Transport

A presentation I created a while ago on basics of ASON GMPLS

OSNR ( Optical Signal to Noise Ratio)  is a critical and important parameter in high speed DWDM links. If OSNR is not good it will seriously affect the distance reachability in DWDM systems before regeneration is required. OSNR testing is typically done with OSA (Optical Spectrum Analyzer).  There are standard test sets available to test […]

As data rates increase beyond 10G, the requirements for OSNR become stringent. This is because the advanced modulation techniques used at higher bit rates require higher OSNR performance. Low OSNR is directly related to poor BER performance in DWDM networks. FEC or Forward error connection is a method used to achieve coding gain for higher […]

The debate still lingers on. When it comes to protection and re-routing  on High speed links, what is the benefit of using Optical ASON versus Electrical ASON. The Optical ASON relates to lambda switching ( Also called WSON-Wavelength Switched Optical Network). This necessitates the need of using at  minimum Multi degree and directionless functionality. Using colorless […]

ACG Research has done an interesting TCO of MPLS-TP versus IP/MPLS showing there is a huge reduction of  Total Cost of Ownership (TCO) in MPLS-TP versus IP/MPLS.  The analysis was done in two environments: Native Packet transport  on MPLS-TP versus IP/MPLS  and second one using TDM/Packet mix on MPLS-TP versus Circuit emulation on IP/MPLS.  The platform used for  MPLS-TP […]

Cloud is driving the Carrier Ethernet evolution. The MEF is serious about the evolution of Carrier Ethernet to meet the new demands of Cloud. The first and foremost would be to understand the elastic and dynamic demands of  Cloud which are pretty new to Carrier Ethernet scheme of things. MEF is trying to see how […]

Given  the attention MPLS-TP has received in the industry, it is worthwhile to discuss how this technology is different from MPLS. So here is a listing of the differences between the two. 1. MANAGEMENT PLANE SETUP : LSPs in MPLS-TP can be setup without the use of control plane purely through the management plane. Quite […]

The debate whether there is a market for 100G direct detection systems which are essentially Non Coherent is interesting. ADVA is on one side while the rest of industry on the other side. ADVA has been strongly advocating the need for 100G direct detection trasnponders that can cater to the need of what they call […]