Monitoring link quality between network devices

A system comprising:

• a processor;
• and
• a memory storing instructions that, when executed by the processor, cause the system to:
• generate, at a first internetworking device, a marker-request packet that includes a current marker ID;
• send, from the first internetworking device, the marker-request packet to a second internetworking device;
• receive, at the first internetworking device, a marker-reply packet that responds to the marker-request packet from the second internetworking device, the marker-reply packet including the current marker ID and a previous marker ID;
• determine packet losses between the first internetworking device and the second internetworking device based on information associated with the current marker ID and the previous marker ID;
• determine at least one network factor that affects link quality between the first internetworking device and the second internetworking device;
• apply a weight to the packet losses based on the at least one network factor;
• and
• determine, at the first internetworking device, the link quality between the first internetworking device and the second internetworking device based on the weighted packet losses.

A method comprising:

• generating, by a first internetworking device, a first packet comprising statistics transmitted by either the first internetworking device or a second internetworking device to the other of the second internetworking device or the first internetworking device;
• generating, by the second internetworking device, a second packet comprising statistics transmitted by either the first internetworking device or the second internetworking device to the other of the second internetworking device or the first internetworking device;
• and
• determining, at the first internetworking device, a link quality between the first internetworking device and the second internetworking device,
• wherein determining the link quality comprises determining transmission counts and receiving counts associated with the first and second packets, determining a first packet loss and a second packet loss based on the transmission counts and the receiving counts, applying a weight to the first packet loss and the second packet loss based on at least one network factor that affects the link quality, and determining the link quality based on the weighted packet losses.