Question about SFP choise

[CKoTuHKa666]

Good day. Sorry for bad English :) Please advise me in hardware choice. I have a switch cisco-3560x-24p. I need to choose a 1Gb SFP to connect my cisco with dlink 3120-24 (with SFP module DEM-310gt). Dlink's SFP module operates with 1310 nm both Tx and Rx. But cisco SFP modules, that recommended for 3560x, works at 1310Tx/1490Rx and 1490Rx/1310Tx. Thank you for help.

[Dragan Ilic]

I suggest you 1000BASE-LX/LH in multimode fiber option. It works on 1310nm...you are reffering to wrong SFPs in your post for Cisco switch.

BR,
Dragan

[CKoTuHKa666]

Thank you for answer. Unfortunately we cannot use multimode fiber. What you mean "you are reffering to wrong SFPs in your post for Cisco switch"? I have choosed an SFP module via this page: http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3750x_3560x/hardware/installation/guide/3750x_3560x_HIG/HIGOVERV.html#wp1238002

[Dragan Ilic]

There is LH option for same SFP in SM option so go with that one GLC-LH-SM=...I was meaning that you are refering to SFPs that are used for transmision using only one optical wire - one wavelength for transmit and other for receiving. That way you are having cost reduction...link which you provided is totally fine.

HTH,

Dragan

[CKoTuHKa666]

Thank you very much for help. My previous link did not contained such info about GLC-LH-SM= :) Another link http://www.cisco.com/c/en/us/td/docs/interfaces_modules/transceiver_modules/compatibility/matrix/OL_6981.html ; has more info about this module. So finally I can take GLC-LH-SM= and it must work with DEM-310GT ? Correct? :)

[Dragan Ilic]

It should work...I checked dlink sfp also and both are based on 802.3z standard. Also dlink support both - MM and SM. But you are going to work with SM so it's OK.

BR,

Dragan