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10G SFP+ ports not always working in SX1024 switch

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Hi all,

 

I have some problems with connecting switch SX1024 to other devices. I have Mellanox SR SFP+ modules inside switch cages and I am using SR cables (checked with other devices and they are ok).

 

I have Cisco 6500 series with 10G WSX6704 module with fiber SC connectors. I can't get link when connecting it to Mellanox SFP+ modules using LC-SC cable.

 

I have no link also when connecting two Mellanox SFP+ modules together on the same switch (port to port).

 

I am able to get link when connecting SFP+ modules to f.e. network card or Dell switch with SFP+.

 

 

Does anyone has idea why LC-SC connection is not working in my case?


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