Wired Intelligent Edge (Campus Switching and Routing)

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Occasional Contributor II

Aruba 10G SFP+ LC LRM J9152D Lack of support on mainstream switches

I am curious why the Aruba 10G SFP+ LC LRM J9152D optic does not seem to be supported on many of the current mainstream switches.

 

Currently models that lack this support both in Iris and in the Data Sheets:

 

8320 Series

2930F Series

2540 Series

 

Older or lower-end switches that do include support for 10 Gigabit LRM through the J9152A optic

 

2530 Series

2920 Series

1850 Series

 

10-Gigabit LRM really is a game changer for many places which still have older OM1 or Single Mode to data closets since it is the only optic which can use both Mulitimode OM1 with 10 Gigabit to 200m and Single Mode to 300m yet it is still priced at the same price point as 10G SR.  Can anyone explain why the support for LRM is not in new switches yet it is in older models?  Is this support ever going to be added?

 

Thanks,

 

Kelly

New Contributor

Re: Aruba 10G SFP+ LC LRM J9152D Lack of support on mainstream switches

I'm wondering exactly the same thing! 10G LRM modules would be perfect to support 10G speeds on older cabling. Now, I am forced to upgrade and replace all my fiber cabling throughout my building.

Contributor I

Re: Aruba 10G SFP+ LC LRM J9152D Lack of support on mainstream switches

LRM needs to be supported in the hardware. Not each switch had support for LRM because of the error correction that needs to be done. The Aruba switches that supports LRM needs a additional SFP+ module. This module has support for LRM. So the builtin interface doesn’t support lrm.
Willem Bargeman
ACMX#935 | ACCX #822
Occasional Contributor II

Re: Aruba 10G SFP+ LC LRM J9152D Lack of support on mainstream switches

Willem thanks for your response.

 

I suppose this is more of a question for the people who designed the brand new switches such as the top of the line 8320 core switch along with the other models mentioned and left out the hardware support for LRM.  Why skimp on the hardware support of such a valuable technology?  So there is no way to add the support for LRM in the future via a programmable ASIC or run the error correction in software?

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