fiber link not goes up

[Mabouzid]

Please I have urgent inquire that  I have  Catalyst C9300X-12Y , connected to Korenix Jnet 6528Gf  through fiber link ptach cord it's new implemntation , unfortunalty the link not goes up ,the port bring up at the Korenix switch but sill down from the other side Meraki Switch ... the used SFP at meraki switch P/N MA-SFP-1GB- LX10 & Korenix Jnet SFP korenix SFPGLX10, the current running Firmware at the Meraki  CS 17.1.3, the switches C9300X-12Y managed through meraki cloud dashboard , all the trouble shooting steps applied at the port setting (speed , duplex , negotiation) with no luck , any one have idea about such issue

thanks 

Mohamed Abouzaid

+201092086608

[DarrenOC]

Hi @Mabouzid , what’s the fibre between both switches?

[Mabouzid]

LC-LC Singlemode Fiber Optic Cable 

[DarrenOC]

Might be a silly question….have you tried swapping the ends round on one of the fibre patch leads?  

[Mabouzid]

yes same thing , other thing if  noticed if connected the same Korenix switch to catalyst switch 9200 the link goes up normal

[DarrenOC]

Ah, so we’re beyond troubleshooting a layer 1 issue.

Have you contacted Meraki support?  Is the 9300 on the latest firmware?

[Mabouzid]

yes i send ticket to Meraki Support , but till now no reply , the current firmware stable release candidate CS 17.1.3 , is there recommended Firmware to bring the link up ?

[DarrenOC]

You’d be better served ringing support directly.  You can find their number in your dashboard.

[Mabouzid]

unfortunatly i am not able to reach them 

the fiber patch cord used between both switches is 

<COMMSCOPE SYSTIMAX SOLUTIONS | FFWLCLC42-JXM003 | FFWLCLC42-JXM003
TeraSPEED OS2 Fiber Patch Cord, 2 Fibers, LC - LC 1.6mm Duplex, LSZH, Yellow, 3 m>