Dynamic Mac Aging - Siemens SIMATIC NET SCALANCE SC-600 Configuration Manual

Configuring with Web Based Management
4.5 "Layer 2" menu
4.5.3

Dynamic MAC Aging

Protocol settings and switch functionality
The device automatically learns the source addresses of the connected nodes. This
information is used to forward frames to the nodes specifically involved. This reduces
the network load for the other nodes.
If a device does not receive a frame whose source address matches a learnt address
within a certain time, it deletes the learnt address. This mechanism is known as "Aging".
Aging prevents frames being forwarded incorrectly, for example when an end device (for
example a programming device) is connected to a different port.
If the check box is not enabled, a device does not delete learnt addresses automatically.
Description
The page contains the following boxes:
• Dynamic MAC-Aging
Enable or disable the function for automatic aging of learned MAC addresses.
• Aging Time[s]
Enter the time in seconds in steps of 15. After this time, a learned address is deleted
if the device does not receive any further frames from this sender address.
Range of values: 15 - 630 seconds
Note
Rounding of the values, deviation from desired value
When you input the Aging Time, note that it is rounded to correct values. If you enter
a value that cannot be divided by 15, the value is automatically rounded down.
Procedure
1. Select the "Dynamic MAC Aging" check box.
2. Enter the time in seconds in the "Aging Time[s]" text box.
3. Click the "Set Values" button.
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SCALANCE SC-600 Web Based Management (WBM)
Configuration Manual, 10/2021, C79000-G8976-C475-03