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Configuring Learned Port Security
Static Configuration of Authorized MAC Addresses
It is also possible to statically configure authorized source MAC address entries into the LPS table. This
type of entry behaves the same way as dynamically configured entries providing authorized port access to
traffic that contains a matching source MAC address.
Static source MAC address entries, however, take precedence over dynamically learned entries. For
example, if there are 2 static MAC address entries configured for port 2/1 and the maximum number
allowed on port 2/1 is 10, then only 8 dynamically learned MAC addresses are allowed on this port.
There are two ways to define a static source MAC address entry in the LPS table; specify an individual
MAC address or a range of MAC addresses. See
page 25-12
for more information.
Note. Statically configured authorized MAC addresses are displayed permanently in the MAC address
table for the specified LPS port; they are not learned on any other port in the same VLAN.
Understanding the LPS Table
The LPS database table is separate from the source learning MAC address table. However, when a MAC
is authorized for learning on an LPS port, an entry is made in the MAC address table in the same manner
as if it was learned on a non-LPS port (see
information).
In addition to dynamic and configured source MAC address entries, the LPS table also provides the
following information for each eligible LPS port:
•
The LPS status for the port; enabled or disabled.
•
The maximum number of MAC addresses allowed on the port.
•
The maximum number of MAC addresses that can be filtered on the port.
•
The violation mode selected for the port; restrict or shutdown.
•
Statically configured MAC addresses and MAC address ranges.
•
All MAC addresses learned on the port.
•
The management status for the MAC address entry; configured or dynamic.
If the LPS port is shut down or the network device is disconnected from the port, the LPS table entries and
the source learning MAC address table entries for the port are automatically cleared.
To view the contents of the LPS table, use the
CLI Reference Guide for more information about this command.
OmniSwitch AOS Release 7 Network Configuration Guide
"Configuring an Authorized MAC Address Range" on
Chapter 3, "Managing Source Learning,"
show port-security
command. Refer to the OmniSwitch
March 2011
Learned Port Security Overview
for more
page 25-7
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