QoS Overview
Page 50 7210 SAS D, E, K OS Quality of Service Guide
Optional service ingress QoS policy elements for 7210 SAS-K include:
• Additional unicast queues or multicast queues up to a total of 8.
• QoS policy match criteria to map packets to a forwarding class.
Each queue can have unique queue parameters to allow individual shaping of the flow mapped to
the forwarding class. The Figure 4 below depicts service traffic being classified into three different
forwarding classes.
Figure 4:
Traffic Queuing Model for Forwarding Classes
Service ingress QoS policy ID 1 is reserved for the default service ingress policy. The default
policy cannot be deleted or changed. The default service ingress policy is implicitly applied to all
SAPs which do not explicitly have another service ingress policy assigned. In the default policy,
all traffic is mapped to the default forwarding class which uses a queue by default. The
characteristics of the default policy are listed in Table 12.
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