QoS Overview
Page 22 7210 SAS D, E, K OS Quality of Service Guide
Network QoS policies are applied to access uplink ports.On ingress, the policy applied to
incoming Dot1p values to forwarding class and profile state for the traffic received from the core
network. On egress, the policy maps forwarding class and profile state to priority bits (for
example: IEEE 802.1p bits) values for traffic to be transmitted into the core network. Network
queue policies are applied on egress to access uplink ports . The policies define the forwarding
class queue characteristics for these entities.
Service ingress, access egress, and network QoS policies are defined with a scope of either
template or exclusive. Template policies can be applied to multiple entities (such as SAPs and
ports) whereas exclusive policies can only be applied to a single entity.
One service ingress QoS policy can be applied to a specific SAP Access egress policy can be
applied to an access port. One access egress QoS policy can be applied to the access port. One
network QoS policy can be applied to a specific port. A network QoS policy defines both ingress
and egress behavior. One network queue policy can be applied to the access uplink port.
If no QoS policy is explicitly applied to a SAP or port, a default QoS policy is applied.
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