ECS4660-28F_Management Guide-R03

C HAPTER 13 | Security Measures
Configuring Port Security
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◆ To configure the maximum number of address entries which can be
learned on a port, specify the maximum number of dynamic addresses
allowed. The switch will learn up to the maximum number of allowed
address pairs <source MAC address, VLAN> for frames received on the
port. When the port has reached the maximum number of MAC
addresses, the port will stop learning new addresses. The MAC
addresses already in the address table will be retained and will not be
aged out.
Note that you can manually add additional secure addresses to a port
using the Static Address Table (page 265).
◆ When the port security state is changed from enabled to disabled, all
dynamically learned entries are cleared from the address table.
◆ If port security is enabled, and the maximum number of allowed
addresses are set to a non-zero value, any device not in the address
table that attempts to use the port will be prevented from accessing the
switch.
◆ If a port is disabled (shut down) due to a security violation, it must be
manually re-enabled from the Interface > Port > General page
(page 182).
◆ A secure port has the following restrictions:
■
It cannot be used as a member of a static or dynamic trunk.
■
It should not be connected to a network interconnection device.
PARAMETERS
These parameters are displayed:
◆ Port – Port identifier.
◆ Security Status – Enables or disables port security on an interface.
(Default: Disabled)
◆ Port Status – The operational status:
■
Secure/Down – Port security is disabled.
■
Secure/Up – Port security is enabled.
■
Shutdown – Port is shut down due to a response to a port security
violation.
◆ Action – Indicates the action to be taken when a port security violation
is detected:
■
None: No action should be taken. (This is the default.)
■
Trap: Send an SNMP trap message.
■
Shutdown: Disable the port.