When SAP-based egress queues are in use, 7210 SAS-Mxp supports SAP-based marking for access SAPs and port-based egress marking on access ports. SAP-based marking is only supported for Layer 2 SAPs (configured in Epipe and VPLS services).
If the user enables remarking in the SAP egress policy attached to the SAP, the remark policy configured is used to mark the packets sent out of the SAP. If remarking is disabled in the SAP egress policy attached to the SAP, the remark policy configured under the access egress policy associated with the egress access port is used to mark all packets sent out of the Layer 2 SAP configured on the access port. This is known as port-based marking. Port-based marking is supported primarily for Layer 3 SAPs (configured in VPRN and IES services). SAP-based marking is not supported for Layer 3 SAPs.
On the 7210 SAS-Mxp, no explicit CLI command is provided to choose between port-based marking and SAP-based marking for Layer 2 SAPs. Choose SAP-based marking by enabling remarking in the SAP egress policy attached to the Layer 2 SAP or choose port-based marking by disabling remarking in the SAP egress policy attached to the SAP and enabling remarking in the access egress policy associated with the access port on which the Layer 2 SAP is configured.
See Access egress QoS policies for 7210 SAS-Mxp, 7210 SAS-R6, and 7210 SAS-R12 for more information about marking behavior with different remark policy types.
Access egress QoS policy ID 1 is reserved as the default access egress policy. The default policy cannot be deleted or changed. The default access egress policy is applied to all access ports which do not have another access egress policy explicitly assigned. By default sap-qos-marking is enabled.