Port Configuration

This dialog allows you to configure the ports. You can:

Tab. Port configuration table

Parameter

Meaning

Module.Port

Port identification using module and port numbers of the device, e.g. 2.1 for port one of module two.

Port priority

Enter the port priority.

Trust mode

Select the trust mode.

Untrusted traffic class

Display the traffic class used in the “untrusted” trust mode.

Shaping rate

Select the maximum bandwidth available in %.
Range permitted: 0% (off) to 95% in steps of 5%.


Entering the port priority

Tab. Assigning the port priority to the traffic classes

Port priority

Traffic class (default setting)

IEEE 802.1D traffic type

0

2

Best effort (default)

1

0

Background

2

1

Standard

3

3

Excellent effort (business critical)

4

4

Controlled load (streaming multimedia)

5

5

Video, < 100 ms of latency and jitter

6

6

Voice, < 10 ms of latency and jitter

7

7

Network control reserved traffic


Selecting the Trust Mode

The device provides 3 options for selecting how it handles received data packets that contain priority information. Click once on a cell in the “Trust mode” column to select one of the 3 options:

Displaying the untrusted traffic class

“Untrusted traffic class” shows you the traffic class that is used in the “untrusted” trust mode. When you change the port priority (refer Entering the port priority), the untrusted traffic class also changes 'Mapping the DSCP values onto the traffic classes'.

Shaping rate

The device allows you to limit the maximum bandwidth of a port (traffic shaping).

Click once on a cell in the “Shaping rate” column to select one of the possible values for the bandwidth limit in the range from 5% to 95%, in steps of 5%.

If the bandwidth set is temporarily exceeded, the device saves the data and sends it when the bandwidth load has decreased again. Traffic Shaping thus smooths out any overload situations.

If Traffic Shaping is active on an interface, the device ignores the bandwidths reserved for Weighted Fair Queuing.

Buttons

Tab. Buttons (Forts.)

Button

Meaning

“Set”

Transfers the changes to the volatile memory (RAM) of the device. To permanently save the changes afterwards, you open the Basic Settings:Load/Save dialog and click “Save”.

“Reload”

Updates the fields with the values that are saved in the volatile memory (RAM) of the device.

“Help”

Opens the online help.