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40G CFP optics in the new Catalyst 6807-XL, connectivity issues

Hi!

We are implementing a project with the new Catalyst 6807-XL switches and 40G CFP-40G-SR4 optics inserted in the WS-X6904-40G linecards.

We've tested conectivity between two 40G CFP optics using a MMF OM4 50 microns MPO-MPO jumper and the test was unsuccessful, The electronics seem to be working all right, so we suppose it's a problem with the jumper.

 

Have you had any experience regarding this 40G optics conectivity?

 

Thanks & regards!

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Beginner

We are experiencing the same

We are experiencing the same exact problem. Did you ever receive a resolution to this issue?

Thanks

Beginner

Yes vgallo, indeed it was the

Yes vgallo, indeed it was the jumper.

 

To interconnect two 40G CFP optics, you have to have crossover MPO-MPO jumpers. 

 

LC/SC jumpers can be "twisted" onsite to make them crossover, but 40G jumpers can't, because their CFP form factor doesn't allow you to do so. You have to get the MPO-MPO manufactured in a crossover fashion.

 

There are also some more complex matrix to make this inversion of Rx/Tx using MPO-MPO straighthrough jumpers, but the easy way out is to buy crossover MPO-MPO jumpers.

 

Hope it helps

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