SNR S2989G-48TX-RPS — настройка функций безопасности и управления трафиком [387/553]
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SNR S2989G-48TX-RPS — настройка функций безопасности и управления трафиком [387/553]

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SNR S2989G-24TX-POE [387/553] Tos cos fields
S2989G-24TX Operation Manual
Chapter 6 Security Function Configuration
6-114
Ingress Egress
Generate
internal
priority
color
Sort packet traffic
according to the
classification info and
convert classification info
to internal priority value
and drop precedence
value
Decide whether traffic
color is single bucket
dual color or dual
bucket three color
according policing
policy
Degrade or discard
different color packets,
and remark DSCP,
TOS, COS fields
Place packets into priority
queues according to
internal priority,
provide
the service for them
according to queue weight
and drop precedence
Set the color of packet
traffic according to policing
policy of Egress
PolicyMap, degrade or
drop different color
packets
According to the characters (including field values like COS and DSCP) of upstream
packets, policing and rewriting of Egress make the last QoS change on the packet prior to
the packet egress.
Policing configures different policing policy based on the flow and distributes
bandwidth for the flow classified. The distribution policy of bandwidth can be either dual
bucket dual color or dual bucket three color. Different colors can be assigned to different
flows and approaches of discard or passage can be chosen for them; you can add
rewriting action for packets with passage approach chosen. See the following flow chart
for detailed description of Egress QoS:
Remark
scheduling
Policing
Classification
Policing and
remark of
Egress

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