Question about Cisco (GLC-LH-SM=) (glclhsmrf) Transceiver

2 Answers

GLC-LH-SM with a Catalyst 2960 switch

When I put in the transceiver module, and connect it it doesn't show any 'light' and it won't make the connection. distance is 200m+ on a MM 62,5 fiber which works perfectly with the existing 3COM switches & SFP's.

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  • wremes May 09, 2008

    thanks !

  • rsee215 Aug 28, 2008

    what other settings are needed for Single Mode to get it light? did no shut, switchport trunk allow all, switchport mode trunk



    thanks,

    Rich

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After doing a no shut on it, if it doesnt light still you may have to play around with negotiation, post if it still doesnt light.


ZXR

Posted on Aug 05, 2008

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Cisco disables the trans port as default, have you enabled it in the system?

Posted on May 09, 2008

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2 Answers

What is the difference between GLC-LH-SM and GLC-LH-SMD?


They are 1000BASE-LX/LH SFP for Both Multimode and Single-Mode Fibers, compatible with the IEEE 802.3z 1000BASE-LX standard, operates on standard single-mode fiber-optic link spans of up to 10 km and up to 550 m on any multimode fibers.

If one switch supports Cisco SFP GLC-LH-SM, then it can also support Cisco SFP GLC-LH-SMD.

The difference between GLC-LH-SM and SFP GLC-LH-SMD is the letter "D".

What does "D" mean?
"D" of GLC-LH-SMD transceiver has additional support for Digital Optical Monitoring (DOM) capability.

What is Digital Optical Monitoring(DOM)?
This feature gives the end user the ability to monitor real-time parameters of the SFP, such as optical output power, optical input power, temperature, laser bias current, and transceiver supply voltage.

The comparison between GLC-LH-SMD and GLC-LH-SM.
glc-lh-smd-vs-glc-lh-sm-21uwyhjmqm5jti35bnosyagr-1-2.png

Related Source:
https://supportforums.cisco.com/document/75181/digital-optical-monitoring-dom
GLC LH SMD Overview
GLC LH SM LC Overview

Aug 18, 2017 | The Computers & Internet

2 Answers

Question about the compatibility of GLC-SX-MM with GLC-SX-MMD.


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.

Apr 23, 2015 | Cisco GLC-SX-MM= 4 in 1 GE SFP, LC...

1 Answer

Cisco Module that transmit up to 40KM?


You can choose the transceiver SFP-10G-ER or GLC-EX-SMD, these two all can transmit up to 40KM. and more than 75% OFF at 3Anetwork.com for Cisco optic transceiver.

Mar 06, 2015 | Cisco Computers & Internet

1 Answer

We are terminating a 24 OFC in a Cisco 2950 g switch using GLC-LH-SM transceiver,Physical connectivity everything correct for both end.Same We checked & Confirmed with Media Converter, Link cames Up,...


Dear,I work for Ingellen Communication Equipment and we are a large fiber optic products manufacturer in Shenzhen.Kindly let me know your specific requirements so that i can help.
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Oct 20, 2010 | Cisco (GLC-LH-SM=) (glclhsmrf) Transceiver

2 Answers

Loose fitting Cisco GLC-LH-SM


When inserting the GBIX - pull the little wire bit/guard down then insert it firmly into the 3750 and then push the wire back up. You will find it sits more snug.

And yes I have had this problem before.

Jun 04, 2009 | Cisco (GLC-LH-SM=) (glclhsmrf) Transceiver

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