You can configure ToS/DSCP from the network rules page or the Class of Service page. Define how the Layer 3 ToS/DSCP will be marked:
Go to Configure > Policy > Roles > Add.
Or, go to Class of Service > Add > Configure > ToS/DSCP and skip to step 5.
Select Bandwidth Limit and then select .
Select Edit , next to Advanced Settings.
Select Configure ToS/DSCP.
In the ToS/DSCP dialog box, select either Type of Service (ToS) or Diffserv Codepoint (DSCP).
Set the related options, and then select OK.
Type of Service (ToS)
Precedence
Assign a priority to the packet. Packets with lower priority numbers are more likely to be discarded by congested routers than packets with higher priority numbers.
Delay Sensitive
Specifies that the high priority packets will be routed with minimal delay. It can be useful to enable this option for voice protocols.
High Throughput
Specifies that high priority packets will be routed with high throughput.
High Reliability
Specifies that high priority packets will be routed with low drop probability.
Explicit Congestion Notification (ECN)
Permits end-to-end notification of network congestion while preventing dropped packets. ECN can be used only with two ECN-enabled endpoints.
Diffserv Codepoint (DSCP)
Well-Known Value
These values are explicitly defined in the DSCP related RFCs and implemented on many vendors' switches and routers.
Raw Binary Value
Specify a binary value if you want finer definition of priority.
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