how to connect 80KM Fiber optice cable

Posted on 2010-08-25
Last Modified: 2012-05-10
We have high distace own Fiber optic cable (more than 70KM), need to connect two of our Cisco Provided SFP Port, further the switches are connected to the Router.
Question by:hussainha
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Author Comment

ID: 33520813
Urgent reply will be highly appreciated

Expert Comment

ID: 33520881
Is the fiber single mode or multi mode? What protocols are your planning on running across this link?

Author Comment

ID: 33522849
The fiber is single mode and we are planning to use Ethernet protocol IEEE 802.1x (  which mean they will work as LAN)
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Expert Comment

ID: 33523087
what are the models of your switches and routers at each end. Will you be utilizing the same IP subnet at both ends or different?

Author Comment

ID: 33525910
We did not decide which models we will use
And yes we will use the same subnet at both ends

Accepted Solution

hoffmanconsultingllc earned 500 total points
ID: 33526742

Cisco switch gear will not be able to interconnect the two sites as the longest distance a single mode fiber SFP can go is 70KM. Read this for reference, 
I would suggest reaching out to the cisco or juniper representative in your area or call the 800 number to see if they have a router card that can handle that distance. There are companies that make SFP's that can go 80KM but that is a best case scenario; you have to take into account the db loss, splices and so on. Here is a company that makes SFP's that can go 80KM however i do not know if they are certified with Cisco gear. 

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