07-28-2018 02:35 AM - edited 03-08-2019 03:46 PM
dear team,
in my cisco WS-C3850-24XS switch when i connect the sfp module sfp-10g-sr in both end at that
time the interface shows its connected but the link is not up why?
07-28-2018 03:10 AM
"interface shows its connected" what you mean by connected ?
as per your screenshot the interface down,
Steps :
1. check both SFP are able to detect.
2. check the fibre distance.
3. check the lights in fibre, if you see light in the right connector. ( if not swap the fibre connector)
BB
07-28-2018 04:21 AM
07-28-2018 04:28 AM
07-28-2018 09:37 AM
07-28-2018 11:34 AM
Look at the Fibre as suggested above my post it may be worth trying and see if it fixes the issue.
should be like this :
Light ---------------- (No Light)
SFP SFP
(No Light) ----------------- light
Hope fully we are talking here dark fibre inside campus.
BB
07-28-2018 05:08 PM
@aslulam555 wrote:
Inside the sfp module the red light is blinking
I hope someone has explained or warned about looking into the laser with a naked eye.
07-28-2018 08:11 PM
Hello,
Cisco SFP-10G-SR module
The Cisco 10GBASE-SR Module supports a link length of 26m on standard Fiber Distributed Data Interface (FDDI)-grade Multimode Fiber (MMF). Using 2000MHz*km MMF (OM3), up to 300m link lengths are possible. Using 4700MHz*km MMF (OM4), up to 400m link lengths are possible.
As suggested:
Report your results.
Regards,
07-29-2018 05:35 AM
Hello
Set the port on both sides to autonegotiate the speed/duplex meaning DONT hard code either side, if the mdix is disable use a crossover cable between the two switch's.
res
Paul
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