Understanding 100G OTN Error & Alarm Conditions – LOFLANE

On , in All Posts, Client Side, Errors & Alarms, OTN, by Tony Goodchild

At 100G speeds OTN uses a multilane implementation to achieve the OTU4 client interface. Using these multilane interfaces can present a number of challenges and new defect conditions have been defined to support these. LOFLANE is a loss of frame defect on a logical lane. In some ways it is similar to Loss Of Block Lock […]

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How does Skew impact latency measurement?

On , in All Posts, Client Side, Ethernet, General, by Tony Goodchild

Now more than ever latency is a key network quality metric, with financial institutions and other Enterprise customers demanding absolutely minimal latency from their service provider. With Skew being an inherent part of a 100G Ethernet link, field engineers starting to roll out these services commonly ask how will Skew levels affect the latency measurements […]

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Understanding 100G OTN

On , in All Posts, Client Side, General, OTN, by Tony Goodchild

OTN uses a similar multi-lane mechanism to 100G Ethernet to achieve 100G rates. The parallel interfaces are defined in an appendix of the G.709 recommendation.  The recommendation includes definitions of parallel interfaces for both 40G and 100G rates and within this a new signal was defined for parallel interfaces – the Optical Channel Transport Lane (OTL). […]

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