Which of the following egress points does NOT support egress reclassification?

Egress reclassification is a feature of service-level Quality of Service (QoS) policies. These policies are applied at the egress points of a service, such as Service Access Points (SAPs) and Service Distribution Points (SDPs). Spoke-SDPs, whether bound to an IES or a VPRN, function as service egress points and support egress QoS policies that include reclassification rules.

Network interfaces, which operate in the global routing context (the "core"), do not support service-level egress reclassification. They use network QoS policies, which are designed to manage queuing and marking (e.g., Forwarding Class to MPLS EXP bits) for traffic transiting the service provider's core network, not for re-evaluating traffic based on service-specific criteria as it exits a service.

A. Spoke-SDPs bound to an IES are service egress points and fully support egress reclassification through an applied SDP egress QoS policy.

B. Spoke-SDPs bound to a VPRN interface are service egress points and fully support egress reclassification through an applied SDP egress QoS policy.

C. SAPs are the fundamental customer-facing service egress points and fully support egress reclassification via an applied SAP egress QoS policy.

1. Nokia 7750 SR OS Quality of Service Guide, Release 21.10.R1, Document Part Number: 3HE 17276 AAAD TQZZA, Chapter: QoS Policies. This chapter details the different types of QoS policies and their application points. It specifies that sap-egress and sdp-egress policies, which contain reclassification capabilities, are applied to SAPs and SDPs respectively.

2. Nokia 7750 SR OS Quality of Service Guide, Release 21.10.R1, Section: "Network QoS Policies". This section explicitly states that network QoS policies are applied to network interfaces (config>router>interface) and network ports. The description of their function focuses on defining egress queues for core-facing traffic and mapping forwarding classes to MPLS EXP values, distinct from the service-level reclassification function.

3. Nokia 7750 SR OS Services Architecture Guide, Release 21.10.R1, Document Part Number: 3HE 17274 AAAD TQZZA, Chapter: Service Distribution Points (SDPs). This chapter describes how SDPs act as logical endpoints for services like IES and VPRN. It confirms that sdp-egress QoS policies are applied to these bindings to control traffic leaving the service toward the core network.