Cisco 9606R can't talk with Dell S3148P via Fiber connection

[tbryant97]

I am apparently unable to get any type of link between a Cisco 9606R C9600-LC-48YL fiber module and a Dell S3148P switch.

Dell S3148P Port Config:

!
interface TenGigabitEthernet 2/49
no ip address
portmode hybrid
switchport
switchport mode private-vlan trunk
no shutdown

Cisco 9600 Port Config:

!
interface TwentyFiveGigE6/0/15
switchport access vlan 12
switchport trunk allowed vlan 12
end

 I have verified that both switches have their respective SFP+ modules by running a loop on each switch. The type of transceiver being used on each end is SFP+ 10GBase SR. Is there something that I may be missing? I should at least be getting a link light of some sort.

Dell S3148P Transceiver Tx/Rx Power:

Cisco 9600 Tranciever Tx/Rx Power:

[Reza Sharifi · Accepted solution]

Since you are using multi-mode SFPs, make sure your fiber is also muli-mode. If the physical link does not come up and you have the right transceivers and cable, try swapping the strands on one side of the connection and test again.

HTH 

[tbryant97]

Thank you Reza, if only I knew it was that simple. You have saved me a lot of headaches, after swapping the strands of one of my fiber cables the switches are now showing a link light.

Thankyou so much!

[Reza Sharifi]

You are welcome!

No worries. Sometimes, it is the simple things we miss, but it happens to all of us.

Good luck with your project