High Density Rack Mount Fiber Enclosures for Fiber Adapter Panels and MTP Cassettes

FacebookTwitterGoogle+LinkedInRedditTumblrShare

When you’re dealing with fiber optic patch cables in your network, whether your installation is small or large, simple or complex, your fiber patch cables have to terminate somewhere, so make sure you’ve got the right fiber enclosures solution designed specially to protect them. As we know, fiber enclosures are either for patching or splicing applications. For patching fiber enclosures, which can hold either fiber adapter panels (FAPs) or MTP cassettes. Usually a standard 1RU rack mount fiber enclosure can hold 3 LGX FAPs or cassettes, however, a high density 1RU rack mount fiber enclosure can hold 4 HD FAPs or cassettes, which efficiently optimize space utilization and save more cost in rack cable management.

fiber-enclosures

Fiberstore’s FHD series high density rack mount fiber enclosures, including 1RU (FHD-1UFCE), 2RU (FHD-2UFCE) and 4RU (FHD-4UFCE) types, are designed to hold both FAPs and cassettes and can easily mount in EIA 19-inch racks or cabinets, which provide a comprehensive line of fiber distribution enclosures that provide a high density flexible and modular system for managing fiber terminations, connections, and patching in data center application to maximizing rack space utilization and minimizing floor space.

FHD-1UFCE—High Density 1RU Rack Mount Fiber Enclosures

FHD-1UFCE is an unloaded 1RU rack mount fiber enclosure that can support either 4 FHD fiber adapter panels or 4 FHD MTP modular cassettes, up to 96 fibers. Inside the fiber enclosure, you can install either slack spools or splice trays for patching applications or splicing applications, which provides a complete system solutions for connectivity. As shown in the figure below, its size is 44.4mm(H)x483mm(W)x457.8mm(D). Besides the FHD-1UFCE, we also provide a pre-loaded 4 FHD fiber adapter panels fiber enclosure—FHD-1UCE-4HDLCDMMF.

High Density 1RU Rack Mount Fiber Enclosures

  • Related FHD Adapter Panel & FHD MTP Modular Cassette Size

Fiber Adapter Panels and MTP Cassettes

FHD-2UFCE—High Density 2RU Rack Mount Fiber Enclosures

FHD-2UFCE is an unloaded 2RU rack mount fiber enclosure that can support either 8 FHD fiber adapter panels or 8 FHD MTP modular cassettes, up to 192 fibers. Inside the fiber enclosure, you can also install either slack spools or splice trays for patching applications or splicing applications, which provides higher patch field density in fewer rack units saving valuable space. As shown in the figure below, its size is 88.4mm(H)x447mm(W)x414mm(D).

High Density 2RU Rack Mount Fiber Enclosures

FHD-4UFCE—High Density 4RU Rack Mount Fiber Enclosures

FHD-4UFCE is an unloaded 4RU rack mount fiber enclosure that can support either 12 FHD fiber adapter panels or 12 FHD MTP modular cassettes, up to 228 fibers. Splice tray, cable management loops and slack spools accessories of FHD-4UFCE are simple, which assures flexibility and ease of network deployment and moves, adds, and changes. As shown in the figure below, its size is 177mm(H)x447mm(W)x414mm(D).

High Density 4RU Rack Mount Fiber Enclosures

No matter where your cabling is, or what function you need your fiber enclosures to deliver, FS.COM has the ideal fiber enclosure solution. Our fiber enclosures are available in any configuration and feature industry-leading port density. Both rack mount and wall mount fiber enclosures for single-mode and multimode applications are available. All fiber enclosures are highly adaptable and easy-to-configure design, holding FAP Adapter Panels or MTP Cassette with superior cable management, port identification, fiber accessibility and security.

Can I Use SFP Transceiver in SFP+ slot?

A common confusion about SFP and SFP+ compatibility is that if I can use the SFP module in SFP+ slot. When I connect the SFP transceiver to SFP+ transceiver, can SFP+ negotiate down to 1G? Or is it possible to use SFP+ module in the SFP port on my switch? Can SFP+ copper twinax cable can negotiate down to 1G to support SFP? Can 1G and 10G can exist in the same link? All these questions usually create a giant headache for many engineers. After looking up many relevant documentation, now I will conclusion the answers in this article.

SFP Can be Plugged into SFP+ Ports in Most Situations
I’m not sure about the specific switch model, but as a general rule of thumb, SFPs will work in SFP+ slots, but SFP+ optics do not work in SFP slots. It’s just a power availability thing. When you plug the SFP module in SFP+ port, the speed of this port is 1G not the 10G. And sometimes this port will lock the speed at 1G until you reload the switch or do some fancy set of commands. Besides, the SFP+ port usually can never support speed under 1G. That is to say, we can’t plug the 100BASE SFP in the SFP+ port. In fact, for this question, it may depend greatly on the switch models – sometimes SFPs are supported in SFP+ ports, and sometimes not. For example, almost all SFP+ ports of Cisco switch can support SFPs and many SFP+ ports of Brocade switch only support SFP+. Though it’s feasible often, it’s safer to ask your switch vendor for some information.

SFP module in SFP+ port

SFP+ Can’t Auto-negotiate Down to 1G to Support with SFP Module
To my knowledge, unlike copper SFPs which are available in 10/100/1000 auto-negotiation, optics such as SFP and SFP+ do not support auto negotiation at all. In fact, Most (95+%) SFPs and SFP+s will only run at the rated speed, no more, no less. Besides, there is no such thing as a SFP+ that does 1G on one side (towards the fiber) and then does 10G on another side (towards the unit). Though we can use SFP in SFP+ ports in many cases, that doesn’t mean a SFP+ plugged into the SFP+ port can support 1G. In a fiber link, if we plug a SFP in the SFP+ port on one side (1G), and then plug a SFP+ in the SFP+ port on the another side (10G), this may not work! You just can’t have 10 GbE at one end and 1 GbE at the other. For this question, if you use SFP+ copper twinax cable, it also can’t negotiate down to 1G.

When use SFP and SFP+ modules in your network, make sure the speed of both ends of the fiber link is the same. SFP modules may can be used in SFP+ ports, but a SFP can never be connected to a SFP+ module. For their different speeds, transmission distance and wavelength. 10 SFP+ only can use for 10G SFP+ port, and can never auto-negotiate to 1G.

Compatible SFPs for Ubiquiti EdgeSwitch and UniFi switch

The Ubiquiti EdgeSwitch targets the Broadband / ISP / Carrier market, which offers an extensive suite of advanced layer-2 switching features and protocols, and also provides layer-3 routing capability. The UniFi switch targets the Enterprise / SMB market, which is designed for a wider IT audience, and therefore, tend to be simpler, and easier to use. Both these two types Ubiquiti switchs are supported for SFP fiber connectivity and widely used among people. However, which SFPs can I use with my EdgeSwitch or UniFi switch? This article may give the answer.

Which Ubiquiti EdgeSwitch Should I Use?

The EdgeSwitch offers the forwarding capacity to simultaneously process traffic on all ports at line rate without any packet loss. The EdgeSwitch provides total, non-blocking throughput. Among 8-Port model up to 10 Gbps, 16-Port model up to 18 Gbps, 24-Port model up to 26 Gbps and 48-Port model up to 70 Gbps. The following table lists the comparison between EdgeSwitch modules, according to your specific need to choose the right one.

Model Total Non-Blocking Throughput Gigabit RJ45 Ports SFP+ Ports SFP Ports Max. Power Consumption
ES- 8- 150W 10 Gbps 8 N/A 2 150W
ES- 16- 150W 18 Gbps 16 N/A 2 150W
ES- 24- 250W 26 Gbps 24 N/A 2 250W
ES- 24- 500W 26 Gbps 24 N/A 2 500W
ES- 48- 500W 70 Gbps 48 2 2 500W
ES- 48- 750W 70 Gbps 48 2 2 750W
ES- 24- LITE 26 Gbps 24 N/A 2 25W
ES- 48- LITE 70 Gbps 48 2 2 56W
ES- 12F 16 Gbps 4 N/A 12 56W
ES- 16- XG 124 Gbps 4 12 N/A 56W
EdgeMAX – Which SFPs are compatible with EdgeSwitch?

The ubnt edgeswitch provides fiber connectivity options for your growing networks. The 8, 16, and 24-port models include two SFP ports, providing up to 1 Gbps uplinks. For high-capacity uplinks, the 48-port models include two SFP and two SFP+ ports, providing uplinks of up to 10 Gbps. Take the ES‑8‑150W for example, it has 8 Gigabit RJ45 ports and 2 Gigabit SFP ports for 10G applications (shown in the figure below). For SFP ports, we should use SFP modules and fiber patch cable.

Ubiquiti ES- 8- 150W
According to an article titled “Which SFPs are compatible with the EdgeSwitch?”published in Ubiquiti Help Center, the following SFP transceivers are compatible with EdgeSwitch (only listed can be found in Fiberstore here).

SFP Model Description
Cisco GLC-SX-MM 1000BASE-SX SFP 850nm 550m Transceiver
Cisco GLC-SX-MMD 1000BASE-SX SFP 850nm 550m DOM Transceiver
HP J4858C 1000BASE-SX SFP 850nm 550m DOM Transceiver
HP J4858A 1000BASE-SX SFP 850nm 550m DOM Transceiver
Cisco GLC-LH-SM 1000BASE-LX/LH SFP 1310nm 10km Transceiver
HP J4859B 1000BASE-LX SFP 1310nm 10km DOM Transceiver
HP J4859C 1000BASE-LX SFP 1310nm 10km DOM Transceiver
Finisar FTLF1318P3BTL 1000BASE-LX and 1G Fibre Channel SFP 1310nm 10km IND DOM Transceiver
Cisco GLC-T 1000BASE-T SFP Copper RJ-45 100m Transceive
Cisco SFP-H10GB-CU1M 1m 10G SFP+ Passive Direct Attach Copper Twinax Cable
Brocade 10G-SFPP-TWX-0101 1m 10G SFP+ Passive Direct Attach Copper Twinax Cable
Finisar FTLX8571D3BCL 10GBASE-SR/SW SFP+ 850nm 300m DOM Transceiver
Finisar FTLX1371D3BCL 10GBASE-LRM SFP+ 1310nm 220m DOM Transceiver
Which Ubiquiti UniFi Switch Should I Use?

The UniFi POE switch offers the forwarding capacity to simultaneously process traffic on all ports at line rate without any packet loss. For its total, non-blocking throughput, the 24port model supports up to 26 Gbps, while the 48-port model supports up to 70 Gbps. The following table lists the comparison between UniFi switch modules, according to your specific need to choose the right one.

Model Total Non-Blocking Throughput Gigabit RJ45 Ports SFP+ Ports SFP Ports Max. Power Consumption
US- 8- 150W 10 Gbps 8 N/A 2 150W
US- 16- 150W 18 Gbps 16 N/A 2 150W
US- 24- 250W 26 Gbps 24 N/A 2 250W
US- 24- 500W 26 Gbps 24 N/A 2 500W
US- 48- 500W 70 Gbps 48 2 2 500W
US- 48- 750W 70 Gbps 48 2 2 750W
UniFi – Which SFPs are compatible with UniFi Switch?

Each model includes two SFP ports for uplinks of up to 1 Gbps. The 48port model adds two SFP+ ports for high-capacity uplinks of up to 10 Gbps, so you can directly connect to a highperformance storage server or deploy a longdistance uplink to another switch. Take the US- 8- 150W for example, it has 8 Gigabit RJ45 ports and 2 Gigabit SFP ports for 10G applications (shown in the figure below). For SFP ports, we should use SFP modules and fiber patch cable.

us-8-150w
According to an article titled “Which SFPs can I use with UniFi switch?”published in Ubiquiti Help Center, the following SFP transceivers are compatible with EdgeSwitch. Since among some SFP module types are the same as the EdgeSwitch, I only list the different SFPs here.

SFP Model Description
Fiberstore SFP-1G85-5M

Now: SFP1G-SX-85

1000BASE-SX SFP 850nm 550m DOM Transceiver
Cisco SFP-10G-SR 10GBASE-SR SFP+ 850nm 300m DOM Transceiver
Fiberstore SFP-10G85-3M

Now:
SFP-10GSR-85

10GBASE-SR SFP+ 850nm 300m DOM IND Transceive
Ubiquiti Compatible SFPs in Fiberstore

Fiberstore (FS.COM) provides a series of Ubiquiti compatible SFP transceivers that can be used with EdgeSwitch and UniFi switch. In Ubiquiti Networks Community SFP modules compatibility section, some people tested Fiberstore SFP modules in their EdgeSwitch. As shown in the figure below, SFP1G-SX-85, SFP1G-SX-31 and SFP-10GSR-85 SFPs are working.

sfp-modules-compatibility

What Is The Difference: SFP vs SFP+

As we know, a SFP module just looks the same as the SFP+ module. And most switches can both support SFP module and SFP+ module. So, do these two modules really refer to the same one? What’s the difference between them?

SFP vs SFP+

SFP Definition
SFP stands for Small Form-factor Pluggable. It is a hot-pluggable transceiver that plugs into the SFP port of a network switch and supports SONET, Gigabit Ethernet, Fibre Channel, and other communications standards. SFP specifications are based on IEEE802.3 and SFF-8472. They are capable of supporting speeds up to 4.25 Gbps. Due to its smaller size, SFP replaces the formerly common gigabit interface converter (GBIC). Therefore SFP is also called Mini-GBIC. By choosing different SFP module, the same electrical port on the switch can connect to different fiber types (multimode or single-mode) and different wavelengths.

SFP module Cisco

SFP+ Definition
Since SFP supports only up to 4.25 Gbps, SFP+ that supports data rates up to 16 Gbps was later introduced. In fact, SFP+ is an enhanced version of the SFP. The SFP+ specifications are based on SFF-8431. In today’s most applications, SFP+ module usually supports 8 Gbit/s Fibre Channel, 10 Gigabit Ethernet and Optical Transport Network standard OTU2. In comparison to earlier 10 Gigabit Ethernet XENPAK or XFP modules, SFP+ module is smaller and becomes the most popular 10 Gigabit Ethernet module in the market.

SFP+ module Cisco

SFP vs SFP+
Review the SFP and SFP+ definition mentioned above, we can know that the main difference between SFP and SFP+ is the data rate. And due to different data rate, the applications and transmission distance is also different.

Ethernet Application

SFP (1Gbps) SFP+ (10Gbps)
1000BASE-SX SFP 850nm 550m

1000BASE-LX/LH SFP 1310nm 20km

1000BASE-EX SFP 1310nm 40km

1000BASE-ZX SFP 1550nm 80km

10GBASE-SR SFP+ 850nm 300m

10GBASE-LRM SFP+ 1310nm 220m

10GBASE-LR SFP+ 1310nm 10km

10GBASE-ER SFP+ 1550nm 40km

10GBASE-ZR SFP+ 1550nm 100km

Fiber Channel Application

SFP (2G, 4G) SFP+ (8G)
2.125Gbps:

2G Fibre Channel SFP 1310nm 2km/15km/20km/40km

2G Fibre Channel SFP 1510nm 80km

4.25Gbps:

4G Fibre Channel SFP 850nm 150m

4G Fibre Channel SFP 1310nm 5km/10km/15km/20km

8.5Gbps:

8G Fibre Channel SFP+ 850nm 150m

8G Fibre Channel SFP+ 1310mn 10km/20km/40km

8G Fibre Channel SFP+ 1510nm 80km

SONET/SDH Application

SFP (155Mbps, 622Mbps, 2.5Gbps) SFP+ (10G)
155Mbps:

OC-3/STM-1 1310nm 2km/15km/40km

OC-3/STM-1 1510nm 80km

622Mbps:

OC-12/STM-4 1310nm 500m/2km/15km/40km

OC-12/STM-4 1510nm 80km

2.5Gbps:

OC-48/STM-16 1310nm 2km/15km/40km

OC-48/STM-16 1510nm 80km

OC-192/STM-64 850nm 300m

OC-192/STM-64 1310nm 2km/10km/20km/40km

OC-192/STM-64 1510nm 80km

Usually, SFP module plugs into SFP port of the switch and SFP+ module plugs into SFP+ port of the switch. But, sometimes SFP module can also be plugged into SFP+ port. Which SFP or SFP+ module should you choose all depends on your switch types. Fiberstore is a reliable SFP transceiver module manufactures, all SFP module and SFP+ module types are available in FS.COM. Besides, SFP+ cable is also provided. What’s more, the price of SFP module and SFP+ module is lower than many other manufactures. SFP test is strict in FS.COM. Matching fiber patch cable is also available.

How to Choose the Right Rack Mount Fiber Enclosures?

Fiber enclosure can provide easy-to-manage cabling environments and strong protection for fiber optic cables. Since more and more cables used in today’s data centers, high-density cable management tools also become more popular and essential than before. However, there are so many fiber enclosure manufacturers and suppliers, and the rack mount fiber enclosures supplied therefore available in different sizes and applications. How to choose the rack mount fiber enclosures for your network?

Rack Mount Enclosures Configurations
The rack mount fiber enclosure is generally made for standard 19 inch rack mounting. Depending on the number of connections required, they are available in one or more rack units (RU) height configurations, such as 1RU, 2RU or 4RU, etc. See the picture below, you should choose the most proper one depending on the space and port requirement of your network.

fiber enclosures

Rack Mount Enclosures Mount Types
1RU rack mount fiber enclosures are the most commonly used size in data center server racks cable management. For convenient installation and cable management, there are cover removable, slide-out and swing-out three mount types fiber enclosures to choose from. The cover removable type is an early type of fiber enclosures. If your budget is sufficient, I will recommend you to use the slide-out type or swing-out type though they are more expensive than the cover removable type. But you may get more benefits during installation and maintenance, as they respectively feature a convenient slide-out support tray and an integrated swing-out tray so that you don’t need to remove the whole enclosure from the rack to gain internal access.

222

Rack Mount Fiber Enclosures Applications
Fiber enclosure has various designs and applications. There are mainly three ways to use the fiber enclosures, which are depended on the accessories that are installed on the fiber enclosure. The following will take a slide-out 1RU rack mount fiber enclosure as example to illustrate the applications of the fiber enclosures in data center. Installed with splice trays, fiber adapter panels and MTP cassettes separately, fiber enclosure can provide cabling environment for different connections.

Application 1: Installing splice tray and FAPs
Installing four fiber adapter panels on the front panel and one or more splicing trays inside the enclosure drawer. This fiber enclosure can provide cable management and protection for splicing joints and connections.

splice tray and fiber adapter panels
Application 2: Installing Spools and FAPs
Installing two spools on the enclosure drawer and four FAPs on the front panel, this fiber enclosure can provide flexible high density cabling for fiber patch cables.

Spools and fiber adapter panels
Application 3: Installing HD MTP Cassettes
Up to four MTP Cassettes can be installed in this 1U fiber enclosure, which can provide 40G/100G to 10G high cabling density and easy transferring from MTP interface to LC interface.

MTP Cassettes

Conclusion
After reading the passage, we know that rack mount fiber enclosures may be available in different sizes, mount types and applications. Thus to choose a right fiber enclosure seems not a simple thing. FS.COM offers a wide range of rack mount enclosures, as well as custom service, which can help address all kinds of your requirements. For more details, please contact us via sales@fs.com or call 24/7 Customer Service: 1 (718) 577 1006.

Related Article: Upgrade to 40G / 100G Networks with High-Density Fiber Enclosures

Why Not Use Cable Lacing Bars to Manage Your Messy Cables?

Cable lacing bars, also called lacer bars, consist of a metal bar that mounts to the rear of a standard 19″ rack or cabinet, behind a patch panel. These bars provide support and management of cables that are secured to the bar with cable ties or adjustable clips. Each cable lacing bar occupies 1/3 to 2/3 of a rack space and can secure and manage up to 24 cables in 1 RU. They are usually used to support and manage cables in telecommunication rooms, which provide strain relief, bend radius control, superior aesthetics and improve organisation and routing of cable.

cable lacing bars

How to Use the Cable Lacing Bars?
In fact, the process of installing a cable lacing bar is very easy. As shown in the figure below, we only need to install the cable lacing bar to the rack firstly, and then use the cable tie to fix the cables to the cable lacing bar.

lacing bars

Which Type Cable Lacing Bars Should I Choose?
In order to meet different cabling management needs, there are also many different cable lacing bars available in the market. Below some common cable lacing bars are listed, and you can choose the right one for your network according to your specific cabling environment.
1. Round Lacer Bars
Use the 1RU round lacer bar when a small profile is required and for lacing small or individual horizontal cable runs. 1/4” diameter rod with flattened ends.

Round Lacer Bars
2. Rectangular Lacer Bars
Use the 1RU aluminum lacer bar when lacing cables vertically or horizontally. Aluminum construction provides the ability to drill holes to attach tie saddles, mount electrical boxes, etc. This lacer bar can also be used to support the rear of equipment. 1/4” diameter rod with flattened ends.

Rectangular Lacer Bars
3. L-Shaped Lacer Bars
“L” shaped lacer bars are strong and provide fixed tie points. Recommended for larger runs of cable. They are available in 2”, 4” and 6” offset. Choose the appropriate offset bar based on the distance from the rear of equipment to the rack rail.

L-Shaped Lacer Bars
4. Round Lacer Bars with Offset
Use the round lacer bar with offset when lacing small bundles or individual cables off the rear of equipment, patch panels and other components to relieve cable stress from the connections. They are available in 1.5” offset and 4” offset respectively (figure below). Choose the appropriate offset based on the distance from the rear of equipment to the rack rail. 1/4” diameter rod with flattened ends.

Round Lacer Bars with Offset
5. 90º Bend Lacer Bars
These 90° bend offset lacer bars are similar to other offset round lacer bars, but feature 90° bends to provide full-width support. Can also be used to provide clearance around components that extend past the rear rack rail (16-5/8” open width). 1/4” diameter rod with flattened ends.

90º Bend Lacer Bars
6. Horizontal Lacer Panel
Use the horizontal lacer panel for lacing large amounts of cable or mounting devices. Two rack space high, the horizontal lacer panel features a large flange, numerous cable tie points and more surface for mounting.

Horizontal Lacer Panel

Cable lacing bars are a useful and cost effective cable management solution for rack or enclosure systems. These bars are essential in helping avoid cable strain especially when trying to run cables from one side of the enclosure to the other. FS.COM offers a full line of cable lacing bars to fit a variety of applications offering end users flexibility and convenience to prevent cable strain. Higher density applications may be addressed with FS.COM cable manager.

Three Kinds of Polarity Reversal Methods of LC Uniboot Patch Cords

As the networking environment of today becomes increasingly dependent on high-speed and high-density solutions, effective cable management is a real problem. The challenge is how to manage more cables in a smaller amount of space. The LC uniboot patch cord utilises a special “round duplex” cable that allows duplex transmission within a single 2.4mm or 3.0mm cable, which reduces cable management space by up to 70% comparing to standard LC patch cords. Besides, it has a unique polarity reversal design allows the fiber polarity to be easily switched without the use of any tools. In today’s LC uniboot patch cords market, there are usually three methods to reverse the polarity.

Method One
1. Open connector top.

11
2. Switch the polarity.

22
3. Close connector top.

33

Method Two
1. Locate trigger housing on LC uniboot connector and pull towards the boot.

1
2. Open trigger housing is resting on the boot turn each LC connector to the outside 180 degrees one at a time.

888
3. Complete the polarity reversal by turning the resting trigger housing 180 degrees around boot and click into LC until you hear a click.

000

Method Three
1. Connector Polarity
Uncrossed lines under the connector latch on the housing at both ends indicates uncrossed fiber polarity A-B/B-A.

1
2. Unlock Front Housing on One End
Push the keys on either side to unlock the housing to remove the front section of the Uniboot housing.

2

3. Remove Front Housing
Slide the front housing away from the rest of the Uniboot.

3
4. Rotate Front Housing
Flip the released section of the housing. Do not rotate or twist the fiber.

4
5. Attach Front Housing
Push the housing back over the ends and the rest of the Uniboot connector until it clicks back into place.

5
6. Connector Polarity
Finished result should now show crossed lines under the flipped connector latch and uncrossed lines on the unaltered end. This would indicate a crossed fiber polarity A-A/B-B.

6

Different kind of LC uniboot patch cords may have different polarity reversal design, therefore we must use different method to change the polarity. When you choose to use LC uniboot patch cords in your network, keep in mind to take the polarity reversal methods in to consideration. FS.COM LC uniboot patch cords (easily reverse the polarity with method one) terminated with premium grade zirconia ceramic ferrule connectors which help assure high transmission quality and low optical power loss and offer improved airflow and visibility of equipment within a high-density network environment.

How to Choose SFP+ Transceivers for Cisco Catalyst 4500 Series Switch

The Cisco catalyst 4500 series switches provide high performance, mobile, and secure user experiences through Layer 2-4 switching investments. Since they have a centralized forwarding architecture that enables collaboration, virtualization, and operational manageability through simplified operations, therefore, more and more people choose to use 4500 series switches in their network. As we know, once we use a switch, we may use some transceiver modules. In this article, some SFP+ transceivers that supported for catalyst 4500 series switches will be introduced.

Cisco Catalyst 4500 Series Switch Overview
Cisco catalyst 4500 series switches include 4500 Series and 4500E Series switches. Among, 4500 series include Catalyst 4503 Switch, Catalyst 4506 Switch, Catalyst 4507R Switch, Catalyst 4510R Switch. With forward and backward compatibility spanning multiple generations, the new Cisco Catalyst 4500E Series provides exceptional investment protection and deployment flexibility to meet the evolving needs of organizations of all sizes, which include Catalyst 4503-E Switch, Catalyst 4506-E Switch, Catalyst 4507R+E Switch and Catalyst 4510R+E Switch. SFP+ ports operate in full-duplex mode and are present on the WS-X4516-10GE and WS-X4013+10GE supervisors, as well as some line cards. These ports use the 10GBASE-SR, 10GBASE-LRM and 10GBASE-LR SFP+. SFP+ connectors vary with interface type and may use multimode fiber (MMF) or single-mode fiber (SMF) cable.

catalyst-4500-series

Supervisor Engine for Catalyst 4500 Series Switch
The Cisco supervisor engine is the brain of many of Cisco’s switches, which refers to specific modules that can be placed in a modular chassis. Cisco 4500 series and 6500 series switches both require supervisor engines to work. In fact, the transceivers type depends on the port type of supervisor engine. So, it’s necessary to identify the port type of your supervisor engines first. In following table, I display some supervisor engines that both supported for Catalys 4500 Series Switches and SFP+ transceivers. Please note that WS-X4516-10GE, WS-X4013+10GE, WS-X45-Sup6-E, WS-X45-Sup6L-E and WS-X4606-X2-E can also be used for X2 transceivers with CVR-X2-SFP10G converter.

Cisco Catalyst 4500 Series Supervisor Engine V-10GE
WS-X4516-10GE 2×10 Gigabit Ethernet (X2 or SFP+) or 4X1 Gigabit Ethernet (SFP)
Cisco Catalyst 4500 Series Supervisor Engine II-Plus-10GE
WS-X4013+10GE 2x10GE (X2 or SFP+) and 4×1 Gigabit Ethernet (SFP)
Cisco Catalyst 4500E Supervisor Engine 6-E And 6L-E
WS-X45-Sup6-E 2×10 Gigabit Ethernet (X2 or SFP+) or 4×1 Gigabit Ethernet (SFP), Console RJ-45, USB
WS-X45-Sup6L-E 2×10 Gigabit Ethernet (X2 or SFP+) or 4×1 Gigabit Ethernet (SFP), Console RJ-45
Cisco Catalyst 4500E Series Line Cards
WS-X4606-X2-E 6×10 Gigabit Ethernet (X2 or SFP+)
WS-X4712-SFP+E 12×10 Gigabit Ethernet (SFP+)
Cisco Catalyst 4500E Series Supervisor Engine 7-E And 7L-E
WS-X45-SUP7-E 4×10 Gigabit Ethernet uplinks (SFP+)
WS-X45-SUP7L-E 2×10 Gigabit Ethernet uplinks (SFP+) or 4×1 Gigabit Ethernet uplinks (SFP)
Cisco Catalyst 4500E Series Supervisor Engine 8-E And 8L-E
WS-X45-SUP8-E 8×10 Gigabit Ethernet uplinks (SFP+)
WS-X45-SUP8L-E 4×10 Gigabit Ethernet uplinks (SFP+) or 4×1 Gigabit Ethernet uplinks (SFP)

SFP+ Transceivers for Cisco Catalyst 4500 Series Switch
According to Cisco 10-Gigabit Ethernet Transceiver Modules Compatibility Matrix, all supervisor engines mentioned above can support SFP-10G-SR, SFP-10G-LRM, SFP-10G-LR, SFP-10G-SR-S and SFP-10G-LR-S SFP+ transceivers. Besides, WS-X4712-SFP+E, WS-X45-SUP7-E, WS-X45-SUP7L-E, WS-X45-SUP8-E and WS-X45-SUP8L-E can also support SFP-10G-ER, SFP-10G-ZR, SFP-10G-ER-S and SFP-10G-ZR-S SFP+ transceivers. All SFP+ transceievrs can be found in FS.COM.

WS-X4516-10GE, WS-X4013+10GE, WS-X45-Sup6-E, WS-X45-Sup6L-E, WS-X4606-X2-E, WS-X4712-SFP+E, WS-X45-SUP7-E, WS-X45-SUP7L-E, WS-X45-SUP8-E and WS-X45-SUP8L-E
SFP-10G-SR Cisco SFP-10G-SR Compatible 10GBASE-SR SFP+ 850nm 300m DOM Transceiver, $ 16
SFP-10G-LRM Cisco SFP-10G-LRM Compatible 10GBASE-LRM SFP+ 1310nm 220m DOM Transceiver, $ 34
SFP-10G-LR Cisco SFP-10G-LR Compatible 10GBASE-LR SFP+ 1310nm 10km DOM Transceiver, $ 34
SFP-10G-SR-S Cisco SFP-10G-SR-S Compatible 10GBASE-SR SFP+ 850nm 300m DOM Transceiver, $ 16
SFP-10G-LR-S Cisco SFP-10G-LR-S Compatible 10GBASE-LR SFP+ 1310nm 10km DOM Transceiver, $ 34
WS-X4712-SFP+E, WS-X45-SUP7-E, WS-X45-SUP7L-E, WS-X45-SUP8-E and WS-X45-SUP8L-E
SFP-10G-ER Cisco SFP-10G-ER Compatible 10GBASE-ER SFP+ 1550nm 40km DOM Transceiver, $ 180
SFP-10G-ZR Cisco SFP-10G-ZR Compatible SFP+ 1550nm 80km DOM Transceiver, $ 400
SFP-10G-ER-S Cisco SFP-10G-ER-S Compatible 10GBASE-ER SFP+ 1550nm 40km DOM Transceiver, $ 180
SFP-10G-ZR-S Cisco SFP-10G-ZR-S Compatible 10GBASE-ZR SFP+ 1550nm 80km DOM Transceiver, $ 400

Unveil Polarity of MTP/MPO Multi-Fiber Cable Solutions

With widespread deployment of 40G and 100G networks, high-density MTP/MPO cable solutions are also become more and more popular. Unlike traditional 2‐fiber configurations LC or SC patch cords, with one send and one receive, 40G & 100G Ethernet implementations over multimode fibers use multiple parallel 10G connections that are aggregated. 40G uses four 10G fibers to send and four 10G fibers to receive, while 100G uses ten 10G fibers in each direction. MTP/MPO cable can hold 12 or 24 fibers in a connector, which greatly facilitates the upgrade to 40G and 100G networks. However, since there are so many fibers, the polarity management of the MTP/MPO cable may be a problem.

Structure of MTP/MPO Connectors
Before explaining the polarity, it is important to learn about the structure of MTP/MPO connector first. Each MTP connector has a key on one side of the connector body. When the key sits on top, this is referred to as the key up position. In this orientation, each of the fiber holes in the connector is numbered in sequence from left to right. We will refer to these connector holes as positions, or P1, P2, etc. Each connector is additionally marked with a white dot on the connector body to designate the position 1 side of the connector when it is plugged in.

666

Structure of MTP/MPO Adapters
Since the MTP connectors can either key up and key down, there are two types of MPO adapters.

  • Type A: Key-up to key-down

Here the key is up on one side and down on the other. The two connectors are connected turned 180° in relation to each other.

  • Type B: Key-up to key-up

Both keys are up. The two connectors are connected while in the same position in relation to each other.

555

Two Polarity of Traditional Duplex Patch Cable
Classic duplex cables are available in a cross-over version (A-to-A) or a straight-through version (A-to-B) and are terminated with LC or SC connectors. Telecommunications Cabling Standard defines the A-B polarity scenario for discrete duplex patch cords, with the premise that transmit (Tx) should always go to receive (Rx) — or “A” should always connect to “B”. Therefore, A-B polarity duplex is very common in applications.

777

Three Polarity of MTP/MPO Multi-Fiber Cable
Unlike traditional duplex patch cables, there are three polarity for MTP/MPO cables: polarity A, polarity B and polarity C.

  • Polarity A

Polarity A MTP cables use a key up, key down design. Therefore, as shown in the figure below, the position 1 of one connector is corresponding to the position 1 of another connector. There is no polarity flip. Therefore, when we use polarity A MTP cable for connection, we must use A-B duplex patch cables on one end and A-A duplex patch cables on the other end. Since in this link, Rx1 must connect to Tx1. If we don’t use A-A duplex patch cable, according to the design principle of polarity A MTP cable, fiber 1 may transmit to fiber 1, that is to say Rx1 may transmit to Rx1, which may cause errors.

111

  • Polarity B

Polarity B MTP cables use a key up, key up design. Therefore, as shown in the figure below, the position 1 of one connector is corresponding to the position 12 of another connector. Therefore, when we use polarity B MTP cable for connection, we should use a A-B duplex patch cables on both ends. Since the key up to key up design help to flip the polarity, which makes fiber 1 transmit to fiber 12, that is the Rx1 transmits to Tx1.

222

  • Polarity C

Like the polarity A MTP cables, polarity C MTP cables also use a key up, key down design. However, within in the cable, there is a fiber cross design, which makes the position 1 of one connector is corresponding to the position 2 of another connector. As shown in the figure below, when we use polarity C MTP cable for connection, we should use a A-B duplex patch cables on both ends. Since the cross fiber design help to flip the polarity, which makes fiber 1 transmit to fiber 2, that is the Rx1 transmits to Tx1.

333

Conclusion
Different polarity MTP cables may have different connection methods. No matter which type cable you choose, remember its design principle and choose the right cabling infrastructure for your network. FS.COM provides a full range of MTP cables and MTP cassettes,  polarity A, B and C are all available.

10G Cabling Solution: SFP+ Transceiver, SFP+ Twinaxial Cable or Cat6 Copper Cable?

When you’ve selected the server, storage and switch to setup your data center, then how do you connect it all together? There’s no doubt that the answer is “with cables.” Let’s look at the three most common cables that used to connect the servers and storage to switches in a 10G network. They are SFP+ transceiver (used with patch cable), SFP+ twinaxial cable and Cat6 copper cable. Which one should you choose? Let’s find the answer together!

10G Cabling Solution

SFP+ Transceiver
This connection methods requires two things on each device: 10G pluggable SFP+ transceivers and fiber optic patch cables. Once these are in place on both devices (server and switch), you can plug the patch cords into the transceiver on both sides. These SFP+ optical transceivers use approximately 1 W per transceiver and have a latency of less than 0.1 microsecond. SFP+ transceivers come in different types to drive signals across fiber optic cables with different maximum distances. The most common, and lowest in cost, is 10GBase-SR, which can span 300 meters. Other types can reach as far as 100 kilometers.

SFP+ transceivers

Pros: This connectivity method supports fiber cables that are really long, allowing you to connect a server at one end of a data center to a switch several racks away or even at the other end.
Cons: Pluggable transceiver parts are quite expensive.

SFP+ Twinaxial Cable
SFP+ twinaxial direct attach cable (DAC) integrates transceivers with twinax cables into an energy efficient, low-cost, and low-latency solution. It features SFP+ connectors on both ends, thus eliminating the need for expensive SFP+ transceivers. SFP+ twinaxial cables use only 1.5 watts of power per port and introduce only approximately 0.25 microsecond of latency per link. This makes it an optimal solution for handling high bandwidth transmission within short distances such as inside energy-efficient data centers.

SFP+ Twinaxial Cable

Pros: Lower latency, lower power and lower heat.
Cons: Transmission distance is usually less than 10 meter.

10GBASE-T: Cat6 Copper Cable
This option probably looks familiar – like the RJ-45 ports and cabling you use to connect your laptop to a normal network jack. The difference is that you need specialized network adapters with ports that support faster 10G throughput. Cat6 cables have more individual copper wires, twisted tighter, with better shielding to prevent outside signal interference. They cost more than CAT5 but ensure better signal communication, which is a requirement to speed up to 10G. Cat6 copper cables use 5 watts of power per port and introduce approximately c of latency per link, which is much higher than SFP+ optics and SFP+.

10GBASE-T structured-cabling

Pros: Longer distance – 100 meters. Backward compatibility to 1 gigabit Ethernet or 100 megabit Ethernet
Cons: Higher latency, higher power and higher heat. Not many data center switches support 10GBASE-T ports.

Conclusion
Vita differences of these three 10G cabling solutions are displayed in the table below. According to your demands to choose the right one.

Name Transmission Distance Latency Power
SFP+ Transceiver 300 m – 100 km 0.1 microsecond 1 watts
SFP+ Twinaxial Cable 10 m 0.25 microsecond 1.5 watts
Cat6 Copper Cable 100 m 2.6 microsecond 4 – 6 watts