CLI Reference Guide-R07

Chapter 21 | Class of Service Commands
Priority Commands (Layer 3 and 4)
– 513 –
queue - Per-hop behavior, or the priority used for this router hop.
(Range: 0-7)
cos - CoS value in ingress packets. (Range: 0-7)
cfi - Canonical Format Indicator. Set this parameter to “0” to indicate that
the MAC address information carried in the frame is in canonical format.
(Range: 0-1)
Default Setting
Command Mode
Interface Configuration (Ethernet)
Command Usage
◆ The default mapping of CoS/CFI to Queue/CFI values shown in Table 107 is
based on the recommended settings in IEEE 802.1p for mapping CoS values to
output queues.
◆ Enter a value for the per-hop behavior, followed by the keyword “from” and
then up to eight CoS/CFI paired values separated by spaces.
◆ If a packet arrives with a 802.1Q header but it is not an IP packet, then the
CoS/CFI-to-Queue mapping table is used to generate priority for processing.
Note that priority tags in the original packet are not modified by this command.
Example
Console(config)#interface ethernet 1/2
Console(config-if)#qos map cos-dscp 0 0 from 0 1
Console(config-if)#
Table 107: Default Mapping of CoS/CFI Values to Queue/CFI
CFI
CoS
0 1
022
100
211
333
444
555
666
777