Next Generation Fiber Structured Cabling and Migration to 40/100g

Editor's Notes

• #6: From Gartner 2010 actual port shipments FC = 6,444,900 and 10Gb = 4,418,200FC40 and 100 Gigabit Ethernet port volume is projected to be years away and be quite small. Aggregate 40 and 100 gigabit Ethernet ports in 2015 are less than 1% of the total. This forecast will probably change as standards and alternative technologies evolve, but no one knows how.We keep an eye this space, especially for fiber test products. (Good time to whip out a QuickMap). There are too many moving parts regarding copper to make anything but an incorrect prediction today.A Medium Dependent Interface (MDI) describes the interface (both physical and electrical) in a computer network from a physical layer implementation to the physical medium used to carry the transmission. Implications: It is unclear if 40/100 gigabit will ever be significantOnly FNET has the resources and market investment to “be there” if 40/100 gigabit does become significantThe role of twisted pair at these speeds is a complete guess today
• #7: 802.3ba is the study group developing the standard for 40 and 100 Gigabit Ethernet
• #8: 802.3ba is the IEEE standard for 40 and 100 Gigabit Ethernet. This time IEEE grouped together 40 and 100Gigabit. In order to meet the timeframes requested the in the market, when developing the Physical Layer Media Dependent transceivers, they chose to go with mostly known (10Gig) technology which is integrated into a parallel transceiver. The optical PMDs (Physical Medium Dependent [IEEE 802.3]). will be over multi-fiber ribbon fiber using MPO connectors.A short reach copper option is included over twinaxial cable assemblies which is similar to SFP+, except there are four lanes rather than 1.There is not any option for using structured copper cabling (no UTP so STP)
• #9: This chart summarizes the actual PMDs (Physical Layer Media Dependent transceivers) options included in the standard.The shorter reach options which are likely used in the data center, 7m cable assembly, and 100 or 150 m over multimode fiber utilize parallel 10Gig sigalling.
• #10: This chart represents a roadmapfor ‘current’ and ‘future’ short/longreach Ethernet transceivers.Highlighted are thosePMDs (Physical Media Dependent = Transceiver) for 40 & 100Gb/s Ethernet. Both are definedby IEEE 802.3ba as MPO/MTP form factor connectors.40G: 4 - 10Gb/s lanes of transmit and 4 – 10Gb/s lanes of receive in a 12-fibre MTP100G: 10 – 10Gb/s lanes of transmit and 10 – 10Gb/s lanes of receivetraffic in either a 24-fibre MTP or in 2 12-fibre MTP connectors.Also note thechange in reach of thefuture MM transceivertechnology (from a 300 meter solutionwith OM3 fibre to a 100 meter one & from a 550 meter solutionwith OM4 to a 150 meter solution).Note – 125m isshown in the chart sincethiswasbasedon 1.5dB of connectorinsertionloss and not 1.0dB as appears in thestandardtoday.
• #11: 802.3ba is the study group developing the standard for 40 and 100 Gigabit Ethernet
• #12: Duplex to paralell – is there such a thing as 40 & 100 GbE? Right now, isn’t it really aggrigation?
• #15: Currently no switch manufacturers are shipping this configuration
• #17: Now THIS is new!
• #21: Panduit’s SFQ cassette-based solution is ideal for reducing cable congestion in the Main Distribution Area. Discreet SFQ cassettes deployed for 10G applications are re-purposed elsewhere in the data center when upgrading to 40G. The MTP jumpers that connected to the read of those cassettes are joined together in a QPPABL adapter that occupies one of the panel slots in the QuickNet Patch Panel. The remaining open slots contain tethered SFQ cassettes. This is what enables a 1-to-1 migration from 10G (6 – 10G LC ports per slot) to 40G (6 – 40G MTP ports per slot). Additional slots are required when migrating from 40 to 100G. With the economic, enclosure-less, SFQ solution, Panduit delivers the highest density 40G & 100G solution on the market today.Panduit demonstrates both thought leadership and technical innovation through this system.
• #22: So what are the considerations when it come to fiber connectors? The MPO connector is the industry standard for high density fiber deployment. The MPO is used in 10G, 40G, and 100G systems. The most important things to consider when migrating from 10G to 40G or 100G on MPO are gender, polarity, and the key position.So why are these things so important?????
• #23: To understand the importance of gender, polarity, and the key position let’s first take a look at the MPO connector and how polarity is dictated by key position:Let’s familiarize ourselves with the features of existing MPO connectors.The MPO connector is a multi-piece fiber connector. It contains.A moveable outer housing that is used to push the connector into an adapter or transceiver. Pull on it to disengage the connector.A connector body housing which has the polarization key molded into itA high precision fiber ferrule which contains the multi-fiber (12 fiber) arrayThe ferrule also contains holes which contain alignment pins (for a male connector) and are left empty for a female connector.The orientation of polarization key may either be up or down with respect to fiber #1 when on a fiber assemblyThe key-up to key-down configuration is called Method (or type) AThe key-up to key-up configuration is known as Method (or type) BGender combinations also are a component of defining an MPO-MPO fiber assembly. They are:Male to Male Male to Female Female to FemaleA few of these are shown on this slide.
• #25: Reveiew Method A trunk & key positionsReview Method B trunk & key positionssReview Interconnect pinning and key positions (F/F)Review 10G trunk standard (pinned F/F)Review 40/100G standard (pinned M/M)Go through migration from 10G to 40G with an installed trunk.The potential to have a non-standard system or to be stuck using hybrid cables is very high
• #26: Panduit’s new PanMPO connector solves the issues of maintaining polarity and gender through complex fiber channels while maintaining the same high performance of an MTP connector.Explain how to change Polarity & Gender……Panduit still uses the same high precision ferrule and guide pins on this new MPO connector which allow it to deliver the same optical performance found in MTP connectors.