What is this cable for: X66250-5-N-C, CABLE,LC-LC,OM4,5m,-C | NetApp | Page 1

open vale Feb 20, 2023, 4:31 PM

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The packing slip for A400 contains 8 of those cables. Could you pleased tell what they are for? I am expecting they should be for 10Gb. But, based on networking guy here, the 10Gb cables should be MPO to LC, not LC-LC

trail sundial Feb 20, 2023, 7:37 PM

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We’d have to look at the exact bill of materials to know. It’s probably for client connectivity uplink. They’re a pretty cheap part and it’s better to have them than not have them when doing an install. Your partner may have included them just in case, based on experience. This is the install guide poster https://docs.netapp.com/us-en/ontap-systems/media/PDF/215-14510_2020_09_en-us_AFFA400_ISI.pdf

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Some 100G optics use MPO, but 10G is usually just LC. What is on the customer side is up to you, and while MPO is not unheard of for top of rack, LC is significantly more common in my experience

marsh dock Feb 21, 2023, 1:54 PM

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those are OM4 optical cables that connect LC to LC, just as you stated

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It's likely because you either have 8x of the X6604A (10GbE, SFP+ modules) for usage with the onboard SFP28 ports with your AFF A400

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the good news is that the same cable will work with either those SFP+ modules or the X65404 (25GbE, SFP28) should you desire to upgrade to 25GbE infrastructure in the future

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MPO connections aren't really used until you get to 40/100GbE connections due to the connector of the associated optical module

open vale Feb 22, 2023, 12:13 PM

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@marsh dock

 Are X6604A's add-on cards and not onboard? I don't see them from that AFF400 installation guide

Are any one of following cables can be used for connecting to 3132Q-V switch?
  X66100-5    Cable Direct Attach CU qsfp,40Gb, 5m
  X65402    QSFP, Opt, 40Gb, Shortwave
  X65401     QSFP, Opt, 40Gb, Shortwave, X190001

marsh dock Feb 22, 2023, 2:32 PM

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X6604 is an optical module that get inserted into either onboard ports e0e-e0g or an adapter card. Those modules are speed-locked at 10GbE.

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Yes, those are exactly what you need to connect to a Nexus 3132Q-V switch. The X65401 goes into the switch port; the X65402 goes into ports e3a & e3b. From there, the X66100-5 cables make the connections between those optical modules.

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It should look something like this. Your mileage may vary and batteries are definitely not included.

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Disclaimer: the switches displayed are Nexus 3232C which visually look different. However, the premise of cabling is the same.

#What is this cable for: X66250-5-N-C, CABLE,LC-LC,OM4,5m,-C