Fiber Optic Infrastructure Application Guide-Books Pdf

Fiber Optic Infrastructure Application Guide
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About Cisco, Cisco is a worldwide leader in networking that transforms the way that people connect communicate and. collaborate, Information about Cisco can be found at http www cisco com. About Corning Cable Systems, Corning Cable Systems part of the Corning Incorporated telecommunications segment is a leading manufacturer. of fiber optic communications system solutions for voice data and video network applications worldwide For. more information visit the website at http www corning com cablesystems. Introduction, As data centers consolidate into more complex systems they take advantage of new speed increases and. technologies The speed changes from 1 to 10 Gbps infrastructure were easy to understand With speeds in the. data center now increasing from 10 Gbps to 40 Gbps and eventually to 100 Gbps different optical technologies. and cabling infrastructures are required This document introduces the cable requirements for 40 Gbps. infrastructure and fundamental cabling principles supporting Cisco Nexus 6000 Series Switches Although. alternative cabling options are mentioned Twinax and active optical assemblies the main focus of the document. is cabling for pluggable optical Enhanced Quad Small Form Factor Pluggable QSFP modules. The new Cisco Nexus 6000 Series provides high 10 and 40 Gigabit Ethernet density in energy efficient switches. with a compact form factor With a robust integrated Layer 2 and 3 feature set the Cisco Nexus 6000 Series. provides a versatile platform that can be deployed in multiple scenarios direct attach 10 and 40 Gbps access. and high density fabric extender aggregation deployments leaf and spine architecture and compact aggregation. solutions to build scalable Cisco Unified Fabric in the data center Cisco Nexus 6000 Series based architecture. can adapt to increasing bandwidth demands with low power and a compact space profile providing savings in. capital expenditures CapEx and operating expenses OpEx. Structured Some Permanent Links or Unstructured System. When designing a networking system it is important to plan the cabling system in advance The goal is to address. current network requirements as well as accommodate future growth. A structured cabling system provides a flexible cabling plan to address the commonly performed tasks of moving. adding or changing the infrastructure as the network grows. A good analogy in support of a structured cabling system is the electrical wiring in your home When connecting. appliances and devices you require only a 5 foot connection to the closest electrical outlet However without an. electrical outlet all appliances would have to connect directly to the breaker or panel requiring a cable of 200 feet. or more This approach would be inefficient and would become unmanageable as you add multiple appliances or. devices throughout the home The same concept applies to data centers in which structured cabling becomes a. necessity as the infrastructure grows and as constant moves and changes reinforce the need for a reliable. network that is also easy to troubleshoot, 2013 Cisco and or its affiliates All rights reserved This document is Cisco Public Information Page 2 of 23.
Structured cabling requires additional initial investment to create the cabling infrastructure but the recurring. benefits more than outweigh the slight additional incremental cost Imagine the cost of deploying a two fiber. optical jumper each time a new server is placed in the data center Further regardless of whether the data center. has a raised floor or uses overhead cabling both result in time consuming and inefficient deployment in an. unstructured environment Likewise management of such an environment is cumbersome increasing the risk of. outages caused by human errors, Structured cabling uses fiber termination connector panels that are connected through permanent links of optical. cabling typically configured in a star topology All cabling in the data center server areas is consolidated in a. central location near the core switch in the network the core switch is analogous to the breaker or power panel in. the home electrical system analogy The permanent preterminated trunk cables branch to the zones in the data. center which contain servers storage or network devices Note that with structured cabling you still need some. device to device connections at the access layer As you can see in Figure 1 when making these short. connections within the same cabinet or even a few cabinets away the use of patch panels may not be required. Likewise patch panels would not be required for Inter Switch Link ISL connections. Figure 1 Structured Cabling, 2013 Cisco and or its affiliates All rights reserved This document is Cisco Public Information Page 3 of 23. Unstructured cabling occurs when optical links are deployed in a point to point or device to device design In this. situation cabling pathways become congested with an entangled mess of two fiber optical patch cords Figure 2. Figure 2 Unstructured Cabling,Types of Fiber Optic Fiber. As a result of the emergence of high data rate systems such as 10 40 and 100 Gigabit Ethernet laser optimized. multimode fiber has become the dominant fiber choice These 50 micron fibers are optimized for the 850. nanometer nm transmission of vertical cavity surface emitting laser VCSEL based transceivers The TIA. 492AAAC OM3 detailed fiber standard was released in March 2002 and the TIA 492AAAD OM4 detailed fiber. standard was released in August 2009 Corning suggests installing either OM3 or OM4 cabling in the data center. space based on length requirements The two fibers have different bandwidths information carrying capacity. which results in different achievable lengths for the same transceivers Table 1 shows the achievable distances. based on the OM3 and OM4 fibers at various data rates TIA 942 A Telecommunication Infrastructure Standards. for Data Centers only recognizes OM3 and OM4 multimode fiber type it removed OM1 which was 62 5 and OM2. which was standard 50 micron In addition the standard provided further guidance to recommended OM4 cabling. as a suggestion utilizing LC and MTP connectivity,Table 1 850 nm Ethernet Distance m. 1 Gbps 10 Gbps 40 Gbps 40 Gbps 100 Gbps, 1000BASE SX 10GBASE SR 40GBASE SR4 40GBASE CSR4 100GBASE SR10.
OM3 50 m 1000 300 100 300 100,OM4 50 m 1000 400 150 400 150. 2013 Cisco and or its affiliates All rights reserved This document is Cisco Public Information Page 4 of 23. Types of Optical Transceiver Modules, The transceiver is an electronic device that receives an electrical signal converts it into a light signal and. launches the signal into a fiber It also receives the light signal and converts it into an electrical signal For data. rates 1 Gbps a multimode transceiver uses an 850 nm VCSEL transceiver The 850 nm VCSEL transceiver. provides the optimum technical and economic solution for high bit rate 1 Gbps operation that makes 50. micron multimode fiber the most deployed optical fibers in the data center today. SFP is the dominant transceiver form factor used for 1 and 10 Gigabit Ethernet applications The transceiver. uses an LC optical connector interface For more information see. http www cisco com en US prod collateral modules ps5455 data sheet c78 455693 html. The QSFP transceiver is the dominant transceiver form factor used for 40 Gigabit Ethernet applications The. optical connector interface is a 12 fiber MTP Connector For more information see. http www cisco com en US prod collateral modules ps5455 data sheet c78 660083 html. Table 2 shows connectivity options and their advantages and disadvantages. Table 2 Connectivity Options,Example Advantages Disadvantages. Pluggable optical QSFP 40G SR4 Allows extended reach capabilities More expensive than other short reach. modules QSFP 40G CSR4 400m on multimode fiber MMF and 10 direct attach options. km on single mode fiber SMF Cable, QSFP 40GE LR4 links and optical engines are separate. and thus can be upgraded independently, Passive direct attach QSFP H40G CU1M Allows lower cost short reach capability Limited to less than 5m and coaxial.
copper QSFP 4SFP10G CU1M cable can be stiff and bulky in high. density deployments, Active direct attach QSFP H10G ACU7M Allows lower cost short reach capability Limited to less than 10m and coaxial. copper cable can be stiff and bulky in high,density deployments. Active optical cable QSFP AOC 1 2 3 5 7 10m Allows lower cost short reach capability Limited to less than 10m. assemblies with more flexible cabling,Typical Optical Cabling Components. Table 3 shows typical cabling components,Table 3 Typical Cabling Components. Component Product Photo Description, MTP Trunk Cable These fiber trunk cables are typically 12 144 fibers and create.
the permanent fiber links between patch panels in a structured. environment They are pre terminated from the manufacturer. with MTP Connectors at a specified length and have a pulling. grip for easy installation, 2013 Cisco and or its affiliates All rights reserved This document is Cisco Public Information Page 5 of 23. Component Product Photo Description, Connector Housings The connector housings are physically mounted in a 19 rack or. cabinet They are typically offered in various sizes such as 1U. 2U or 4U which refers to the amount of rack space required for. MTP LC Module The MTP LC module is installed into the connector housings. They breakout the MTP connections from the trunk cables into. LC connections for 1 and 10G applications Thus the trunk. cables would plug into the rear MTP of the module while the LC. jumpers would plug into the front of the module, MTP Connector Panel The MTP MTP Connector panel sometimes called bulkhead is. installed into the housings They offer a connection point. between the MTP trunk and MTP jumper for 40 and 100G. applications Thus the trunk cables would plug into the rear of. the panel while the MTP jumpers would plug into the front of the. MTP LC Harness The MTP LC harness assembly is used for breaking out the. breakout cable MTP into several LC connections One application is to connect. the MTP trunk cables into multiple 1 10G switch ports Another. application could be connecting two network devices directly. For example connecting a TOR switch with 4 10G uplinks into. a single 40G port on the aggregation switch, LC or MTP Jumpers The LC or MTP jumpers serve to create the connection between. the device port sand the structured cabling via the connector. For more detailed information about these products please visit http cablesystems corning com 1 NX6Cabling. Cisco Nexus 6000 Series Connection, This section presents a sample customer data center deployment and shows how the products and the structured.
cabling are deployed This example examines some typical optical connectivity links in a large scale fabric and. looks specifically at the data center environment but the same connectivity can apply to a consolidated campus. and data center core or commercial fabric, 2013 Cisco and or its affiliates All rights reserved This document is Cisco Public Information Page 6 of 23. In general a data center has two points of presence POP rooms this is where the campus or carrier. demarcation occurs Optical cabling connects each entrance room to each main distribution area MDA The MDA. is cabled to the horizontal distribution area HDA in each data hall or point of distribution POD The HDA also. known as the aggregation point then fans out to each equipment distribution area EDA for direct server or. storage connectivity The HDA typically is the end of row EoR or middle of row MoR network equipment rack. The EDA typically is the ToR patch panel or a ToR networking device such as a Cisco Nexus 5500 switching. platform or Cisco Nexus 2000 Series Fabric Extender. These are the various physical areas of the data center space next consider the placement of network equipment. Figure 3 shows a typical placement of the network equipment in the physical areas In addition it shows the. typical cabling connectivity between the networking devices. Figure 3 Physical Data Center Floor Layout, 2013 Cisco and or its affiliates All rights reserved This document is Cisco Public Information Page 7 of 23. MDA to HDA Connectivity, When cabling between the MDA and the HDA Figure 4 some cabling considerations depend on the layout of the. data center This structured cabling trunk typically is a high fiber count 48 fibers MTP trunk cable If the cable. runs in high traffic areas with pathways shared with other mechanical support systems an interlocking armored. cable often is selected The additional crush protection reduces the risk from accidental damage In addition. depending on the size of the data center the distance may require single mode cabling for the additional distance. support The pathway from the MDA to the HDA typically is the longest internal data center link in the system. Figure 4 Logical Connectivity of Cisco Nexus 6000 Series Switches. Another consideration is the flexibility associated with a cross connect also referred to as a patch panel field This. port level patching location outlined with a dotted line in Figure 5 allows connectivity between any port and any. other port in an organized way The flexibility created by this central patching field guarantees the ability to achieve. any desired link configuration The cross connection allows. Meshing of switch ports, Segregation of business units which may have different maintenance schedules. Clean mixing of 10 to 10 Gbps and 10 to 40 Gbps links. 2013 Cisco and or its affiliates All rights reserved This document is Cisco Public Information Page 8 of 23. Figure 5 10 Gbps Connectivity with SFP Port Replication Cross Connect. Figure 6 Physical Rack Layout of 10 Gbps Connectivity with SFP Port Replication. The MDA or network core is connected to the HDA or network aggregation layer A typical network core may be. composed of Cisco Nexus 7000 Series devices and the aggregation layer may consist of a Cisco Nexus 6004. Switch When the Cisco Nexus 6004 is used as an aggregation device with connectivity to a core such a Cisco. Nexus 7000 Series Switch through a structured cabling infrastructure the device may be part of either a 10 or 40. Gbps fabric, In a 10 Gbps fabric deployment with the Cisco Nexus 7000 Series simplification of cabling to the Cisco Nexus.
6004 is possible using MTP terminated trunk cables Permanent structured cabling links would be deployed. using these MTP based trunks to create connector patching fields at each end Then short MTP or LC jumper. patch cables would be used to make the connection from the patch field to the QSFP or SFP optics at the. switch port The MTP patch panel field allows the end device to be connected to any port across multiple Cisco. Nexus 6004 devices because the devices terminate at the patch panel field. 2013 Cisco and or its affiliates All rights reserved This document is Cisco Public Information Page 9 of 23. In the future when the core is upgraded to support QSFP optics and 40 Gbps flows the existing structured. cabling infrastructure can be maintained and only the harness assembly J that terminated in the LC based Cisco. Nexus 7000 Series I O module need to be replaced The rest of the infrastructure from the Cisco Nexus 6000. Series Switch through the patch panel field would remain the same for 40 Gbps flows. Some links may not require the flexibility of having a cross connect and in this case a direct interconnect would. be deployed In this situation the structured cabling MTP trunk would still be terminated in rack mounted. patching panels at the network devices then there is an interconnect using a jumper from the patch field directly to. the device Figure 7 shows a 10 Gbps interconnect link between a Cisco Nexus 7000 Series Switch and a Cisco. Nexus 6000 Series Switch,Figure 7 10 Gbps Connectivity with Interconnect. Figure 8 shows an alternative connectivity scheme for a 10 Gbps flow between the Cisco Nexus 7000 Series and. the Cisco Nexus 6004 This scheme uses an MTP module with LC jumpers instead of the eight fiber harness. assembly shown in Figure 7 This approach provides more flexibility when patching at the SFP connections. especially when patching between port groups or across blades. Figure 8 10 Gbps Connectivity with Interconnect Using Modules and LC Jumpers. 2013 Cisco and or its affiliates All rights reserved This document is Cisco Public Information Page 10 of 23. Table 4 shows a sample bill of materials for the MDA to HDA connectivity shown in Figures 5 through 8. Table 4 Sample Bill of Materials,Corning Part Numbers. Identifier Part Number Description, A H757912TPH 3W010F MTP pinless to LC Uniboot harness breakout cable for Nexus 7000 10F length. B ECM UM12 05 93T 12 fiber LC Duplex to MTP pinned. C 797902TD120002M LC Uniboot Jumper 2m, D G7575E4TPNDDU100F 144 fiber MTP Trunk Cable 100ft. E EDGE CP48 E3 48 fiber 4 port MTP Adapter Panel, F J937512TE8 NB010F MTP pinned to MTP pinless OM3 jumper Type B polarity 10ft.
J H937908QPH KZU010F 8 fiber harness MTP pinned 4 LC Uniboot OM3 4 50 125 24 LC breakout and. overall length of 10ft, K EDGE 04U EDGE 4U 19 Rack mount housing holds 48 EDGE modules or panels. HDA to EDA Connectivity, Most network endpoints will be either 1 or 10 Gbps devices so minor cabling changes are needed to support 10. Gbps devices such as the Cisco Nexus 5548 Figure 9 shows a Cisco Nexus 6004 that is connected to the base. ports of a Cisco Nexus 5500 platform switch These endpoint connections will be MTP and LC respectively and. the structured cabling infrastructure maintains MTP trunks and panels This approach will require a MTP to LC. harness assembly to make the connection from the termination patch field to the Cisco Nexus 5500 platform. A MPO jumper can be used to make the connection from the termination patch field to the Cisco Nexus 6004. Figure 9 10 Gbps Connectivity with Interconnect MTP to LC. 2013 Cisco and or its affiliates All rights reserved This document is Cisco Public Information Page 11 of 23. If the Cisco Nexus 5500 platform switch has an MTP based module N55 M4Q installed then the MTP to MTP. patch cable can be used Deployments of this type could be used in places in which the Cisco Nexus 5500. platform is a ToR switch or a fabric extender aggregator In both cases the Cisco Nexus 6004 is used as an. aggregation point for the network edge as shown in Figure 10. Figure 10 10 Gbps Connectivity use QSFP and MTP Interconnect. The Cisco Nexus 6004 has enormous deployment flexibility and can also be used as a fabric extender aggregator. in EoR or MoR deployments or as an uplink aggregation device In these deployments the ports on the Cisco. Nexus 6004 simplify cabling through the use of MTP optic cabling end to end and the switch supports 40 Gbps. flows for the future Figure 11, Figure 11 10G Connectivity with QSFP and MTP interconnects. 2013 Cisco and or its affiliates All rights reserved This document is Cisco Public Information Page 12 of 23. When structured cabling is used the end device patch cords F or J are chosen to match the device either MTP. or LC The other end of the cable will be an MTP cable that connects to an MTP adapter panel that is installed in. an adapter panel carrier Connectivity between the two adapter panels is achieved with high fiber count MTP trunk. cables D These trunks allow fast connection of large fiber counts quickly and effortlessly Figure 12. Figure 12 10G Connectivity mixed MTP and LC interconnects. In all these connections the Cisco Nexus 6004 is used to connect to a 10 Gbps switch such as the Cisco Nexus. 5500 platform or a fabric extender and the ports on the Cisco Nexus 6004 will be configured in 10 Gigabit. Ethernet mode to match those of the Cisco Nexus 5500 platform. The Cisco Nexus 6004 is a high density 10 and 40 Gbps switch It can be an EoR or MoR device too In that. case the Cisco Nexus 6004 can be used in both the aggregation and access layers This configuration takes. advantage of the MTP cabling and also allows full support of 40 Gbps flows between the devices Figure 13 shows. the cabling between two Cisco Nexus 6004 Switches,Figure 13 40G Connectivity with Interconnect. 2013 Cisco and or its affiliates All rights reserved This document is Cisco Public Information Page 13 of 23. Figure 14 shows how a Nexus 6004 would be connected to multiple Nexus 6001 switches Here a structured. cabling trunk is used to connect these devices which could be hundreds of feet apart in separate rows of cabinets. Figure 14 40G Connectivity with Interconnect, Table 5 shows a sample bill of materials for the HDA to EDA connectivity shown in Figures 9 through 14.
Table 5 Sample Bill of Materials,Identifier Part Number Description. D G7575E4TPNDDU100F 144 fiber MTP trunk cable 100 ft. E EDGE CP48 E3 48 fiber 4 port MTP adapter panel, F J937512TE8 NB010F MTP pinned to MTP pinless OM3 jumper Type B polarity 10 ft. G H757908QPH KW010F 8 fiber harness MTP F to 4 LC uniboot OM3 4 and 50 125 24 in LC breakout and overall. length of 10 ft, J H937908QPH KU010F 8 fiber harness MTP pinned 4 LC Uniboot OM3 4 50 125 24 LC breakout and overall. length of 10ft,EDA Connectivity, The equipment distribution area or EDA is the row of computing cabinets this is where the servers storage and. other devices reside The EDA is the access edge of the network Here you will typically find a variety of devices. including the Cisco Nexus 5500 platform Cisco Nexus 2000 Series fabric extenders and Cisco Nexus 6001 The. Cisco Nexus 5500 platform and the Cisco Nexus 6001 can be used as ToR devices They can also be used with. the Cisco Nexus 2000 Series Fabric Extenders to connect a greater number of servers. Because the access edge is typically confined to a row of racks structured cabling can be used and device direct. connections are possible If structured cabling to each server rack is used then the infrastructure will be similar to. that depicted earlier If a direct connect scheme is used then there would be no connector patch panels placed in. the link from the device port to the device In this case a single fiber optic cabling assembly is used to make port. by port connections Figures 15 and 16 show connectivity to ToR devices while figure 17 shows the physical. layout of the equipment in a cabinet In this diagram one can imagine the Cisco Nexus 6004 being located in a. cabinet as an aggregation point for which many servers cabinets containing the Cisco Nexus 6001. 2013 Cisco and or its affiliates All rights reserved This document is Cisco Public Information Page 14 of 23. Figure 15 10 Gbps Connectivity with Interconnect Structured Cabling. Figure 16 10 Gbps Connectivity with Interconnect Structured Cabling. Figure 17 Physical rack layout of 40G connectivity from Nexus 6004 aggregation switch to Nexus 6001 top of rack switch in. server cabinet for simplicity only one server rack is shown. 2013 Cisco and or its affiliates All rights reserved This document is Cisco Public Information Page 15 of 23.


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