100Gb breakout cables and part number

[Erol]

Need guidance on part number to split 100gb into 4x 25gb to single mode fibre much like diagram below, but unlike splitting 40Gb to 4x10gb:

Also, if part exists, is it supported on 7720-32C?

[WillyHe]

This link provides you compatibility information for all types of connections

https://optics.extremenetworks.com/

[FredrikB-NN2]

Part numer 10405 will get you 4 x 25 G with 2 km reach over SM. It is equipped with a pigtail with MPO contact that you can split into LC or SC with a suitable split box or another pigtail. It is compatible with the 7720 for both EXOS/SE and VOSS/Fabric.

Other manufacturers have come up with a 100GBASE-PLR4 that promises 10 km over SM where you can have 4 x 25GBase-LR in the other end(s).

Beware that you should monitor your FEC settings when running 25 G over any link type. FEC mismatch is a common cause for incompatibility when using 25 G. RS-FEC, called CL91 in Extreme EXOS, should be used in both ends.

[Erol]

Thanks, but in IRIS, that product only seems to have a one-to-one relationship rather than one-to-four - IRIS does not provision a pigtail for this GBIC - I cannot connect the switch where the 10405 is added to a 7720 to a LR SM Gbic of another, except when I add the same 10405 to the another switch in a one-to-one relationship. Is IRIS wrong? Can you advise?