security.
Syntax
port security
no port security
Default Setting
All port security is disabled.
Console#show mac-address-table aging-time
Aging time: 300 sec.
Console#
TABLE 4-15 Port Security Commands
Command Function Mode Page
port security Configures a secure port IC 4-103
mac-address-table
static
Maps a static address to a port in a VLAN GC 4-99
show mac-address-
table
Displays entries in the bridge-forwarding database PE 4-100