![](/images/new-backgrounds/1269348/269348673x1.webp)
ES4710BD 10 Slots L2/L3/L4 Chassis Switch
Start
Read packet DSCP and
convert it to CoS according to
Read packet CoS and
Read the buffer value for
egress queue
Queue buffer
available
Discard packets until queue
buffer available
Place packet into specified
queue, and forward according to the weight priority of the queues
Finish
Fig
16.2QoS Configuration
16.2.1QoS Configuration Task Sequence
1. Enable QoS
QoS can be enabled or disabled in Global Mode. QoS must be enabled first in Global Mode to configure other QoS commands.
2. Configure class map.
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