You can very well make use of LC/LC MM cable to patch up the SX MM SFPs installed in ur 3560 switches.
We have done up with patching our 3750s using the SX-MM SFPS and LC/LC MM fiber patch cords..
I had tried with it. However, the LED and links doesn't goes up.
I was thinking either the SFPs or the fiber cable were faulty.
The fibre cable is fixed to the connector of the LC.
Therefore I can't twist it.
First to make sure your fiber cable is ok juist put a light at one end of the fiber and try to see the light at the other end, u can use a tourch. Also make sure the gigabit interface is not shutdown just go to the gigabit interface and type no shutdown, if u paste ur config for the swicth it would be more easier to figure out the problem
Hi CCIE use following commands in ur gigabit interface
interface gigabit 0/1
switchport trunk encapsulation dot1q
switchport mode trunk
use same comands in other switch too.
Please check and let me know
Your fiber return loss is too much it should be less than 5 db so try to change the fiber cable too. Before changing check it the way i said u before.
Thanks for all the knowledge sharing.
I had verify that the cables are fine(Able to see light from one end to the other)and I also verify the pair are correctly placed. Meaning A to A, B to B, not vice versa.
I got 2 pairs of similar cable both working as tested in similar ways
The only thing is that it might be a wrong specification cable as what Yasir mentioned.
Thanks! I will try to get another piece of different specification cable.
I notice the arrows indicated on the SFP and i swap the cables making 1A to 2B and 1B to 2A instead of the previous 1A to 2A and 1B to 2B.
How I do it? Took the risk of breaking the cables and took out 1 side of the fibre cable encasement on the LC connector from just 1 end and swap it. Fix it back and plug back to SFP.
Green LED shown! Console shows "01:10:28: %LINK-3-UPDOWN: Interface GigabitEthernet0/2, changed state to up" and "01:10:30: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet0/2, changed state to up"!
Great! I'm done!
Thanks a lot for all the suggestion and knowledge!