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This concern applies to EVPN MAC/IP route type 2 in a different scenario where operators need to advertise a reachable customer MAC address over a provider EVPN fabric. For the deployed inter-AS VPN option B route exchange approach, the relevant caution is instead that ASBR trust and route-target filtering are critical at inter-provider edges.

This concern applies to 802.1ad Q-in-Q tag separation in a different scenario where operators need to carry duplicate customer VLAN IDs from multiple subscribers over a provider Ethernet access network. For the deployed inter-AS VPN option B route exchange approach, the relevant caution is instead that ASBR trust and route-target filtering are critical at inter-provider edges.

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 inter-AS VPN option B route exchange approach, the relevant caution is instead that ASBR trust and route-target filtering are critical at inter-provider edges.

EVPN MAC/IP route type 2 instead addresses a different condition: advertise a reachable customer MAC address over a provider EVPN fabric. It would instead require you to enable MAC learning and Type-2 EVPN route advertisement for the correct service, not the stated goal to let a carrier customer transport its own labeled VPN services over another carrier backbone.

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 let a carrier customer transport its own labeled VPN services over another carrier backbone.

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 let a carrier customer transport its own labeled VPN services over another carrier backbone.

The proposed step is for EVPN MAC/IP route type 2, whose purpose is to advertise a reachable customer MAC address over a provider EVPN fabric. It would not perform the necessary carrier supporting carrier VPN operation: build a supported carrier-supporting-carrier architecture with appropriate labeled route exchange.

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 carrier supporting carrier VPN operation: build a supported carrier-supporting-carrier architecture with appropriate labeled route exchange.

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 carrier supporting carrier VPN operation: build a supported carrier-supporting-carrier architecture with appropriate labeled route exchange.

The observation would verify EVPN MAC/IP route type 2 under the separate requirement to advertise a reachable customer MAC address over a provider EVPN fabric. It does not demonstrate the needed carrier supporting carrier VPN result: the carrier CE can transport customer labeled traffic through the upstream core.

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 carrier supporting carrier VPN result: the carrier CE can transport customer labeled traffic through the upstream core.

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 carrier supporting carrier VPN result: the carrier CE can transport customer labeled traffic through the upstream core.

This defect belongs to EVPN MAC/IP route type 2, where the affected outcome is to advertise a reachable customer MAC address over a provider EVPN fabric. It is not the direct failure mode identified for the carrier supporting carrier VPN design in this case: an ordinary Internet transit service is assumed to preserve customer MPLS labels.

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 carrier supporting carrier VPN design in this case: an ordinary Internet transit service is assumed to preserve customer MPLS labels.

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 carrier supporting carrier VPN design in this case: an ordinary Internet transit service is assumed to preserve customer MPLS labels.

This concern applies to EVPN MAC/IP route type 2 in a different scenario where operators need to advertise a reachable customer MAC address over a provider EVPN fabric. For the deployed carrier supporting carrier VPN approach, the relevant caution is instead that carrier-of-carrier design introduces inter-provider trust and scale constraints.

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 carrier supporting carrier VPN approach, the relevant caution is instead that carrier-of-carrier design introduces inter-provider trust and scale constraints.

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 carrier supporting carrier VPN approach, the relevant caution is instead that carrier-of-carrier design introduces inter-provider trust and scale constraints.

carrier supporting carrier VPN instead addresses a different condition: let a carrier customer transport its own labeled VPN services over another carrier backbone. It would instead require you to build a supported carrier-supporting-carrier architecture with appropriate labeled route exchange, not the stated goal to carry customer multicast service across MPLS L3VPN provider edges.

shared extranet route import instead addresses a different condition: let only selected tenants reach a common internal service subnet. It would instead require you to create explicit selective route-target import or route-leak policies for the shared service, not the stated goal to carry customer multicast service across MPLS L3VPN provider edges.

MPLS L3VPN label stack instead addresses a different condition: carry a VPN packet through a core that does not hold customer routes. It would instead require you to push a VPN service label beneath an appropriate transport label at the ingress PE, not the stated goal to carry customer multicast service across MPLS L3VPN provider edges.

The proposed step is for carrier supporting carrier VPN, whose purpose is to let a carrier customer transport its own labeled VPN services over another carrier backbone. It would not perform the necessary multicast VPN PE distribution operation: deploy supported mVPN provider routing and group distribution mechanisms.

The proposed step is for shared extranet route import, whose purpose is to let only selected tenants reach a common internal service subnet. It would not perform the necessary multicast VPN PE distribution operation: deploy supported mVPN provider routing and group distribution mechanisms.

The proposed step is for MPLS L3VPN label stack, whose purpose is to carry a VPN packet through a core that does not hold customer routes. It would not perform the necessary multicast VPN PE distribution operation: deploy supported mVPN provider routing and group distribution mechanisms.

The observation would verify carrier supporting carrier VPN under the separate requirement to let a carrier customer transport its own labeled VPN services over another carrier backbone. It does not demonstrate the needed multicast VPN PE distribution result: join and source state builds the appropriate provider multicast forwarding trees.

The observation would verify shared extranet route import under the separate requirement to let only selected tenants reach a common internal service subnet. It does not demonstrate the needed multicast VPN PE distribution result: join and source state builds the appropriate provider multicast forwarding trees.

The observation would verify MPLS L3VPN label stack under the separate requirement to carry a VPN packet through a core that does not hold customer routes. It does not demonstrate the needed multicast VPN PE distribution result: join and source state builds the appropriate provider multicast forwarding trees.

This defect belongs to carrier supporting carrier VPN, where the affected outcome is to let a carrier customer transport its own labeled VPN services over another carrier backbone. It is not the direct failure mode identified for the multicast VPN PE distribution design in this case: customer PIM groups exist at the CE but no provider multicast VPN distribution is available.

This defect belongs to shared extranet route import, where the affected outcome is to let only selected tenants reach a common internal service subnet. It is not the direct failure mode identified for the multicast VPN PE distribution design in this case: customer PIM groups exist at the CE but no provider multicast VPN distribution is available.

This defect belongs to MPLS L3VPN label stack, where the affected outcome is to carry a VPN packet through a core that does not hold customer routes. It is not the direct failure mode identified for the multicast VPN PE distribution design in this case: customer PIM groups exist at the CE but no provider multicast VPN distribution is available.

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.