Cisco Systems EA6500 Manual De Usuario

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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 th
), 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 
 and the 
), 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.