I have been having problems with a link flapping only when working with the AXM763 Module, but when I change 1G module it works without problems. Also there other 2 links with the same configuration working with the AXM763 10G.

I understand that the distance between my buildings is avobe the maximum distance, But How can I explain that 2 of those links work and only one fails.

I was reading cisco documentation and fiber specs and I found Mode Conditioning Patch cables are required for 10GBASE-LRM SFPs working on OM1 MMF because those cables reduce the effect called differential mode delay (DMD). 

And I was thinking that this might help me with my problem, Can anybody help me with this problem? If it could work or not or if I missunderstood the Mode Conditioning Patch Cables.( I am not an expert in fiber)

[![Current Topology](https://i.stack.imgur.com/ps5tS.png)](https://i.stack.imgur.com/ps5tS.png) 

[![Test Topology](https://i.stack.imgur.com/q4Dn5.png)](https://i.stack.imgur.com/q4Dn5.png)

Thank you!