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Cisco ME 3400 Ethernet Access Switch Software Configuration Guide
OL-9639-07
Chapter 33 Configuring QoS
Configuring QoS
Beginning in privileged EXEC mode, follow these steps to create a table map:
To delete a table map, use the no table-map table-map-name global configuration command.
This example shows how to create a DSCP-to-CoS table map. A complete table would typically include
additional map statements for the higher DSCP values. The default of 4 in this table means that
unmapped DSCP values will be assigned a CoS value of 4.
Switch(config)# table-map dscp-to-cos
Switch(config-tablemap)# map from 1 to 1
Switch(config-tablemap)# map from 2 to 1
Switch(config-tablemap)# map from 3 to 1
Switch(config-tablemap)# map from 4 to 2
Switch(config-tablemap)# map from 5 to 2
Switch(config-tablemap)# map from 6 to 3
Switch(config-tablemap)# default 4
Switch(config-tablemap)# end
Switch# show table-map dscp-to-cos
Command Purpose
Step 1
configure terminal Enter global configuration mode.
Step 2
table-map table-map-name Create a table map by entering a table-map name and entering table-map
configuration mode.
Step 3
map from from-value to to-value Enter the mapping values to be included in the table. For example, if the
table map is a DSCP-to-CoS table map, the from-value would be the
DSCP value and the to_value would be the CoS value. Both ranges are
from 0 to 63.
Enter this command multiple times to include all the values that you want
to map.
Step 4
default {default-value | copy | ignore} Set the default behavior for a value not found in the table map.
• Enter a default-value to specify a certain value. For example, in a
DSCP-to-CoS table map, this would be a specific CoS value to apply
to all unmapped DSCP values. The range is from 0 to 63.
• Enter copy to map unmapped values to an equivalent value. In a
DSCP-to-CoS table map, this command maps all unmapped DSCP
values to the equivalent CoS value.
• Enter ignore to leave unmapped values unchanged. In a
DSCP-to-CoS table map, the switch does not change the CoS value
of unmapped DSCP values.
Step 5
end Return to privileged EXEC mode.
Step 6
show table-map [table-map-name] Verify your entries.
Step 7
copy running-config startup-config (Optional) Save your entries in the configuration file.
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