The following considerations apply to network mode and access-uplink mode SAP configurations:
A SAP is a local entity and only locally unique to a specific device. The same SAP ID value can be used on another 7210 SAS-series router.
By default, no SAPs are configured on the node. All SAPs in subscriber services must be created.
At creation, the default administrative state for a SAP is set to administratively enabled.
When a SAP is deleted, all configuration parameters for the SAP are also deleted.
A SAP is owned by and associated with the service in which it is created in each router.
On a port with a dot1q encapsulation type, traffic for the SAP is identified based on a specific IEEE 802.1Q VLAN ID value. The VLAN ID is stripped off at SAP ingress and the appropriate VLAN ID added at SAP egress. As a result, VLAN IDs only have local significance, and configuring identical VLAN IDs for each SAP on a service is not required.
If a port is administratively shut down, all SAPs on that port are operationally out of service.
QinQ access SAPs of type Q1.0 are supported only for IES, VPRN, and R-VPLS services. They are not supported for Layer 2 services.
A SAP cannot be deleted until it has been administratively disabled (shutdown).
Each SAP can have one each of the following policies assigned:
Ingress filter policy
Egress filter policy
Ingress QoS policy
Accounting policy