Cisco Systems 6500, EA6500 Mapping Received IP Precedence Values to Internal DSCP Values, Mapping Internal DSCP Values to Egress CoS Values

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Catalyst 6500 Series Switch Cisco IOS Software Configuration Guide—Release 12.1 E
78-14099-04
Chapter 31 Configuring PFC QoS
Configuring PFC QoS
Mapping Received IP Precedence Values to Internal DSCP Values
To configure the mapping of received IP precedence values to the DSCP value that PFC QoS uses
internally on the PFC (see the “Internal DSCP Values” section on page 31-17), perform this task:
This example shows how to configure the received IP precedence to internal DSCP map:
Router# configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)# mls qos map ip-prec-dscp 0 1 2 3 4 5 6 7
Router(config)# end
Router#
This example shows how to verify the configuration:
Router# show mls qos maps | begin IpPrecedence-dscp map
IpPrecedence-dscp map:
ipprec: 0 1 2 3 4 5 6 7
----------------------------------
dscp: 0 1 2 3 4 5 6 7
<...Output Truncated...>
Router#
Mapping Internal DSCP Values to Egress CoS Values
To configure the mapping of the DSCP value that PFC QoS uses internally on the PFC to the CoS value
used for egress LAN port scheduling and congestion avoidance (see the “Internal DSCP Values” section
on page 31-17 and the “LAN Egress Port Features” section on page 31-21), perform this task:
When configuring the internal DSCP to egress CoS map, note the following:
• You can enter up to 8 DSCP values that PFC QoS maps to a CoS value.
• You can enter multiple commands to map additional DSCP values to a CoS value.
• You can enter a separate command for each CoS value.
Command Purpose
Step 1 Router(config)# mls qos map ip-prec-dscp dscp1
dscp2 dscp3 dscp4 dscp5 dscp6 dscp7 dscp8
Configures the received IP precedence to internal DSCP
map. You must enter 8 internal DSCP values to which
PFC QoS maps received IP precedence values 0
through 7.
Router(config)# no mls qos map ip-prec-dscp Reverts to the default map.
Step 2 Router(config)# end Exits configuration mode.
Step 3 Router# show mls qos maps Verifies the configuration.
Command Purpose
Step 1 Router(config)# mls qos map dscp-cos dscp1 [dscp2
[dscp3 [dscp4 [dscp5 [dscp6 [dscp7 [dscp8]]]]]]]
to cos_value
Configures the internal DSCP to egress CoS map.
Router(config)# no mls qos map dscp-cos Reverts to the default map.
Step 2 Router(config)# end Exits configuration mode.
Step 3 Router# show mls qos maps Verifies the configuration.