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This concern applies to carrier supporting carrier VPN in a different scenario where operators need to let a carrier customer transport its own labeled VPN services over another carrier backbone. For the deployed multicast VPN PE distribution approach, the relevant caution is instead that mVPN scaling depends on provider tree and receiver-state design.

This concern applies to shared extranet route import in a different scenario where operators need to let only selected tenants reach a common internal service subnet. For the deployed multicast VPN PE distribution approach, the relevant caution is instead that mVPN scaling depends on provider tree and receiver-state design.

This concern applies to MPLS L3VPN label stack in a different scenario where operators need to carry a VPN packet through a core that does not hold customer routes. For the deployed multicast VPN PE distribution approach, the relevant caution is instead that mVPN scaling depends on provider tree and receiver-state design.

Y.1731 Ethernet delay measurement instead addresses a different condition: measure frame delay and loss across a provisioned Ethernet service. It would instead require you to enable suitable service OAM performance measurement on supported MEPs, not the stated goal to bind an existing customer Ethernet UNI into the correct E-Line pseudowire and transport endpoint.

IGMPv3 inclusion filtering instead addresses a different condition: request multicast only from one specified source at the IPv4 receiver edge. It would instead require you to send appropriate IGMPv3 INCLUDE-mode membership state, not the stated goal to bind an existing customer Ethernet UNI into the correct E-Line pseudowire and transport endpoint.

weighted random early detection instead addresses a different condition: avoid persistent tail-drop synchronization in a congested packet queue. It would instead require you to configure supported WRED thresholds and drop probability by traffic class, not the stated goal to bind an existing customer Ethernet UNI into the correct E-Line pseudowire and transport endpoint.

The proposed step is for Y.1731 Ethernet delay measurement, whose purpose is to measure frame delay and loss across a provisioned Ethernet service. It would not perform the necessary E-Line attachment circuit binding operation: associate the customer attachment circuit with the configured point-to-point xconnect and pseudowire.

The proposed step is for IGMPv3 inclusion filtering, whose purpose is to request multicast only from one specified source at the IPv4 receiver edge. It would not perform the necessary E-Line attachment circuit binding operation: associate the customer attachment circuit with the configured point-to-point xconnect and pseudowire.

The proposed step is for weighted random early detection, whose purpose is to avoid persistent tail-drop synchronization in a congested packet queue. It would not perform the necessary E-Line attachment circuit binding operation: associate the customer attachment circuit with the configured point-to-point xconnect and pseudowire.

The observation would verify Y.1731 Ethernet delay measurement under the separate requirement to measure frame delay and loss across a provisioned Ethernet service. It does not demonstrate the needed E-Line attachment circuit binding result: the access EFP frames are forwarded over the intended pseudowire to the other handoff.

The observation would verify IGMPv3 inclusion filtering under the separate requirement to request multicast only from one specified source at the IPv4 receiver edge. It does not demonstrate the needed E-Line attachment circuit binding result: the access EFP frames are forwarded over the intended pseudowire to the other handoff.

The observation would verify weighted random early detection under the separate requirement to avoid persistent tail-drop synchronization in a congested packet queue. It does not demonstrate the needed E-Line attachment circuit binding result: the access EFP frames are forwarded over the intended pseudowire to the other handoff.

This defect belongs to Y.1731 Ethernet delay measurement, where the affected outcome is to measure frame delay and loss across a provisioned Ethernet service. It is not the direct failure mode identified for the E-Line attachment circuit binding design in this case: the attachment circuit exists on the port but has no matching xconnect binding.

This defect belongs to IGMPv3 inclusion filtering, where the affected outcome is to request multicast only from one specified source at the IPv4 receiver edge. It is not the direct failure mode identified for the E-Line attachment circuit binding design in this case: the attachment circuit exists on the port but has no matching xconnect binding.

This defect belongs to weighted random early detection, where the affected outcome is to avoid persistent tail-drop synchronization in a congested packet queue. It is not the direct failure mode identified for the E-Line attachment circuit binding design in this case: the attachment circuit exists on the port but has no matching xconnect binding.

This concern applies to Y.1731 Ethernet delay measurement in a different scenario where operators need to measure frame delay and loss across a provisioned Ethernet service. For the deployed E-Line attachment circuit binding approach, the relevant caution is instead that the access-side tag rewrite and transport MTU must be compatible at each endpoint.

This concern applies to IGMPv3 inclusion filtering in a different scenario where operators need to request multicast only from one specified source at the IPv4 receiver edge. For the deployed E-Line attachment circuit binding approach, the relevant caution is instead that the access-side tag rewrite and transport MTU must be compatible at each endpoint.

This concern applies to weighted random early detection in a different scenario where operators need to avoid persistent tail-drop synchronization in a congested packet queue. For the deployed E-Line attachment circuit binding approach, the relevant caution is instead that the access-side tag rewrite and transport MTU must be compatible at each endpoint.

Y.1731 Ethernet delay measurement instead addresses a different condition: measure frame delay and loss across a provisioned Ethernet service. It would instead require you to enable suitable service OAM performance measurement on supported MEPs, not the stated goal to make three remote customer interfaces members of one shared Ethernet broadcast domain.

DSCP class marking at ingress instead addresses a different condition: mark customer traffic into a contracted provider forwarding class before queuing. It would instead require you to classify trusted traffic and apply the agreed DSCP or MPLS Traffic Class mapping, not the stated goal to make three remote customer interfaces members of one shared Ethernet broadcast domain.

inter-AS VPN option B route exchange instead addresses a different condition: exchange labeled VPN routes between autonomous systems through AS border routers. It would instead require you to establish ASBR VPNv4 route exchange and corresponding label handling, not the stated goal to make three remote customer interfaces members of one shared Ethernet broadcast domain.

The proposed step is for Y.1731 Ethernet delay measurement, whose purpose is to measure frame delay and loss across a provisioned Ethernet service. It would not perform the necessary E-LAN multipoint service operation: provide an E-LAN bridge domain with all three authorized endpoints.

The proposed step is for DSCP class marking at ingress, whose purpose is to mark customer traffic into a contracted provider forwarding class before queuing. It would not perform the necessary E-LAN multipoint service operation: provide an E-LAN bridge domain with all three authorized endpoints.

The proposed step is for inter-AS VPN option B route exchange, whose purpose is to exchange labeled VPN routes between autonomous systems through AS border routers. It would not perform the necessary E-LAN multipoint service operation: provide an E-LAN bridge domain with all three authorized endpoints.

The observation would verify Y.1731 Ethernet delay measurement under the separate requirement to measure frame delay and loss across a provisioned Ethernet service. It does not demonstrate the needed E-LAN multipoint service result: MAC learning and broadcast replication work across each intended member.

The observation would verify DSCP class marking at ingress under the separate requirement to mark customer traffic into a contracted provider forwarding class before queuing. It does not demonstrate the needed E-LAN multipoint service result: MAC learning and broadcast replication work across each intended member.

The observation would verify inter-AS VPN option B route exchange under the separate requirement to exchange labeled VPN routes between autonomous systems through AS border routers. It does not demonstrate the needed E-LAN multipoint service result: MAC learning and broadcast replication work across each intended member.

This defect belongs to Y.1731 Ethernet delay measurement, where the affected outcome is to measure frame delay and loss across a provisioned Ethernet service. It is not the direct failure mode identified for the E-LAN multipoint service design in this case: a point-to-point pseudowire connects only two locations and isolates the third.

This defect belongs to DSCP class marking at ingress, where the affected outcome is to mark customer traffic into a contracted provider forwarding class before queuing. It is not the direct failure mode identified for the E-LAN multipoint service design in this case: a point-to-point pseudowire connects only two locations and isolates the third.

This defect belongs to inter-AS VPN option B route exchange, where the affected outcome is to exchange labeled VPN routes between autonomous systems through AS border routers. It is not the direct failure mode identified for the E-LAN multipoint service design in this case: a point-to-point pseudowire connects only two locations and isolates the third.

This concern applies to Y.1731 Ethernet delay measurement in a different scenario where operators need to measure frame delay and loss across a provisioned Ethernet service. For the deployed E-LAN multipoint service approach, the relevant caution is instead that flooding scope and split-horizon controls affect scalability.

This concern applies to DSCP class marking at ingress in a different scenario where operators need to mark customer traffic into a contracted provider forwarding class before queuing. For the deployed E-LAN multipoint service approach, the relevant caution is instead that flooding scope and split-horizon controls affect scalability.

This concern applies to inter-AS VPN option B route exchange in a different scenario where operators need to exchange labeled VPN routes between autonomous systems through AS border routers. For the deployed E-LAN multipoint service approach, the relevant caution is instead that flooding scope and split-horizon controls affect scalability.