Dell PowerEdge VRTX - Manual (Page 436)

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FILE LOCATION: C:\Users\gina\Desktop\Checkout_new\Dell Plasma\User
Guide\Plasma_UGQoS.fm
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– Always Rewrite DSCP — Check to always rewrite the DSCP values in
the incoming packets with the new values set in the DSCP to Queue
page. When this field is enabled, the switch uses the new DSCP
values to select the egress queue.
Assigning Global Settings Using CLI Commands
The following table summarizes the CLI commands for configuring fields in
the Global Settings page.
The following is an example of the CLI commands:
DSCP Rewrite
Use the DSCP Rewrite page to rewrite the DSCP tags for incoming traffic,
when different DSCP values are used in the incoming and outgoing domains.
Changing the DSCP value used in one domain to the DSCP value used in the
other domain preserves the priority of traffic used in the first domain.
As an example, assume that there are three levels of service: Silver, Gold, and
Platinum. The DSCP incoming values used to mark these levels are 10, 20,
and 30 respectively. If this traffic is forwarded to another service provider that
has the same three levels of service, but uses DSCP values 16, 24, and 48, the
values set in the DSCP Rewrite page are used to change the incoming values
to the outgoing values.
Table 19-9. Global Settings CLI Commands
CLI Command Description
qos trust {cos|dscp}
no qos trust
Configures the system to either the
CoS or DSCP trust state.
Use the no form of this command to
return to the default configuration.
qos dscp-mutation
no qos dscp-mutation
Applies the DSCP Mutation map to
system DSCP trusted ports.
Use the no form of this command to
restore the trusted port with no
DSCP mutation.
console(config)# qos trust dscp
console(config)# qos dscp-mutation