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How to connect Cisco 3550 and 3750 with fiber?

What SFP module would you use to connect a 3750 switch to a 3550 that is using a WS-G5486 Gigabit module?   Does anyone have experience with SX to LX adapters and if they are reliable?
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Craig Beck
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Looks like GLC-LH-SM is the SFP for your application.
@don - GLC-LH-SM is EoS now - the replacement is the GLC-LH-SMD variant.  It's essentially the same thing but with DOM capability.
Roger that.  Thanks.
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Got some compatible ones and they worked great!   Thanks for the info.