What's the function of the Cisco module

What's the function of the Cisco light module ?

Cisco module classification and description:

1 Cisco 1 × 9 package optical modules: welding type module, general speed is less than1000m, using SC interface.

2 SFF package, Cisco optical module: welding small package module, general speed is less than 1000m, using LC interface.

3 GBIC package, Cisco optical module: hot pluggable Gigabit interface module, using SC interface.

4 SFP package, Cisco optical module: hot plug small package module, the highest rate of up to 4G, use the LC interface.

5 XENPAK package, Cisco optical module: applications in Gigabit Ethernet, using the SC interface.

The optical module is connected to the module of a photoelectric conversion effect, which transmit the electric signal into optical signal, the optical fiber transmission, the receiving end ofthe optical signals are converted into electric signals. The optoelectronic devices, circuits andoptical interface and other components, optoelectronic devices including the transmitting and receiving two parts.

Cisco 4500 6500 and 7600 are modular design, apart from the main chassis, supervisor engine,linecard, power supplies and modules will be also required for these products. 3Anetwork.comwholesales Cisco 450065007600 Modules, ship to worldwide.

WS-X6748-GE-TX, WS-X6724-SFP the popular cisco module up to 50% off on 3anetwork.com.

Removing SFP and SFP+ Transceiver Modules

Caution 1: The SFP and SFP+ transceiver modules are static sensitive devices. Always use an ESD wrist strap or similar individual grounding device when handling the transceiver modules or coming in contact with modules, I use the Cisco SFP GLC-SX-MMD and SFP-10G-LR most time on the network.

Caution 2: Be careful when removing GLC-GE-100FX SFPs from a WS-C3750G-12S-S switch. The SFP transceiver module temperature might go over 160°F (70°C) and be too hot to touch with bare hands.

If you are removing an SFP or SFP+ transceiver module, follow these steps:

Step 1 Attach an ESD-preventive wrist strap to your wrist and to the ESD ground connector or a bare metal surface on your chassis.

Step 2 Disconnect the network fiber-optic cable or network copper cable from the transceiver module connector. For optical transceiver modules, immediately reinstall the dust plugs in the transceiver module's optical bores and the fiber-optic cable LC connectors.

Tip: For reattachment of fiber-optic cables, note which connector plug is send (TX) and which is receive (RX).

Step 3 Release and remove the transceiver module from the socket connector, as shown in Figure 1 , Figure 2, Figure 3, or

•If the SFP transceiver module has a Mylar tab latch, pull the tab gently in a slightly downward direction until the transceiver disengages from the socket connector, and then pull the SFP transceiver module straight out. Do not twist or pull the Mylar tab because you could detach it from the SFP transceiver module.

Figure 1 Removing an SFP Transceiver Module Equipped with a Mylar Tab

•If the SFP transceiver module has an actuator button latch, gently press the actuator button on the front of the SFP transceiver module until it clicks and the latch mechanism releases the SFP transceiver module from the socket connector. Grasp the actuator button between your thumb and index finger, and carefully pull the SFP transceiver module straight from the module slot.

Figure 2 Removing an SFP Transceiver Module Equipped with an Actuator Button Latch

•If the SFP transceiver module has a bail clasp latch, pull the latch out and down to eject the SFP transceiver module from the socket connector. If the bail clasp latch is obstructed and you cannot use your index finger to open it, use a small, flat-blade screwdriver or other long, narrow instrument to open the bail clasp latch. Grasp the SFP transceiver module between your thumb and index finger, and carefully remove it from the socket.

Figure 3 Removing an SFP Transceiver Module Equipped with a Bail Clasp Latch

•The SFP+ transceiver uses a bail clasp style latch which is slightly different than the bail clasp latch for the SFP transceiver. The SFP+ transceiver bail clasp has a small tab protruding down from the bail clasp handle To release the SFP+ bail clasp, push the small tab up and outwards with your index finger to release the bail clasp. Grasp the SFP+ transceiver between your thumb and index finger and carefully remove the transceiver from the socket.

Figure 4 Removing an SFP+ Transceiver Equipped with a Bail Clasp Latch with Tab

Step 4 Place the removed transceiver module in an antistatic bag or other protective environment.

Installing SFP and SFP+ Transceiver Modules

Installing SFP and SFP+ Transceiver Modules

Required Tools

You will need these tools to install the SFP transceiver module:

1 Wrist strap or other personal grounding device to prevent ESD occurrences.

2 Antistatic mat or antistatic foam to set the transceiver on.

Note: Fiber-optic end-face cleaning tools and inspection equipment. For complete information on inspecting and cleaning fiber-optic connections, see the white-paper document at this URL:

http://www.cisco.com/en/US/tech/tk482/tk876/technologies_white_paper09186a0080254eba.shtml

SFP transceiver modules can have three types of latching devices to secure an SFP transceiver module in a port socket:

•Figure 1 shows an SFP transceiver module with a Mylar tab latch.

•Figure 2 shows an SFP transceiver module with an actuator button latch.

•Figure 3 shows an SFP transceiver module that has a bail clasp latch.

•Figure 4 shows an SFP+ transceiver module that has a bail clasp latch.

Determine which type of latch your SFP transceiver module uses before following the installation and removal procedures.

Caution 1 Do not install or remove the SFP transceiver module with fiber-optic cables still attached to it. Doing so may damage cables, cable connectors, or the optical interfaces and may interfere with the SFP transceiver module latching properly into its socket connector. Disconnect all cables before removing or installing an SFP transceiver module.

Caution 2 The SFP transceiver modules are static sensitive devices. Always use an ESD wrist strap or similar individual grounding device when handling SFP transceiver modules or coming in contact with modules.

Figure 1 SFP Transceiver Module with a Mylar Tab Latch

Figure 2 SFP Transceiver Module with an Actuator Button Latch

Figure 3 SFP Module with a Bail Clasp Latch

Figure 4 SFP+ Module with a Bail Clasp Latch

To install an SFP transceiver module, follow these steps:

Step 1 Attach an ESD-preventive wrist strap to your wrist and to the ESD ground connector or a bare metal surface on your chassis.

Step 2 Remove the SFP transceiver module from its protective packaging.

Note Do not remove the optical bore dust plugs until directed to do so later in the procedure.

Step 3 Check the label on the SFP transceiver module body to verify that you have the correct model for your network.

Step 4 Find the send (TX) and receive (RX) markings that identify the top side of the SFP transceiver module.

Note On some SFP transceiver modules, the TX and RX marking might be replaced by arrowheads pointing from the SFP transceiver module connector (transmit direction or TX) and toward the connector (receive direction or RX).

Step 5 Position the SFP transceiver module in front of the socket opening.

Note Different Cisco devices have different SFP module socket configurations. Your Cisco device could have either a latch-up or a latch-down orientation. Ensure that you are installing the SFP transceiver module in the correct orientation for your Cisco device. For more details, see the hardware installation instructions that came with your Cisco device.

Step 6 Holding it as shown in Figure 5, insert the SFP into the socket until you feel the connector latch into place.

Figure 5 Inserting an SFP Transceiver Module into a Module Socket

Step 7 Press the SFP into the slot firmly with your thumb as shown in Figure 6

Note For SFP transceiver modules equipped with an actuator latch, you must press firmly on both the transceiver faceplate and the actuator button to ensure that the transceiver is properly latched in the socket.

Figure 6 Latching the SFP

Step 8 To verify that the SFP is seated and latched properly:

a. Grasp the SFP as shown in Figure 10 and try to remove it without releasing the latch.

b. If the SFP can not be removed, it is installed and seated properly. If the SFP can be removed, reinsert it and press harder with your thumb, repeating if necessary until it is latched securely into the socket.

Figure 7 Verifying SFP Installation

Note For optical SFP transceiver modules, before removing the dust plugs and making any optical connections, observe the following guidelines:

•Always keep the protective dust plugs on the unplugged fiber-optic cable connectors and the transceiver optical bores until you are ready to make a connection.

•Always inspect and clean the LC connector end-faces just before making any connections. See the Tip on this page for a pointer to a fiber-optic inspection and cleaning white paper.

•Always grasp the LC connector housing to plug or unplug a fiber-optic cable.

Step 9 Remove the dust plugs from the network interface cable LC connectors. Save the dust plugs for future use.

Step 10 Inspect and clean the LC connector's fiber-optic end-faces. See the following Tip for a pointer to a fiber-optic inspection and cleaning white paper.

Tip For complete information on inspecting and cleaning fiber-optic connections, see the white-paper document at this URL:

http://www.cisco.com/en/US/tech/tk482/tk876/technologies_white_paper09186a0080254eba.shtml

Step 11 Remove the dust plugs from the SFP transceiver module optical bores.

Step 12 Immediately attach the network interface cable LC connector to the SFP transceiver module.

Step 13 To connect 1000BASE-T SFP transceiver modules to a copper network, follow these substeps:

Caution To comply with GR-1089 intrabuilding lightning immunity requirements, you must use grounded, shielded, twisted-pair Category 5 cabling.

a. Insert the Category 5 network cable RJ-45 connector into the SFP transceiver module RJ-45 connector.

Note When connecting to a 1000BASE-T-compatible server, workstation, or router, use four twisted-pair, straight-through Category 5 cabling for the SFP transceiver module port. When connecting to a 1000BASE-T-compatible switch or repeater, use four twisted-pair, crossover Category 5 cabling.

b. Insert the other end of the network cable into an RJ-45 connector on a 1000BASE-T-compatible target device.

Step 14 Observe the port status LED:

•The LED turns green when the SFP transceiver module and the target device have an established link.

•The LED turns amber while the STP feature discovers the network topology and searches for loops. This process takes about 30 seconds, and then the LED turns green.

•If the LED is off, the target device might not be turned on, there might be a cable problem, or there might be a problem with the adapter installed in the target device. See the Troubleshooting section of your switch hardware guide for solutions to cabling problems.

Step 15 Reconfigure and reboot the target device if necessary.

Customers interested in purchasing Cisco SFP or the price, please refer to below links:

SFP-10G-LR

GLC-SX-MMD

GLC-LH-SM

WS-X4712-SFP+E module can't put into an R-E chassis ?

Does anyone know why is not possible to put a WS-X4712-SFP+E - module into an R-E chassis?

The module has the same connection to backplane as the WS-X4748-UPOE+E

and this one works in a R-E chassis.

I know the restriction of Cisco that the 4712 is only supported in 4503-E, 4506-E,

4507+E and 4510+E, WS-X4448-GB-SFP, but why?

Are there hardware-restrictions, is the backplane different?

The solution:

The reason is the chassis itself.

The 4712 has a 48 gigabits per-slot capacity. You need the Sup 7E on the R+E chassis to achieve the 48Gbps per slot in order to get a 2.5:1 over-suscription rate.

On the R-E chassis, the 7E defaults to 24Gbps per slot, and the over-subscription ratio increases to 5:1 which was considered unacceptable. Hence we have disabled the working of the 4712 on R-E chassis. It is a chassis limitation.

Compatibility of GLC-SX-MM and GLC-SX-MMD

If I connect a GLC-SX-MM at one end and GLC-SX-MMD at the other end, will the link come up.The difference between the modules is that one supports Digital Optical Monitoring and other does not.

The solution:

As long as you are using the correct patch cable (MM) and your backbone is also MM, then yes.  The GLC-SX-MMD and GLC-SX-MM are compatible.

Cisco GLC-SX-MM is compatible with the IEEE 802.3z 1000BASE-SX standard, operates on legacy 50 μm multimode fiber links up to 550 m and on 62.5 μm Fiber Distributed Data Interface (FDDI)-grade multimode fibers up to 220 m. It can support up to 1km over laser-optimized 50 μm multimode fiber cable.

Cisco GLC-SX-MMD is compatible with the IEEE 802.3z 1000BASE-SX standard, operates on legacy 50 μm multimode fiber links up to 550 m and on 62.5 μm Fiber Distributed Data Interface (FDDI)-grade multimode fibers up to 220 m. It can support up to 1km over laser-optimized 50 μm multimode fiber cable.

WS-X4648-RJ45-E Installation -- Support and Restrictions

WS-X4648-RJ45-E: 48-port, 10/100/1000 Ethernet module

WS-X4648-RJ45-EInstallation –Support and Restrictions

• Supported on by the Supervisor Engine 6-E,

Supervisor Engine 6L-E, and the Supervisor Engine 7-E

• Supported only in the Catalyst 4503-E,  Catalyst 4506-E, Catalyst 4507R+E, and Catalyst 4510R+E switch chassis.

• Can be installed in any non-supervisor engine slot.

WS-X4648-RJ45-E Minimum and Maximum Port Density:

• Catalyst 4503—48/96

• Catalyst 4506-E, Catalyst 4507R+E—48/240

• Catalyst 4510R+E—48/384

• You need a Supervisor Engine 7-E to support more than 240 ports on the Catalyst 4510R-E and Catalyst 4510R+E switch chassis

The similar cisco module WS-X6748-SFP you maybe interested, please CLICK HERE.

Where to buy Cisco GLC-SX-MMD

GLC-SX-MMD, the replacement of GLC-SX-MM, 1000BASE-SX SFP transceiver module, MMF, 850nm, DOM.

The Cisco list price for GLC-SX-MMD is 500 USD, there are many suppliers for this, according to our research on GLC-SX-MMD Price, best price is from, http://www.3anetwork.com/cisco-glc-sx-mmd-price_p1022.html, 145 USD, you save: US$355.00 (71% off), but they are based in Hong Kong, so may take 3 days to reach your country, some other sources for your reference:

1, distributors, like Ingram Micro, Comstor, Tech Data, Redington etc, different countries different distributors, also different price related to your region, partner level and project level, normally around 30%~60% off GPL;

2, http://www.cdw.com/shop/products/Cisco-SFP-mini-GBIC-transceiver-module/2542675.aspx , 368.99 USD, professional and authorized Cisco online supplier, but the price is high, also are not so flexible in cross country sellings.

3, www.router-switch.com/glc-sx-mmd-p-4958.html+&cd=14&hl=en&ct=clnk&gl=us,  160 USD, price a bit high, Hong Kong based, however, their website can not be opened in China, these guys are ranking quite good on google.com, but why their website is not available to their own country customers, interesting.

4, http://www.amazon.com/Cisco-1000BASE-SX-Interface-Converter-GLC-SX-MMD/dp/B008J55IEG, 36.99 USD, good price but frankly speaking Amazon is not professional in Cisco products at all, as can see from their description, also the list price 2995 USD is not correct, if you are located in US, maybe you can try, otherwise better find a professional networking supplier.

5 http://www.networkhardware.com/Cisco/OpticalTransceivers/SFP/GLC-SX-MMD no price on their web, you may send Email to check with them, I think their advantage is they have a big stock for used products.