ZyXEL Communications RGS Series, User Manual

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5.4.17 Network – Port Security Switch
This page shows the Port Security status. Port Security is a module with no direct configuration.
Configuration comes indirectly from other modules - the user modules. When a user module has enabled port
security on a port, the port is set-up for software-based learning. In this mode, frames from unknown MAC
addresses are passed on to the port security module, which in turn asks all user modules whether to allow this
new MAC address to forward or block it. For a MAC address to be set in the forwarding state, all enabled user
modules must unanimously agree on allowing the MAC address to forward. If only one chooses to block it, it will
be blocked until that user module decides otherwise.
The status page is divided into two sections - one with a legend of user modules and one with the actual port
status.
Object Description
User Module Legend
User Module Name The full name of a module that may request Port Security services.
Abbr A one-letter abbreviation of the user module. This is used in the Users column in the
port status table.
Port Status
Port
The port number for which the status applies. Click the port number to see the status
for this particular port.
Users Each of the user modules has a column that shows whether that module has enabled
Port Security or not. A '-' means that the corresponding user module is not enabled,
whereas a letter indicates that the user module abbreviated by that letter (see
Abbr )
has enabled port security.
State Shows the current state of the port. It can take one of four values:
Disabled
: No user modules are currently using the Port Security service.
Ready
: The Port Security service is in use by at least one user module, and is
awaiting frames from unknown MAC addresses to arrive.
Limit Reached
: The Port Security service is enabled by at least the Limit Control
user module, and that module has indicated that the limit is reached and no more
MAC addresses should be taken in.
Shutdown
: The Port Security service is enabled by at least the Limit Control user