Set up the upstream dscp mapping table – Allied Telesis x900-48 series User Manual

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Page 22 | AlliedWare™ OS How To Note: DHCP snooping on AT-9900-style switches

Configuration examples > Configuring the switch for DHCP snooping, filtering and Option 82, when it is

create qos policy=1

add qos policy=1 trafficclass=1

add qos policy=1 trafficclass=2

add qos policy=1 trafficclass=3

add qos policy=1 trafficclass=4

set qos port=1-24 policy=1

For FTP and Telnet traffic respectively:

set qos dscpmap=premarking dscp=10 bwclass=1 newqueue=7

set qos dscpmap=premarking dscp=11 bwclass=1 newqueue=6

set qos dscpmap=premarking dscp=12 bwclass=1 newqueue=3

This will be used to control the egress queues that all upstream traffic is sent to. Note that
the higher value egress queues have higher priority, so FTP traffic has priority over Telnet.

Apply the QoS policy to the downstream ingress ports (customer-facing
edge ports):

Set up the upstream DSCP mapping table: