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11 Nov 2015

Existing and emerging network technologies are driving the need for optical transceivers which support increased data rates in the data center. With the emergence of 1000BASE-LX specification, 1000BASE-LX/LH SFP transceiver module is widely used in optical network systems. Here are the most frequently asked questions we might have when using Cisco 1000BASE-LX/LH SFP (GLC-LH-SM or GLC-LH-SMD) transceivers.

1. Can 1000BASE-LX be compatible with 100BASE-LX?

1000BASE-LX and 100BASE-LX are very different standards. 1000BASE-LX SFP (GLC-LH-SMD) and 100BASE-LX SFP (GLC-FE-100LX) are two module types, one for GE and one for FE slots. The GLC-LH-SMD does not operate at 100Mbps. You will need to use a 100Mb module to connect to another...