3com S7906E 설치 설명서

 

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Figure 12-1 QoS model for uplink traffic in an EPON system 

 

 

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Configuring the OLT to perform priority mapping for packets received from the uplink port 

according to the CoS-to-local precedence mapping table and then assign packets to output 

queues of the OLT port.  

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Configuring the OLT to perform congestion management for downlink traffic, supporting SP and 

WRR queue scheduling algorithms.  

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Configuring the OLT to perform line rate and traffic shaping for downlink traffic.  

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Configuring the maximum downlink bandwidth that the OLT assigns to the ONU.  

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Configuring high-priority packet buffer for downlink traffic that the OLT sends to the specified ONU.  

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Filtering the packets matching certain match criteria according to the configured QoS policy.  

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Configuring the ONU to distribute the received downlink traffic to different output queues based on 

the mapping between the CoS precedence and local precedence.  

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Configuring the ONU to perform traffic policing for downlink traffic of a UNI.  

 

Some ONUs support configuring queue scheduling for traffic from a UNI. To perform such 

configurations, you should log in to the ONU. For detailed configuration, refer to the ONU user manual. 

 

 

 shows the QoS model for downlink traffic in an EPON system.  

Figure 12-2 QoS model for downlink traffic in an EPON system