Lab: Transport network troubleshooting

Transport Troubleshooting Methodology

Transport network troubleshooting follows a systematic approach: identify the symptoms, isolate the fault domain, determine the root cause, and apply the fix. Symptoms manifest differently across layers — a fiber cut causes BFD session down and OAM CCM loss, an MPLS misconfiguration causes traffic black-holing with no OAM alert, and a timing degradation causes gradual radio performance decline without any hard alarm. The first step is always to identify whether the issue is in the physical layer, data plane forwarding, control plane routing, or timing distribution. Transport management…