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Description:
This document describes how to configure a QoS priority for specific DSCO/TOS values on a LANCOM GS-2326 switch. 
In this example, all ports are to prioritize packets with the DSCP flags CS5 and CS6. 
Note:
Info

QoS always affects at least two ports, the port where the frame is received (ingress port) and the port on which the frame is sent (egress port).


Accordingly, a QoS configuration is always carried out for two or more ports.



Requirements:


Procedure:
1) Using a web browser, open the configuration for the LANCOM switch.
2) In the configuration
menu
menu QoS
->
→ QoS Control
List
List you have the option of configuring multiple DSCP/TOS priorities for different ports.
To add a new entry, click on
the
the blue + symbol.
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3) This opens in a new window. Here, you select the ports that this entry applies to. In this
example
example all ports are selected.
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4) Next, go
to
to Key Parameters and set the desired Frame Type. In this example, the entry should prioritize IPv4 frames.
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5) This opens a sub-menu for the selected frame type. 
Here you
set
set DSCP to the value Specific and select the desired DSCP flag 40 (CS5).
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6) With the filters selected, you now specify an action
under
under Action Parameters. In this example, the packets are prioritized with the QoS Class 5.
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7)
The
The entry is included in the QoS list by clicking Apply.
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8) In order
to
to additionally prioritize the DSCP flag CS6 on all ports, add another entry to the list.
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9) To do this, repeat steps 3 through 7 and in step 5, select
the
the DSCP value 48 (CS6). The list now contains an entry for each DSCP value.
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10) In order for
the
the settings to be saved as boot persistent, go to the Maintenance -> Save/restore menu and save the configuration as the start configuration.
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