User’s Manual of GS-5220 LCD Series
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4.12.6 Port Security Status
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. The Port Security Status screen in Figure 4-12-6 appears.
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