Hi Josh. Opened a ticket and changed interface. Now it works. Thanks for your suggestion though.  /Thomas  
Hi, I need a 10Gbps fiber trunk between a PC8024 and S5148F-ON. The connection never comes up. Is there any settings I should be aware of? Link flaps on PC8024: <189> Jul 4 12:13:10 san-sw2-1 TRAPMGR[248325744]: traputil.c(638) 31380 %% Link on Te1/0/24 is failed<189> Jul 4 12:13:10 san-sw2-1 TRAPMGR[248325744]: traputil.c(638) 31379 %% Link Down: Te1/0/24<189> Jul 4 12:13:09 san-sw2-1 TRAPMGR[248325744]: traputil.c(638) 31378 %% Link Up: Te1/0/24<189> Jul 4 12:13:09 san-sw2-1 TRAPMGR[248325744]: traputil.c(638) 31377 %% Link on Te1/0/24 is failed<189> Jul 4 12:13:09 san-sw2-1 TRAPMGR[248325744]: traputil.c(638) 31376 %% Link Down: Te1/0/24<189> Jul 4 12:13:08 san-sw2-1 TRAPMGR[248325744]: traputil.c(638) 31375 %% Link Up: Te1/0/24<189> Jul 4 12:13:07 san-sw2-1 TRAPMGR[248325744]: traputil.c(638) 31374 %% Link on Te1/0/24 is failed<189> Jul 4 12:13:07 san-sw2-1 TRAPMGR[248325744]: traputil.c(638) 31373 %% Link Down: Te1/0/24<189> Jul 4 12:13:07 san-sw2-1 TRAPMGR[248325744]: traputil.c(638) 31372 %% Link Up: Te1/0/24<189> Jul 4 12:13:07 san-sw2-1 TRAPMGR[248325744]: traputil.c(638) 31371 %% Link on Te1/0/24 is failed<189> Jul 4 12:13:07 san-sw2-1 TRAPMGR[248325744]: traputil.c(638) 31370 %% Link Down: Te1/0/24<189> Jul 4 12:13:06 san-sw2-1 TRAPMGR[248325744]: traputil.c(638) 31369 %% Link Up: Te1/0/24<189> Jul 4 12:13:06 san-sw2-1 TRAPMGR[248325744]: traputil.c(638) 31368 %% Link on Te1/0/24 is failed<189> Jul 4 12:13:06 san-sw2-1 TRAPMGR[248325744]: traputil.c(638) 31367 %% Link Down: Te1/0/24<189> Jul 4 12:13:06 san-sw2-1 TRAPMGR[248325744]: traputil.c(638) 31366 %% Link Up: Te1/0/24<189> Jul 4 12:13:05 san-sw2-1 TRAPMGR[248325744]: traputil.c(638) 31365 %% Link on Te1/0/24 is failed<189> Jul 4 12:13:05 san-sw2-1 TRAPMGR[248325744]: traputil.c(638) 31364 %% Link Down: Te1/0/24<189> Jul 4 12:13:05 san-sw2-1 TRAPMGR[248325744]: traputil.c(638) 31363 %% Link Up: Te1/0/24<189> Jul 4 12:13:04 san-sw2-1 TRAPMGR[248325744]: traputil.c(638) 31362 %% Link on Te1/0/24 is failed<189> Jul 4 12:13:04 san-sw2-1 TRAPMGR[248325744]: traputil.c(638) 31361 %% Link Down: Te1/0/24 show fiber-ports optical-transceiver Output InputPort Temp Voltage Current Power Power TX LOS[C] [Volt] [mA] [dBm] [dBm] Fault-------- ---- ------- ------- ------- ------- ----- ---Te1/0/24 39.5 3.326 26.0 -1.598 -2.307 No No   Link never comes up on S5148F show interface eth1/1/46Ethernet 1/1/46 is up, line protocol is downDescription: Link to oldHardware is Eth, address is d8:9e:f3:cc:8c:2eCurrent address is d8:9e:f3:cc:8c:2ePluggable media present, SFP+ type is SFP+ 10GBASE-LRWavelength is 1310Receive power reading is -1.550881 dBm   Regards Thomas
interconnect PC8024 with S5148F-ON