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  • 1.  LR SFP's not working on EX Series

    Posted 03-14-2024 09:52

    Hi, We have a 1gig direct connection termination on Cienna device. ISP installed a 10gig LR SFP on Cienna and we are using single mode fiber to connect it to Juniper EX4400-24T series switch. I tried to match SFP on Juniper side and link doesn't come up.

    With 10gig LR SFP on Juniper, there is not even LED light coming from SFP when inserted into port (This answers my first question). If I switch that LR with SFP+-10G-USR, I see LED coming from SFP but i can't have LR on Cienna and SR on Juniper. 

    Are there any compatibility issues with LR's and Juniper EX series switches?

    Also, receive power seems odd but i think i should worry about that later once i figure out Juniper working with SR and not LR.

    Physical interface: xe-1/2/3
        Laser bias current                        :  4.746 mA
        Laser output power                        :  0.4250 mW / -3.72 dBm
        Module temperature                        :  42 degrees C / 108 degrees F
        Module voltage                            :  3.2670 V
        Laser receiver power                      :  0.0001 mW / -40.00 dBm


  • 2.  RE: LR SFP's not working on EX Series

    Posted 03-22-2024 17:10

    You may need to cross the transmit and recieve at one end of you fiber cable linking the switch to the device.  In our new installs of 10gig fiber and optics, we had to do that for the links to come up.