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EW
New Member

Single Mode Fiber Support for WS-3750 Switches

Hi,

I'm looking for switches that support single mode fiber connections and would like to know if "WS-C3750-FS-S Catalyst 3750 24 100BaseFX + 2 SFP" and "WS-C3750G-12S-S Catalyst 3750 12 SFP" can serve the purpose?

Thanks!

6 REPLIES

Single Mode Fiber Support for WS-3750 Switches

Hi,

The WS-C3750G-12S-S 10/100/1000Mbps Switch suites for your requirement.
Please see the below link for more information.
http://www.wdpi.com/product/used-cisco/switches/3750-series/ws-c3750g-12s-s

Please rate the helpfull posts.
Regards,
Naidu.

EW
New Member

Single Mode Fiber Support for WS-3750 Switches

Thanks Naidu.

Do I need the appropriate SFP modules? Will the "WS-C3750-FS-S Catalyst 3750 24 100BaseFX + 2 SFP" also works with single mode fiber?

Best Regards,

Re: Single Mode Fiber Support for WS-3750 Switches

Both switches Can handle single-mode SFP's.

E.g. GLC-LH-SM

Sent from Cisco Technical Support iPad App

Hall of Fame Super Gold

Single Mode Fiber Support for WS-3750 Switches

Do you really want to get those models?  The 3750 and 3750G are end-of-sale.  Your next step is to get the 3750X.

EW
New Member

Single Mode Fiber Support for WS-3750 Switches

Thanks Jorgensen, Leo,

Is WS-C3750X-12S-S a viable alternative for the 3750 & 3750G models mentioned above?

Can the 1000Base SFP module work with 100Base network device?

Best Regards

Hall of Fame Super Gold

Re: Single Mode Fiber Support for WS-3750 Switches

Is WS-C3750X-12S-S a viable alternative for the 3750 & 3750G models mentioned above?

The 3750 and 3750G has been superseded by the newer model, the 3750X.  One of the main reason why the haste to promote the EoS of the 3750 and the 3750G is the "universal" IOS.

Can the 1000Base SFP module work with 100Base network device?

Check out the two links below:

Cisco 100BASE-FX SFP Fast Ethernet Interface Converter on Gigabit SFP Ports

Cisco Catalyst 3750-X and 3560-X Series Switches Data Sheet

Look under Table 12:

100BASE-FX, 1000BASE-SX, -LX/LH, -ZX, -BX10, DWDM and CWDM SFP Transceivers: LC fiber connectors (single-mode or multimode fiber).

Basically, the 1Gbps SFP will operate in 1Gbps only and won't negotiate to anything lower than that.  If you need 100BaseFx then you need to look at the 100BaseFX SFP.

Thanks for the ratings.

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