WR Switch outputs 62.5 MHz not 125 MHz
The description of two SMB connectors on the front panel says "125MHz out" and "125MHz in". The Switch does not provide 125 MHz reference clock output but 62.5 MHz (the same one which is fed to GTX SerDes). In future releases of Switch HW the description on the front panel should be changed to 62.5 MHz output or to 10 MHz output (10 MHz is better, more usefull for WR users but requires hardware modification). The 125 MHz input should be removed or decided to use for some other purpose.