SRX

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Ask questions and share experiences about the SRX Series, vSRX, and cSRX.

  • 1.  Can XFP work with SFP?

    Posted 01-03-2012 18:42

    Hi all,

     

    On the SRX3K-2XGE-XFP module, can we use the XFP (eg. SRX-XFP-10GE-SR) to work with SFP (eg. SRX-SFP-1GE-SX)?

    Can we put SRX-SFP-1GE-SX onto SRX3K-2XGE-XFP module?


    I believe it's no to both, right?

    I was not able to find any supporting documents on this. 

     

    Pls share.



  • 2.  RE: Can XFP work with SFP?

    Posted 01-04-2012 11:15

    No, and no.

     

    XFP and SFP are two physically different form factors.

     

    10G and 1G are different signalling protocols, so you can't connect the two, either.



  • 3.  RE: Can XFP work with SFP?

    Posted 01-06-2012 05:01

    How about XFP-SR connect to SFP-SX?

     

    If we change the data speed of the XFP-SR to 1000, will this work?



  • 4.  RE: Can XFP work with SFP?

    Posted 01-06-2012 10:24

    No, the XFP is not a multi-speed optic.  It signals at 10Gps, period.



  • 5.  RE: Can XFP work with SFP?

    Posted 01-10-2012 04:34
    So in this situation, XFP and SFP+ are different, right?
    XFP is fixed at 10G speeds, whereas SFP+ is able to 'customize' it's speed?


  • 6.  RE: Can XFP work with SFP?
    Best Answer

    Posted 01-10-2012 13:58
    @michael.saw wrote:
    So in this situation, XFP and SFP+ are different, right?
    XFP is fixed at 10G speeds, whereas SFP+ is able to 'customize' it's speed?

    *ports* yes, *optics* no.

     

    An SFP+ (or SFPP) port can accept (usually) a variety of optics.  That's going to vary by the particular switch.  If the switch accepts 1G and 10G optics in the SFP+ port, then you can put in whatever optics suit your needs.  1G optics are usually labelled as SFP (or mini-GBIC), and 10G are usually SFP+ or SFPP.  If you put a 10G optic in, it will not operate with a 1G optic on the other end of the link.

     

    XFP ports only accept XFP optics, and XFP optics are only 10G.

     

    This is not like copper, where you can have a port that is able to run at multiple speeds (10/100/1000).  With fiber, the optical transcievers are built to pulse light at a fixed frequency, and they do not "scale" down to interoperate with slower speeds.  A 10G optic can only transmit and receive signals at 10G on both ends.  



  • 7.  RE: Can XFP work with SFP?

    Posted 01-17-2016 20:45

    hey hi,

     

    My question is .. i have inserted 10G xfp to SRX3K-2XGE-XFP and have inserted 10G sfp to QFX4300. Connection of both the device is done with fiber cable. so does 10G xfp of SRX supports 10G sfp of QFX..?



  • 8.  RE: Can XFP work with SFP?

    Posted 01-18-2016 03:28 
    My question is .. i have inserted 10G xfp to SRX3K-2XGE-XFP and have inserted 10G sfp
    to QFX4300. Connection of both the device is done with fiber cable. so does 10G xfp of
    SRX supports 10G sfp of QFX..?

    Maybe, the optics also need to match:

     

    Mode: Multimode or Single mode

    Cable: matching optical cable that is multiMode or Single Mode

    wavelength: the nanometer wavelength used

     

    The label on your optic should let you confirm they are the same and compatible.