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  • 1.  LR SFP's not working

    Posted 03-14-2024 09:52

    We have 1gig Direct connect link terminated on Cienna device and ISP installed a 10gig LR SFP on it. I'm trying to match it on Juniper EX4400-24T switch but interface is not coming up on XE interface.

    With LR SFP I don't even see any LED light coming from SFP connected to Juniper (This makes sense why my first statement is not working). If I insert SFP+-10G-USR  I see light coming from SFP on juniper.  Is there anything to do with LR SFP's and Juniper EX model?

    Physical interface: xe-1/2/3
        Laser bias current                        :  4.830 mA
        Laser output power                        :  0.4250 mW / -3.72 dBm
        Module temperature                        :  45 degrees C / 113 degrees F
        Module voltage                            :  3.2670 V
        Laser receiver power                      :  0.0001 mW / -40.00 dBm

    Thanks,



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