D-Link DIS-300G-12SW Industrial Gigabit Managed Switch with SFP slots

User Manual - Page 246

For DIS-300G-12SW.

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246
2.4.26 Network
2.4.27 Port Security
2.4.28 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
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