Chapter 21
| Class of Service Commands
Priority Commands (Layer 3 and 4)
– 527 –
Default Setting
Command Mode
Interface Configuration (Ethernet, Port Channel)
Command Usage
◆
The default mapping of CoS/CFI to Queue/CFI values shown in Table 109 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 109: Default Mapping of CoS/CFI Values to Queue/CFI
CFI
CoS
0 1
0 (2,0) (2,0)
1 (0,0) (0,0)
2 (1,0) (1,0)
3 (3,0) (3,0)
4 (4,0) (4,0)
5 (5,0) (5,0)
6 (6,0) (6,0)
7 (7,0) (7,0)
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