SFP Modules

[vaib7av.shirkul]

Hi Experts,

I want to know that what is difference between below both modules ?

1000BASE-LX
30-1299-01 1310nm
S/N:XXXXXX 04-27
Class 1 laser Product  21 CFR (J)

GLC-LH-SM       COM
30-1299-01    LN#50 7/2001
CLASS 1 21CFR 1040.10
MADE IN CHINA
SN:XXXXXX

Thanks,

Vaibhav

[Jon Marshall]

Vaibhav

One is the production description and one is the Cisco part number, see table 5 in this doc -

Cisco SFP Optics

Jon

[Leo Laohoo]

1000BASE-LX

1000BASE-LX/LH SFP for Both Multimode and Single-Mode Fibers

The 1000BASE-LX/LH SFP, 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. When used over legacy multimode fiber type, the transmitter should be coupled through a mode conditioning patch cable. For details on this implementation, refer to http://www.cisco.com/en/US/customer/prod/collateral/modules/ps5455/product_bulletin_c25-530836.html.

GLC-LH-SM

1000BASE-LX/LH long-wavelength/long haul; without  DOM

[jeffjadryev]

Leolaohoo stated the big difference: LX/LH transceivers can run over multi mode fiber (with which Cisco recommends using a mode conditioning patch cable) while LH-SM transceivers can only be used over single mode fiber.

Hope this helps,

Jeff