OmniSwitch os6900, Руководство по настройке сети

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Learned Port Security Overview Configuring Learned Port Security
page 31-8 OmniSwitch AOS Release 7 Network Configuration Guide June 2013
consists of packets that do not contain a matching source address, the packets are then subject to the LPS
source learning time limit window and the criteria for maximum number of addresses allowed.
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 three ways to configure a static source MAC address entry in the LPS table:
•
Use the source learning command, mac-learning static mac-address , to manually configure a static
MAC address for one or more LPS ports.
•
Use the LPS learning window no-aging and convert-to-static options (see “Configuring the LPS
Learning Window” on page 31-12 for more information).
•
Use the LPS port-security convert-to-static command to manually convert all dynamic addresses on a
specific port to static MAC addresses.
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
Chapter 3, “Managing Source Learning,” for more
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, discard, 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.