Conectar 2 switch N1148T-ON, SFP 1000BASE-SX

Olá.

Estou tentando conectar dois switch N1148T atarves da porta SFP, estou usando um transceiver 100BASE-SX D'Link DEM-311GT, estou com os dois switches no mesmo rack e estou a usar um pigtail (lc-lc) de manobra.

Conecto os SFP e o switch reconhece, inclusive me da um yes para Dell Qualified, conecto o cordão mas o link não sobe e não acende nenhuma luz na porta, já tentei configuração statica de negociação, atualizei o firmware do switch mas nada.

Interface Name................................. Te1/0/27
SOC Hardware Info.............................. BCM53440_B0
Link Status.................................... Down /None
Keepalive Enabled.............................. FALSE
Err-disable Cause.............................. None
VLAN Membership Mode........................... Access Mode
VLAN Membership................................ 1
MTU Size....................................... 1518
Port Mode [Duplex]............................. Full
Port Speed..................................... 1000
Link Debounce Flaps............................ 0
Auto-Negotation Status......................... Off
Burned In MAC Address.......................... E4F0.04AD.6E8D
L3 MAC Address................................. E4F0.04AD.6E8F
Sample Load Interval........................... 300
Received Input Rate Bits/Sec................... 0
Received Input Rate Packets/Sec................ 0
Transmitted Input Rate Bits/Sec................ 0
Transmitted Input Rate Packets/Sec : .......... 0
Total Packets Received Without Errors.......... 0
Unicast Packets Received....................... 0
Multicast Packets Received..................... 0
Broadcast Packets Received..................... 0
Total Packets Received with MAC Errors......... 0
Jabbers Received............................... 0
Fragments/Undersize Received................... 0
Alignment Errors............................... 0
FCS Errors..................................... 0
Overruns....................................... 0
Total Received Packets Not Forwarded........... 0
Total Packets Transmitted Successfully......... 0
Unicast Packets Transmitted.................... 0
Multicast Packets Transmitted.................. 0
Broadcast Packets Transmitted.................. 0
Transmit Packets Discarded..................... 0
Total Transmit Errors.......................... 0
Total Transmit Packets Discarded............... 0
Single Collision Frames........................ 0
Multiple Collision Frames...................... 0
Excessive Collision Frames..................... 0