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Solved
Unable to set SFP+ Port to Auto Negotiate
We have multiple MS4300-28G switches and on 3 of them we are unable to set port 1/0/27 SFP+ to Auto Negotiate, We have a 10G SFP+ module connected and we need to be able to connect this to a 10G ...
Thank you for all your help but I have found the solution to my issue
It seems that we have SFP+ modules from FS.com that are different revision numbers.
As such the Revision A modules are compatible with 10G-SR/1000SX thus when we plug in a 1GB media converter when the switch port is set to 10G it drops down to 1G and then allows us to plug in our test unit at 10G and the link is then at 10G. and the modules that don't have a revision or are labeled as revision B do not work in the same way
Im assuming that it is mainly due to the 1000SX compatibility.
Thank you
What kind of SFP+ module is plugged? While an SFP+ RJ45 module allows to auto-adopt on different link speeds, there is no such feature available in the industry doing link speed negotiation on fiber ports and fiber links.
Sorry just to clarify we are not using RJ45 modules, just Fiber.
What schumaku said... most 10G optic modules will only operate at 10 gig link speeds, so the ports cant be set to auto while they're installed. I'm pretty sure though if the user will replace with a 1G module, that the port will auto-switch to the 1 gig link speed when it's inserted.
If that's not what you're planning/hoping to do, can you elaborate? Is it the _other_ end that you plan on switching?
While an SFP+ RJ45 module allows to auto-adopt on different link speeds, there is no such feature available in the industry doing link speed negotiation on fiber ports and fiber links. Random side effect on your modules?
Thank you for all your help but I have found the solution to my issue
It seems that we have SFP+ modules from FS.com that are different revision numbers.
As such the Revision A modules are compatible with 10G-SR/1000SX thus when we plug in a 1GB media converter when the switch port is set to 10G it drops down to 1G and then allows us to plug in our test unit at 10G and the link is then at 10G. and the modules that don't have a revision or are labeled as revision B do not work in the same way
Im assuming that it is mainly due to the 1000SX compatibility.
Thank you
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