Tag Archives: Cisco SFP+

GLC-T vs GLC-TE vs SFP-GE-T: Which One to Choose?


GLC-T, GLC-TE and SFP-GE-T are three Cisco 1000BASE-T SFP types. All these three models SFPs can operate on standard Category 5 unshielded twisted-pair copper cabling of link lengths up to 100 m (328 ft) and support 10/100/1000 auto negotiation and Auto MDI/MDIX. So, what’s the difference between them? In this article, comparison between Cisco GLC-T, GLC-TE and SFP-GE-T will be provided.

GLC-T vs GLC-TE vs SFP-GE-T on Cisco switch

Specifications for GLC-T, GLC-TE and SFP-GE-T

By access to Cisco’s relative information, specifications for Cisco GLC-T, GLC-TE and SFP-GE-T are concluded in the table below:

SFP Models Description Operating Temperature Range
Cisco GLC-T 1000BASE-T SFP Copper RJ-45 100m Transceiver COM
Cisco GLC-TE 1000BASE-T SFP Copper RJ-45 100m Transceiver EXT
Cisco SFP-GE-T 1000BASE-T SFP Copper RJ-45 100m Transceiver NEBS 3 ESD EXT

From the table above, we can see that the difference between GLC-T and GLC-TE is the operating temperature range. Operating temperature range for GLC-T and GLC-TE is respectively commercial temperature range (COM) and Extended temperature range (EXT). The difference between SFP-GE-T and GLC-TE is that the SFP-GE-T has the function of NEBS 3 ESD. Then what does that mean? Let’s read the following passages.

Explanation for SFP Operating Temperature Range: COM, EXT and IND

Operating temperature range:

  • Commercial temperature range (COM): 0 to 70°C (32 to 158°F)
  • Extended temperature range (EXT): -5 to 85°C (23 to 185°F)
  • Industrial temperature range (IND): -40 to 85°C (-40 to 185°F)
  • Storage temperature range: -40 to 85°C (-40 to 185°F)
What Does NEBS 3 ESD Mean?  

NEBS is short for Network Equipment Building System and is a set of standards for building networking equipment which can withstand a variety of environmental stresses. NEBS has three levels: Level 1, Level 2, and Level 3. Level 1 refers to cases where minimum compatibility with the environment is needed. Level 2 applies for limited operability of the product. Finally, NEBS Level 3 (NEBS 3 ESD) certification guarantees the maximum operability of the equipment. It also certifies that the equipment will perform well in harsh environmental conditions and will not interfere with other electronic devices around. NEBS Level 3 certified networking equipment is vital in mission-critical applications. SFP-GE-T with 1000BASE-T NEBS 3 ESD, that is to say, compared to GLC-T or GLC-TE it can take greater stresses with less likelihood of failure, and are therefore a bit more trustworthy in truly mission-critical applications.

Which One Should I Use: GLC-T, GLC-TE and SFP-GE-T

In terms of Cisco original GLC-T, GLC-TE and SFP-GE-T transceivers, GLC-T and SFP-GE-T will be End-of-Sale in June 1, 2017 and replaced by the GLC-TE. So then you can only buy GLC-TE transceivers from Cisco. If you’re dealing directly with a company like a telecom who specifically requires NEBS compliance, they’ll let you know and you should choose SFP-GE-T. But for the most of the networks, GLC-T and GLC-TE transceivers are all you’d need for Gigabit Ethernet, and they cost less as well. Fiberstore (FS.COM) provides all these three SFP modules. We are manufactured to the exact same standards as Cisco’s own brand, and come with true lifetime warranties. Every SFP module in Fiberstore was tested to ensure 100% compatibility, but only cost a small fraction of name-brand alternatives.

Related Article: Compatible SFP for Cisco 2960 Series Switches

Related Article: A Quick Overview of Cisco 1000BASE-T GLC-T SFP Copper Module

Full CWDM Mux Demux and CWDM SFP Transceivers Solutions

CWDM systems have channels at wavelengths spaced 20 nanometers (nm) apart, compared with 0.4 nm spacing for DWDM. This allows the use of low-cost, uncooled lasers for CWDM. In a typical CWDM system, laser emissions occur on full eighteen channels at eighteen defined wavelengths: 1610 nm, 1590 nm, 1570 nm, 1550 nm, 1530 nm, 1510 nm, 1490 nm, 1470 nm, 1450 nm, 1430 nm, 1410 nm, 1390 nm, 1370 nm, 1350 nm, 1330 nm, 1310 nm, 1290 nm, 1270 nm. Besides, for CWDM systems an industry standard color coding scheme is used. The latches of the CWDM SFP transceivers match the colored port indicators on the passive units therefore guaranteeing simple setup. Following color codes and wavelength are valid for CWDM.


Full CWDM Channels (18 Channels) Mux Demux Solution

The WDM system uses a multiplexer at the transmitter to combine several wavelengths together, each one carry different signal with bite-rate up to 10G and a demultiplexer at the receiver to split them apart. Both mux and demux are passive, requiring no power supply. The 18 Channels CWDM mux demux covers all channels of 1270nm to 1610nm in 20nm increments. Without replacing any infrastructure, it totally support data rates up to 180 Gbps by being completely protocol transparent. The main fields of applications are the use in SDH (STM-1, STM-4, STM-16, STM- 64), IP (Fast Ethernet, Gigabit Ethernet, 10 Gigabit) ATM and storage (1G, 2G, 4G, 8G, 10G Fibre Channel) networks. Connectors, located on the front of the CWDM mux demux modules, are labeled and use the same color-coding that is used to indicate the wavelength of the individual CWDM SFP transceivers (shown in the figure below).


When fiber availability is limited, CWDM mux demux could increase the bandwidth on the existing fiber infrastructure. By using 18ch CWDM mux demux mentioned above and the CWDM SFP transceivers, up to 180 Gbps could be supported on a fiber pair.


Full CWDM SFP Transceivers Solution

CWDM SFP transceiver is based on the SFP form factor which is a MSA standard build. The max speed of this product is 1.25G and they are also available as 2.5G and of course the popular CWDM 10G SFP transceivers. The CWDM SFP transceiver has a specific laser which emits a “color” defined in the CWDM ITU grid. The CWDM ITU grid is defined from 1270 to 1610nm and has steps of 20nm. So the available wavelength is 1270nm, 1290nm, 1310nm, 1330nm, 1350nm, 1370nm, 1390nm, 1410nm, 1430nm, 1450nm, 1470nm, 1490nm, 1510nm, 1530nm, 1550nm, 1570nm, 1590nm and C. Besides, our CWDM SFP transceivers are similarly color-coded as the CWDM mux demux to help you match the right link connection (shown in the figure below).


We can make the CWDM SFP transceivers compatible with every brand (Cisco, HP, H3C, Juniper, Huawei, Brocade, Arista). A lot of brands have vendor locking and only with the proper coding. Fiberstore is specialized in this rebranding or recoding. We have many different switches and routers in our test lab to test the coding. We also use different Optical Spectrum Analyzers to ensure the CWDM SFP transceiver is emitting the right color and has the correct power budget. The CWDM SFP transceiver is used in combination with passive CWDM mux demux, and we can provide you a complete solution and advice on which equipment fits best in your project. Please give us your project details and we will provide the most efficient and economical solution.

1270nm SFP 1290nm SFP 1310nm SFP 1330nm SFP 1350nm SFP 1370nm SFP
1390nm SFP 1410nm SFP 1430nm SFP 1450nm SFP 1470nm SFP 1490nm SFP
1510nm SFP 1530nm SFP 1550nm SFP 1570nm SFP 1590nm SFP 1610nm SFP

How to Choose SFP+ Transceivers for Cisco 4500 Series Switch

The Cisco 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 network switch, we may use some transceiver modules. In this article, some SFP+ transceivers that supported for Cisco 4500 series switches will be introduced.

Cisco 4500 Series Switch Overview
Cisco 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.

cisco 4500

Supervisor Engine for Cisco 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 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

Related Article: Cisco SFP-10G-SR: All You Need to Know

Great Compatible Cisco SFP+ Transceiver Modules

transceiver moduleThe enhanced small form-factor pluggable (SFP+) is an enhanced version of the SFP that supports data rates up to 16 Gbit/s. Since SFP+ is mostly used for 10G, we usually call it 10G SFP. It is a popular industry format supported by many network component vendors. In terms of the SFP+ transceivers, there are various major brands, such as Cisco, HP, Juniper etc. In the current market, the Cisco SFP+ transceivers are very popular with the customers, especially the Cisco SFP-10G-SR and SFP-10G-LR. However, these original transceiver modules are really expensive. To save cost, we usually use 3rd-party transceiver modules instead of the original brand. In this text, two kinds of compatible SFP+ modules that can severally replace the Cisco SFP-10G-SR and SFP-10G-LR will be introduced. These two kinds of compatible modules are all from the Fiberstore, the leading manufacturer and supplier of optical transceiver modules in China.

SFP+ is the Most Popular 10G Transceiver Module

Since there are many different 10GbE physical layer standards, many interfaces consist of a standard socket into which different PHY modules may be plugged. On the market, the common 10G transceiver modules are XENPAK, XPAK, X2, XFP and SFP+. XENPAK was the first MSA for 10GbE and had the largest form factor. X2 and XPAK were later competing standards with smaller form factors. XFP came after X2 and XPAK and it is also smaller. The newest module standard is SFP+. In comparison to earlier XENPAK or XFP modules, SFP+ modules leave more circuitry to be implemented on the host board instead of inside the module. Now SFP+ has become the most popular socket on 10GbE systems.

Common 10GbE Standards for SFP+

10 Gigabit Ethernet is a group of computer networking technologies for transmitting Ethernet frames at a rate of 10 gigabits per second. It was first defined by the IEEE 802.3ae-2002 standard. Some common 10GbE standards for SFP+ are shown in the table below:

Standards for SFP+

Two Kinds of Compatible Cisco SFP+ Transceiver from Fiberstore

For 3rd-party transceiver modules are much cheaper than the original brand (Cisco. HP, etc), they are become more and more popular in the market. As a result, suppliers to offer these effective modules are also become more than before. But in my opinion, the Fiberstore does the best among them. They provide all kinds of compatible transceivers, especially the SFP-10G85-3M-CO and SFP-10G31-10-CO, which can entirely replace the Cisco SFP-10G-SR and SFP-10G-LR.

  • SFP-10G85-3M-CO

    The SFP-10G85-3M-CO series multi-mode transceiver is a SFP+ module for duplex optical data communications such as 10GBASE-SR and 10GBASE-SW. This transceiver offers the same function with Cisco SFP-10G-SR and is fully compatible with Cisco devices. It is a hot-swappable input/output device, which means no need to power down if installing or replacing. Its transmission distance can up to 300m with duplex LC multi-mode Fiber cable.

  • SFP-10G31-10-CO

    The SFP-10G31-10-CO single mode transceiver is a small form factor pluggable module for serial optical data communications such as IEEE 802.3ae 10GBASE-LR/LW. This transceiver offers the same function with Cisco SFP-10G-LR and is fully compatible with Cisco devices. This module is designed for single mode fiber and operates at a nominal wavelength of 1310 nm. Its transmission distance can up to 10km with duplex LC single-mode fiber.

Cisco SFP+ Transceiver

All these products offered by Fiberstore are tested in-house prior to shipping to ensure that they will arrive in perfect physical and working condition. Fiberstore can guarantee these 10G SFP+ transceivers to work in your system and all of their 10G SFP+ transceivers come with a lifetime advance replacement warranty. Now they have many SFP-10G85-3M-CO and SFP-10G31-10-CO transceiver modules in stock. Therefore, Same-Day Delivery is available. If you want to know more about their products or services, please feel free to contact them at sales@fs.com.

Related Article: Cisco SFP-10G-SR: All You Need to Know

Cisco SFP Transceiver Modules for Opitcal Network

Cisco Systems, Inc. is an American multinational corporation headquartered in San Jose, California, that designs, manufactures, and sells networking equipment. With the rapid development of optical communication, Cisco’s products of optical networking are being used more and more widely all around the world. Among them, the SFP transceiver module is a critical component. In this article, Cisco SFP will be introduced.

Cisco Products Refer To Optical Communication

In fact, Cisco produces many optical networking equipment, such as optical services modules, optical transponders, optical transceiver modules and a comprehensive portfolio of WDM transmission modules, which includes optical terminal filters, optical amplifiers, optical service channel, and others, to support the network applications of enterprise and service provider customers.

Cisco SFP Transceiver Modules

Cisco SFP transceiver modules support Ethernet, Sonet/SDH and Fibre Channel applications across all Cisco switching and routing platforms. The Cisco portfolio of hot pluggable interfaces offers a rich set of choices in terms of speeds, protocols, reaches and supported transmission media. Generally, these SFP transceiver modules are divided into three types as following three sorts:

Cisco Fast Ethernet SFP Modules:

  Cisco 100M Ethernet SFP   Part Number Description
Cisco 100BASE-FX SFP GLC-FE-100FX  Operates on ordinary multimode fiber-optic (MMF) link spans up to 2 kilometers long. For 100Mbps Ethernet ports.
GLC-GE-100FX  Operates on ordinary multimode fiber-optic (MMF) link spans up to 2 kilometers long. For Gigabit Ethernet ports.
Cisco 100BASE-LX10 SFP GLC-FE-100LX  Operates on ordinary single-mode fiber-optic (SMF) link spans up to 10 kilometers long.
Cisco 100BASE-ZX SFP GLC-FE-100LX-RGD  Operates on ordinary single-mode fiber-optic (SMF) link spans up to 10 kilometers long.
Cisco 100BASE-BX10 SFP GLC-FE-100BX-D GLC-FE-100BX-U  Operates on ordinary SMF single-strand link spans up to 10 kilometers long.
Cisco 100BASE-EX SFP GLC-FE-100EX  Operates on ordinary single-mode fiber-optic (SMF) link spans up to 40 kilometers long.
Cisco 100BASE-ZX SFP GLC-FE-100ZX  Operates on ordinary single-mode fiber-optic (SMF) link spans up to 80 kilometers long.

Cisco Gigabit Ethernet SFP Modules

Gigabit Ethernet SFP Part Number Description
Cisco 1000BASE-SX SFP GLC-SX- MM Operates on 50m multimode fiber links up to 550m and on 62.5 m FDDI-grade multimode fibers up to 220m.
Cisco 1000BASE-LX/LH SFP GLC-LH-SM Operates on standard single-mode fiber-optic link spans of up to 10 km and up to 550 m on any multimode fibers.
Cisco 1000BASE-ZX SFP GLC-ZX-SM Operates on standard single-mode fiber-optic link spans of up to approximately 70 km in length.
Cisco 1000BASE-BX10-D & 1000BASE-BX10-U SFP GLC-BX-D
Operates on a single strand of standard single-mode fiber. A 1000BASE-BX10-D device is always connected to a 1000BASE-BX10-U device with a single strand of standard single-mode fiber with an operating transmission range up to 10 km.
Cisco 1000BASE-T SFP GLC-T SFP-GE-T 1000BASE-T SFP Transceiver Module for Category 5 copper wire.

Cisco CWDM Transceiver Modules

 Part Number Description Color Code
CWDM-SFP-1470 Cisco CWDM 1470-nm SFP; Gigabit Ethernet and 1 and 2 Gb Fibre Channel Gray
CWDM-SFP-1490 Cisco CWDM 1490-nm SFP; Gigabit Ethernet and 1 and 2 Gb Fibre Channel Violet
CWDM-SFP-1510 Cisco CWDM 1510-nm SFP; Gigabit Ethernet and 1 and 2 Gb Fibre Channel Blue
CWDM-SFP-1530 Cisco CWDM 1530-nm SFP; Gigabit Ethernet and 1 and 2 Gb Fibre Channel Green
CWDM-SFP-1550 Cisco CWDM 1550-nm SFP; Gigabit Ethernet and 1 and 2 Gb Fibre Channel Yellow
CWDM-SFP-1570 Cisco CWDM 1570-nm SFP; Gigabit Ethernet and 1 and 2 Gb Fibre Channel Orange
CWDM-SFP-1590 Cisco CWDM 1590-nm SFP; Gigabit Ethernet and 1 and 2 Gb Fibre Channel Red
CWDM-SFP-1610 Cisco CWDM 1610-nm SFP; Gigabit Ethernet and 1 and 2 Gb Fibre Channel Brown
This picture shows the Third Party 1000BASE-T SFP Transceiver from Fiberstore
cisco sfp

The Fiberstore industry-standard 1000BASE-T Small Form-factor Pluggable (GLC-T SFP) gigabit interface converter (GBIC) is a hot-swappable input/output device that plugs into a Gigabit Ethernet port or slot, linking the port with the network. The SFP modules from Fiberstore provide full-duplex Gigabit Ethernet connectivity to high-end workstations and between wiring closets over existing copper network infrastructure.

Main Featurs

  • Hot-swappable when deployed, the switch or router does not have to reboot
  • Interchangeable with other 1000BASE-X SFPs on the same linecard
  • Supports Cisco quality ID feature that enables the switch or router to identify whether the SFP is a Cisco SFP

Technical Specifications

  • Platform Support
    The Cisco 1000BASE-T SFP is supported across a variety Cisco switches, routers, and optical transport devices.
  • Connectors and Cabling
    RJ-45 connector
    Cable: Category 5 unshielded twisted pair (UTP)
    Cabling distance (maximum): 328 ft (100 m)
  • Dimensions
    Maximum Dimensions (H x W x D): 0.55 x 0.54 x 2.8 in. (14.0 x 13.7 x 71.1 mm)

Environmental Conditions and Power Requirements

  • Operating temperature range: 0 to 70° C (32 to 158° F)
  • Storage temperature range: -40 to 85° C (-40 to 185° F)
  • Predicted mean time between failure (MTBF): 1 million hours

Cisco SFP and SFP+ Transceiver Modules Installation Guide

Cisco is one of the worldwide major fiber optic network equipments provider, the networking engineers may time and again facing the problems of install fiber optic transceivers to other Cisco devices for optical signal transmission. This article provides the installation instructions for Cisco small-factor pluggable (SFP) and SFP+ transceiver modules. These modules are hot-swappable input/output (I/O) devices that plug into 100Base, 1000Base and 10Gbase ports, to connect the module ports with the fiber optic or copper network.

Cisco SFP+ transceiver modules installation is the combination of Cisco original SFP+ or compatible Cisco SFP+ transceiver modules with your Cisco devices. Each port must match the wavelength specifications on the other end of the cable and that the cable must not exceed the stipulated cable length for reliable communications. Using only Cisco or compatible Cisco SFP+ transceiver modules on your own Cisco devices, as it allows a Cisco switch or router to identify and validate that the transceiver modules is certified and tested by Cisco.

Cisco SFP transceiver module product number and description at Compatible cisco SFP transceiver:
Cisco SFP+ transceiver module product number and description at Compatible cisco SFP+ transceiver

Take SFP module for example, let’s discuss the installation guid and note.
To begin the installation, tools you need is listed below:
Wrist strap or other personal grounding device to prevent ESO occurrences
Antistatic mat or antistatic foam to set the transceiver on
Fiber optic end-face cleaning tools and inspection equipment.

SFP transceiver module have three types of latching devices to secure an SFP transceiver module in a port socket: mylar tab latch, actuator button latch, bail clasp latch. Knowing which type of latch your SFP transceiver module uses is crucial before the installation.

Disconnect all fiber optic cables before the installation
Attache an ESD-preventive wrist strap to your wrist and to the ESD ground connector or a bare metal surface on your chassis.
Removing the SFP transceiver module from its protective packaging.
Check the label on the SFP transceiver module body to verify that you have the correct model for your network.
Find the send (TX) and receive (RX) markings that identify the top side of the SFP transceiver module.
Position the SFP transceiver module in front of the socket opening. 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.
Insert the SFP module into the socket until you feel the connector latch into place.
Press the SFP into the slot firmly with your thumb to ensure that the transceiver is properly latched in the socket.

After the installation steps above, the verification is needed. Grasp the SFP and try to remove it without releasing the latch. If the SFP can not be removed, it is installed and seated properly. If the SFP can be removed, you need to re-insert it and press harder with our thumb, repeat it until it is latched securely into the socket.