Troubleshooting PON networks effectively with Carrier-grade Ethernet and WDM-PON
Venue
IEEE Communications Magazine, vol. 52 (2014), pp. 7-13
Publication Year
2014
Authors
Rafael Sanchez, Jose Alberto Hernandez, David Larrabeiti
BibTeX
Abstract
WDM-PONs have recently emerged to provide dedicated and separated point-to-point
wavelengths to individual Optical Network Units (ONTs). In addition, the recently
standardised Ethernet OAM capabilities under the IEEE 802.1ag standard and the
ITU-T Y.1731 recommendation, together with state-of-the-art Optical Time-Domain
Reflectometry (OTDR) provide new link-layer and physical tools for the effective
troubleshooting of WDM-PONs. This article proposes an Integrated Troubleshooting
Box (ITB) for the effectively 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 fibre, one of
its branches and even Ethernet links after the ONT.
