RT Journal Article T1 Troubleshooting PON networks effectively with carrier-grade ethernet and WDM-PON A1 Sánchez Fuentes, Rafael A1 Hernández Gutiérrez, José Alberto A1 Larrabeiti López, David AB WDM-PONs have recently emerged to provide dedicated and separated point-to-point wavelengths to individual optical network units. In addition, the recently standardized Ethernet OAM capabilities under the IEEE 802.1ag standard and ITU-T Recommendation Y.1731, together with state-of-the-art optical timedomain reflectometry provide new link-layer and physical tools for the effective troubleshooting of WDM-PONs. This article proposes an integrated troubleshooting box (ITB) for the effective combination of both physical and link-layer information into an effective and efficient set of management procedures for WDM-PONs. We show its applicability in a number of realistic troubleshooting scenarios, including failure situations involving either the feeder fiber, one of its branches, or even Ethernet links after the ONU. PB IEEE SN 0163-6804 YR 2014 FD 2014-02-19 LK https://hdl.handle.net/10016/24627 UL https://hdl.handle.net/10016/24627 LA eng NO The authors would like to acknowledge the support of the CRAMnet project, funded by the Spanish government under grant no. TEC2012-38362-C03-01, to the development of this work. Also, the authors would like to thank Mr. Russ Jones from Ericsson-LG for his valuable support, especially concerning the laboratory trial setup of an earlier section. DS e-Archivo RD 30 abr. 2024