Common to all 7210 SAS-series connectivity services are policies that are assigned to the service. Policies are defined at a global level, then applied to a service on the router. Policies are used to define 7210 SAS-series service enhancements. The types of policies that are common to all 7210 SAS-series connectivity services, and their functions, are the following:
SAP Quality of Service (QoS) policies allow for different classes of traffic within a service at SAP ingress and SAP egress.
QoS ingress and egress policies determine the QoS characteristics for a SAP. A QoS ingress policy applied to a SAP specifies the number of meters, meter characteristics (such as forwarding class, committed, and peak information rates, and so on) and the mapping of traffic to a forwarding class. A QoS egress policy defines the queue characteristics (such as CBS, CIR, PIR). A QoS policy must be created before it can be applied to a SAP. A single ingress and egress QoS policy can be associated with a SAP. A single access egress QoS policy can be associated with a port.
Filter policies allow selective blocking of traffic matching criteria from ingressing or egressing a SAP.
Filter policies, also referred to as access control lists (ACLs), control the traffic allowed in or out of a SAP, based on MAC or IP match criteria. Associating a filter policy with a SAP is optional. Filter policies are identified by a unique filter policy ID. A filter policy must be created before it can be applied to a SAP. A single ingress and single egress filter policy can be associated with a SAP.
Scheduler policies define the operating parameters (such as scheduling algorithm, weights per priority). Depending on the platform, these are either associated with SAPs or physical ports.
Accounting policies define how to count the traffic usage for a service, for billing purposes.
The routers provide a comprehensive set of service-related counters. Accounting data can be collected on a per-service, per-forwarding class basis, which enables network operators to accurately measure network usage and bill each customer for each individual service, using any of a number of different billing models.