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[Description]
Changes the value of the IP header's TOS precedence field of the classified traffic class to the specified TOS value. In addition,
reassign the egress queue according to the egress queue ID table that corresponds to the trust mode.
If this is executed with the "no" syntax, pre-marking processing of the TOS precedence corresponding to the traffic class is
removed.
[Note]
In order to execute this command, QoS must be enabled.
Pre-marking cannot be used in conjunction with the set egress queue function.
[Example]
Make the following settings for received frames of LAN port #1
Permit traffic from the 10.1.0.0 network
Change the classified traffic class to TOS precedence "5".
[Traffic class definition]
SWR2310(config)#access-list 1 permit any 10.1.0.0 0.0.255.255 any
SWR2310(config)#class-map class1
SWR2310(config-cmap)#match access-list 1
SWR2310(config-cmap)#exit
[Policy settings]
SWR2310(config)#policy-map policy1
SWR2310(config-pmap)#class class1
SWR2310(config-pmap-c)#set ip-precedence 5
SWR2310(config-pmap-c)#exit
SWR2310(config-pmap)#exit
SWR2310(config)#interface port1.1
SWR2310(config-if)#service-policy input policy1
9.2.25 Set pre-marking (DSCP)
[Syntax]
set ip-dscp value
no set dscp
[Parameter]
value : <0 - 63>
DSCP value specified by pre-marking
[Input mode]
policy map class mode
[Description]
Changes the DSCP value of the classified traffic class to the specified DSCP value. In addition, reassign the egress queue
according to the egress queue ID table that corresponds to the trust mode.
If this is executed with the "no" syntax, pre-marking processing of the DSCP value corresponding to the traffic class is
removed.
[Note]
In order to execute this command, QoS must be enabled.
Pre-marking cannot be used in conjunction with the set egress queue function.
Up to four values may be used for pre-marking/remarking to a DSCP value not recommended in the RFC. The following table
shows the DSCP values that are recommended in the RFC.
PHB DSCP value RFC
default 0 2474
Class Selector 0, 8, 16, 24, 32, 40, 48, 56 2474
Assured Forwarding 10, 12, 14, 18, 20, 22, 26, 28, 30, 34, 36,
38
2597
Expedited Forwarding(EF) 46 2598
Command Reference | Traffic control | 293