Enterasys 5G1XX Guide de l'utilisateur Page 138

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C-2 Class of Service
Properly configured, the Class of Service mechanism assures that during congestion, the highest
priority data does not get delayed by normal priority traffic. The tagged header in the frame
governs individual frame priority.
Figure C-1 shows priority queuing operating within a switch. Frames entering the switch through
ports 1 and 4 are tagged as normal traffic and placed in a normal priority queue on the outbound
port. Frames entering through ports 2 and 5 are tagged as high priority traffic and placed in a high
priority queue on the outbound port. Priority queuing can be configured using the console interface
or via SNMP.
Figure C-1 Class of Service Example
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