So i recently got a great deal on a 4948 with the 10GB modules included. I have them installed correctly and purchased a 10GB OM3 LC-SC 1 meter fiber cable that connects the switch to my Mikrotik Router.
So Mikrotik lists the SFP and connector type which i have the IP configured on. The switch however shows the interface protocol as down and interface is down:
TenGigabitEthernet1/49 is down, line protocol is down (notconnect)
Hardware is Ten Gigabit Ethernet Port
Here is what i don't get, what isn't making this work lol? Mikrotik has the SFP up and running bu the switch isn't working with the 10GB module. here is the config for that interface:
description Uplink to RouterBOARD SFP Interface
ip address 10.10.10.2 255.255.255.248
So i guess a little ideas on troubleshooting the cisco interface being down would be helpful. Do i just not have a correct cable for this setup? I've never gone LC to SC before only LC to LC with a 3560 and 2960. It's a multi mode fiber cable if that matters.
Solved! Go to Solution.
Try cross the RX and TX transceivers at the SC side of the panel , check the light on the panels match the SFP fiber light, dont look directly into them , it could be just crossed over as its SC and LC i use them a lot and have to cross the SC usually on patch panel side
Yeah the plugs are going into the correct ports light/transmit and receive wise. I'm not sure if it's something with the Mikrotik end or the module itself on the switch.
The only thing that leads me to believe it's not the switch module is because the module becomes active/usable when plugged into a 2960G SFP.
Would it safe to side with the Mikrotik router or SFP module being the issue? I don't see any protocol or module issues between the two but what else could it be.
- You could also enable syslog on the Mikrotik router ; try to make a connection and see which messages are reported to the syslog server :