Mappings - Dell PowerConnect B-RX Configuration Manual

18
Configuring the QoS mappings
BigIron RX(config)# qos-tos map dscp-dscp 0 to 10
This command changes the mapping of DSCP value 0 to 10.
Syntax: [no] qos-tos map dscp-dscp <old-dscp-value> [<old-dscp-value>...]
You can change up to seven DSCP values in the same commend.
Changing the DSCP –> internal forwarding priority

mappings

This mapping is used when the trust level is set to DSCP. In addition to determining the
internal-forwarding priority of a packet, the value also determines the outbound 802.1p value if
CoS marking is enabled. To change the DSCP –> internal forwarding priority mappings for all the
DSCP ranges, enter commands such as the following at the global CONFIG level of the CLI.
BigIron RX(config)# qos-tos map dscp-priority 0 2 3 4 to 1
BigIron RX(config)# qos-tos map dscp-priority 8 to 5
BigIron RX(config)# qos-tos map dscp-priority 16 to 4
BigIron RX(config)# qos-tos map dscp-priority 24 to 2
BigIron RX(config)# qos-tos map dscp-priority 32 to 0
BigIron RX(config)# qos-tos map dscp-priority 40 to 7
BigIron RX(config)# qos-tos map dscp-priority 48 to 3
BigIron RX(config)# qos-tos map dscp-priority 56 to 6
These commands configure the mappings displayed in the DSCP to forwarding priority portion of
the QoS information display. To read this part of the display, select the first part of the DSCP value
from the d1 column and select the second part of the DSCP value from the d2 row. For example, to
read the DSCP to forwarding priority mapping for DSCP value 24, select 2 from the d1 column and
select 4 from the d2 row. The mappings that are changed by the command above are shown below
in bold type.
BigIron RX(config-if-e10000-1/1)# show qos-tos
...portions of table omitted for simplicity...
DSCP-Priority map: (dscp = d1d2)
d1
-----+----------------------------------------
0
1
2
3
4
5
6
For information about the rest of this display, refer to
page 477.
Syntax: [no] qos-tos map dscp-priority <dscp-value> [<dscp-value>...] to <priority>
The <dscp-value> [<dscp-value>...] parameter specifies the DSCP value ranges you are remapping.
You can specify up to seven DSCP values in the same command, to map to the same forwarding
priority. The first command in the example above maps priority 1 to DSCP values 0, 2, 3, and 4.
476
to <new-dscp-value>
d2| 0 1 2 3
|
| 1 0 1 1
| 6 1 1 1
| 2 2 2 2
| 3 3 0 4
| 7 5 5 5
| 6 6 6 6
| 7 7 7 7
4 5 6 7 8 9
1 0 0 0 5 1
1 1 4 2 2 2
2 3 3 3 3 3
4 4 4 4 4 4
5 5 5 5 3 6
6 6 6 7 7 7
"Displaying QoS configuration information"
BigIron RX Series Configuration Guide
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