Optical transceiver

Answered Question
Feb 5th, 2009

Hi,

i have catalyst express 500 switch with transceivers modules GLC-SX-MM, 1000BASE-SX SFP.

Is possible to change the speed of this transceivers to 100Mbit?

... i need it know, because on other side of link is a opical/metallic converter ( AT-MC101XL

Fast Ethernet 100BASE-TX to 100BASE-FX (ST) Multi-Mode Fibre (2km), Stand-Alone Media Converter)

I think converter and tranciever are not compatible. Isn`t it?

Thank.

I have this problem too.
0 votes
Correct Answer by Tom Randstrom about 7 years 10 months ago

Unfortunately, the GLC-SX-MM is not switchable to 100Mb operation. You need to purchase a 100Base-FX SFP module for your switch.

According to the following document, these are the 100Mb interfaces compatible with the Express 500:

GLC-GE-100FX

GLC-FE-100FX

GLC-FE-100LX

GLC-FE-100BX-D

GLC-FE-100BX-U

This document details the interop and specifications of these SFPs:

Cisco Small Form-Factor Pluggable (SFP) Transceiver Modules Maintenance and Troubleshooting

<http://www.cisco.com/en/US/products/hw/modules/ps4999/products_tech_note09186a00807a30d6.shtml#model>

Hope this helps!

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Correct Answer
Tom Randstrom Thu, 02/05/2009 - 07:09

Unfortunately, the GLC-SX-MM is not switchable to 100Mb operation. You need to purchase a 100Base-FX SFP module for your switch.

According to the following document, these are the 100Mb interfaces compatible with the Express 500:

GLC-GE-100FX

GLC-FE-100FX

GLC-FE-100LX

GLC-FE-100BX-D

GLC-FE-100BX-U

This document details the interop and specifications of these SFPs:

Cisco Small Form-Factor Pluggable (SFP) Transceiver Modules Maintenance and Troubleshooting

<http://www.cisco.com/en/US/products/hw/modules/ps4999/products_tech_note09186a00807a30d6.shtml#model>

Hope this helps!

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