QoS Overview
Page 48 7210 SAS D, E, K OS Quality of Service Guide
The required elements to define a service ingress QoS policy are:
• A unique service ingress QoS policy ID.
• A QoS policy scope of template or exclusive.
• The number of classification and meter resources to allocate for this policy.
• At least one default forwarding class meter. The parameters that can be configured for a
meter are discussed in Meter Parameters on page 38.
Optional service ingress QoS policy elements for 7210 SAS-E include:
• Additional unicast meters up to a total of 17.
• Additional multipoint meters up to 17.
• QoS policy match criteria to map packets to a forwarding class.
Optional service ingress QoS policy elements for 7210 SAS-D include:
• Additional unicast meters up to a total of 31.
• Additional multipoint meters up to 31.
• QoS policy match criteria to map packets to a forwarding class.
Each meter can have unique meter parameters to allow individual policing of the flow mapped to
the forwarding class. The figure below depicts service traffic being classified into three different
forwarding classes.
Figure 3: Traffic Policing and Queuing Model for Forwarding Classes
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