A method comprising: executing, on a layer three, L3, device, an operations, administration, and management, OAM, protocol, wherein the L3 device operates within an L3 network, and wherein the L3 device couples the L3 network with a first layer two, L2, network; determining, by the L3 device, that a network error exists with the L3 network; generating, with the OAM protocol executing on the L3 device, an L2 frame indicating the network error; and sending, by the L3 device, the L2 frame to an L2 device operating within the first L2 network, wherein the L2 frame is a continuity check message used by the OAM protocol executing on the L3 device to detect connectivity failures between a sending device and a destination device, and wherein the L2 frame includes a type-length-value, TLV, field that indicates the network error; receiving, responsive to the sending and by the L3 device, an L2 frame from the L2 device that indicates whether the L3 device is within a preferred network path to a second L2 device, wherein the second L2 device operates in a second L2 network, wherein the first and second L2 networks are coupled by the L3 network, and wherein the L2 frame received from the L2 device is a continuity check message used by the OAM protocol executing on the L2 device to detect connectivity failures between a sending device and a destination device; determining, by the L3 device and based on the received L2 frame, that the L3 device is not within the preferred network path; and responsive to determining that the L3 device is not within the preferred network path, reallocating previously reserved resources available to the L3 device. executing, on a layer three, L3, device, an operations, administration, and management, OAM, protocol, wherein the L3 device operates within an L3 network, and wherein the L3 device couples the L3 network with a first layer two, L2, network; determining, by the L3 device, that a network error exists with the L3 network; generating, with the OAM protocol executing on the L3 device, an L2 frame indicating the network error; and sending, by the L3 device, the L2 frame to an L2 device operating within the first L2 network, wherein the L2 frame is a continuity check message used by the OAM protocol executing on the L3 device to detect connectivity failures between a sending device and a destination device, and wherein the L2 frame includes a type-length-value, TLV, field that indicates the network error; receiving, responsive to the sending and by the L3 device, an L2 frame from the L2 device that indicates whether the L3 device is within a preferred network path to a second L2 device, wherein the second L2 device operates in a second L2 network, wherein the first and second L2 networks are coupled by the L3 network, and wherein the L2 frame received from the L2 device is a continuity check message used by the OAM protocol executing on the L2 device to detect connectivity failures between a sending device and a destination device; determining, by the L3 device and based on the received L2 frame, that the L3 device is not within the preferred network path; and responsive to determining that the L3 device is not within the preferred network path, reallocating previously reserved resources available to the L3 device.