The SAP-based queuing mode is supported only on the 7210 SAS-R6 IMM-b and 7210 SAS-R12 IMM-b. It is not supported on the 7210 SAS-R6 IMM-c and 7210 SAS-R12 IMM-c.
The 7210 SAS-R6 and 7210 SAS-R12 support SAP-based marking for access SAPs and port-based egress marking on access ports. SAP-based marking is only supported for L2 SAPs, which are SAPs configured in Epipe and VPLS services. If users enable remarking in the SAP-egress policy attached to the SAP, the configured remark policy 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 L2 SAP configured on the access port. This is known as port-based marking.
Port-based marking is supported primarily for L3 SAPs (that is, SAPs configured in VPRN services and IES services). SAP-based marking is not supported for L3 SAPs.
No explicit CLI command is provided to choose between port-based marking and SAP-based marking for L2 SAPs. The user can choose SAP-based marking by enabling remarking in the SAP-egress policy attached to the L2 SAP, or 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 where the L2 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.