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Quality of Service
Mapping CoS/802. 1 p Priorities to Queues
STEP 4
STEP 5
Mapping CoS/802.1p Priorities to Queues
STEP 1
STEP 2
STEP 3
STEP 4
STEP 5
Cisco Small Business SG200 Series 8-port Smart Switch
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WRR—Select to have the scheduler service the queue in turn with other
WRR queues, based on bandwidth percentage of the queue relative to other
WRR queues. (Strict queues continue to be serviced for as long as they have
higher priority traffic.)
If you selected WRR mode for a queue, enter a bandwidth percentage in the
Percentage of WRR Bandwidth field. The total of all bandwidth percentages for all
queues cannot exceed 100 percent.
Click Apply. Your changes are saved to the Running Configuration.
To apply these queue properties to all other interfaces on the switch, click Copy
Settings to All Interfaces.
The priority of a packet arriving on an interface might be identified by an IEEE
802. 1 p priority value in the Ethernet frame header. 802. 1 p specifies eight priority
levels (0–7). Use the CoS/802. 1 p to Queue page to map these priority levels to the
four CoS queues to steer packets to the appropriate outbound queue. Queue1
has the lowest priority and queue 4 has the highest priority.
To map 802. 1 p priority values to queues:
Click Quality of Service > CoS/802.1p to Queue in the navigation window.
Select from the Interface drop-down menus the Port or the LAG to configure.
For each 802. 1 p Class of Service, select a queue from the Output Queue list.
Queue 1 has the lowest priority, and queue 4 has the highest priority.
Click Apply. Your changes are saved to the Running Configuration.
To apply these mappings to all other interfaces on the switch, click Copy Settings
to All Interfaces.
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