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Configuring QoS Class of Service Configuration
User Guide 653
■ Configuring the DSCP to 802.1p Mapping and DSCP Remp
Follow these steps to configure the DSCP to 802.1p mapping and DSCP remap:
Step 1 configure
Enter global configuration mode
Step 2 For Certain Devices:
interface {fastEthernet
port
| range fastEthernet
port-list
| gigabitEthernet
port
| range
gigabitEthernet
port-list
| ten-gigabitEthernet
port
| range ten-gigabitEthernet
port-list
|
port-channel
port-channel-id
| range port-channel
port-channel-list
}
Enter interface configuration mode.
qos dscp-map {
dscp-value-list
} {
dot1p-priority
}
Specify the DSCP to 802.1p mapping for the desired port. The ingress packets with the
desired DSCP priority are first mapped to 802.1p priority based on the DSCP to 802.1p
mapping, then to TC queues based on the 802.1p to queue mapping. By default, the DSCP
priorities 0-7 are mapped to the 802.1p priority 0, the DSCP priorities 8-15 are mapped to the
802.1p priority 1 and so on.
dscp-value-list:
Specify the DSCP value list in the format of “1-3,5,7”. The valid values are from
0 to 63.
dot1p-priority:
Specify the 802.1p priority. The valid values are from 0 to 7.
For Certain Devices:
qos dscp-map {
dscp-value-list
} {
dot1p-priority
}
Specify the DSCP to 802.1p mapping. The ingress packets with the desired DSCP priority are
first mapped to 802.1p priority based on the DSCP to 802.1p mapping, then to TC queues
based on the 802.1p to queue mapping. The untagged packets with the desired DSCP priority
will be added an 802.1p priority value according to the DSCP to 802.1p mapping. by default,
the DSCP priorities 0-7 are mapped to the 802.1p priority 0, the DSCP priorities 8-15 are
mapped to the 802.1p priority 1 and so on.
dscp-value-list:
Specify the DSCP value list in the format of “1-3,5,7”. The valid values are from
0 to 63.
dot1p-priority:
Specify the 802.1p priority. The valid values are from 0 to 7.
Step 3 qos dscp-remap {
dscp-value-list
} {
dscp-remap-value
}
(Optional) Specify the DSCP to DSCP mappings. DSCP Remap is used to modify the DSCP
priority of the ingress packets. When the switch detects the packets with the desired DSCP
priority, it will modify the value of DSCP priority according to the map. By default, the original
DSCP priority 0 is mapped to the DSCP priority 0, the original DSCP priority 1 is mapped to the
DSCP priority 1 and so on.
dscp-value-list:
Specify the original DSCP priority list in the format of “1-3,5,7”. The valid values
are from 0 to 63.
dscp-remap-value:
Specify the new DSCP priority. The valid values are from 0 to 63.
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