Configuring Learned Port Security Learned Port Security Overview
OmniSwitch AOS Release 7 Network Configuration Guide June 2013 page 31-7
MAC Address Behavior on LPS Ports
The following table shows how LPS MAC addresses are treated when specfic switch or LPS actions are
taken:
Dynamic Configuration of Authorized MAC Addresses
When LPS is configured on a switch port, the learning of source MAC addresses is initiated. An entry
containing the address and the port that learns the MAC address is made in an LPS database table. This
entry is used as a criteria for authorizing future traffic from the source MAC address on that same port. In
other words, the learned MAC addresses are authorized to send traffic through the LPS port.
For example, if the source MAC address 00:da:95:00:59:0c is received on port 2/10 and meets the LPS
restrictions defined for that port, then this address and its port are recorded in the LPS table. All traffic that
is received on port 2/10 is compared to the 00:da:95:00:59:0c entry. If any traffic received on this port
Action Static Pseudo-Static Dynamic Bridged Dynamic Filtered
LPS port removed Flushed Flushed Flushed Flushed
Write memory Written Not written Not written Not written
Convert to static MAC No change Converted Converted No change
LPS admin disable No change No change Flushed Flushed
Enable after disable No change No change Flushed Flushed
LPS admin locked No change No change No change No change
Enable after locked No change No change No change No change
Aging bridged MAC None None Aged entry removed Flushed
Aging filtered MAC None None No change Aged entry removed
Remove static MAC Entry removed No change Can learn one Flushed
Remove pseudo-static MAC No change Entry removed Can learn one Flushed
Remove dynamic bridged No change No change Can learn one Flushed
Remove dynamic filtered No change No change No change Can learn one
Modify trap threshold No change No change No change No change
Modify violation No change No change No change No change
Increase bridged maximum No change No change Can learn more Flushed
Decrease bridged maximum No change No change Flushed Flushed
Increase filtered maximum No change No change No change Can learn more
Decrease filtered maximum No change No change No change Flushed
Change MAC range No change No change Flushed Flushed
Changes During the Learning Window Time Period
Disable boot up No change None None Can learn
Enable boot up No change None Can learn Can learn
Enable no aging No change Can learn Don’t learn Can learn
Disable no aging No change Don’t learn Can learn Can learn
Enable convert to static No change Convert at timeout Convert at timeout No change
Disable convert to static No change No change No change No change
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