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User Manual
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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
module, and that module has indicated that the limit is exceeded. No MAC
addresses can be learned on the port until it is administratively re-opened on the
Limit Control configuration Web-page.
MAC Count (Current, Limit)
The two columns indicate the number of currently learned MAC addresses (forwarding
as well as blocked) and the maximum number of MAC addresses that can be learned
on the port, respectively.
If no user modules are enabled on the port, the Current column will show a dash (-).
If the Limit Control user module is not enabled on the port, the Limit column will show
a dash (-).
Buttons
Auto-refresh: Check this box to refresh the page automatically. Automatic refresh
occurs every 3 seconds.
Refresh: Click to refresh the page immediately.
5.2.2 Port Monitoring
This page shows the MAC addresses secured by the Port Security module. 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.