I am able to connect Cat3750 port g1/0/25 with Cat4503 using SC-LC duplex fiber cable. But when i connect the same port from 3750 to 6509 using the same cable, the port on the 6509 shows "notconnected", here is the info of the port:
6509> sh port stat 2/11
Port Name Status Vlan Duplex Speed Type
----- -------------------- ---------- ---------- ------ ----- ------------
2/11 notconnect 1 full 1000 1000BaseSX
Can someone show me what is the problem? thanks