Tag Archives: GLC-T

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

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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 vs GLC-TE vs 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 vs GLC-TE vs SFP-GE-T

In terms of Cisco original GLC-T vs GLC-TE vs 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

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
GLC-BX-U
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