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With Nutanix Twinax Cables, which Switches are supported?

Adventurer

With Nutanix Twinax Cables, which Switches are supported?

Hello All, 

 

With Nutanix Twinax cables, there are some switches which are suitable, like Arista switches, and there are some switches which are not suitable, like Cisco Switches with some iOS versions. One of my partners want to learn which switches are ok and which switches are not ok for 10G SFP+ twinax cables. Can you please guide us on this issue? The twinax cables are not suitable or supported by some switch vendors. 

 

Thank you...

4 REPLIES
Nutanix Employee

Re: With Nutanix Twinax Cables, which Switches are supported?

There is not a exhaustive list that we have just now on the compatibility of switches which can use the Nutanix twinax cables.

Most Cisco Nexus switches (5000/5500 series) work fine with Nutanix SFP+ twinax cables when you issue the command to use 3rd party twinax cables on Cisco Nexus switches (service unsupported-transceiver).

Cisco catalyst switches which support 10G SFP+ ports usually work only with Cisco's SFP+ cables (SFP-H10GB-CU3M).

Apart from this, most Dell should work fine with Nutanix SFP+ twinax cables while HP work fine with their own cables.

 

You can refer the below KB for cables supported on Nutanix boxes:

https://portal.nutanix.com/#/page/kbs/details?targetId=kA0600000008WqRCAU

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CB
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Moderator Moderator
Moderator

Re: With Nutanix Twinax Cables, which Switches are supported?

Howdy,

That is a little tricky, as SFP compatibility is usually dictated by the switch vendor, not by the SFP vendor. 

 

Our SFP's work well across many switch models, but there are certain vendors/switches that just won't play nice with any third party SFP's. Examples being HP ProCurve and Cisco Nexus. For switches that don't play nice, there are sometimes ways to "override" the switches to accept third party SFP's, either by running a certain software version or some sort of override config statement (like service unsupported-transceiver on nexus).

 

Either way, for those switches, it is usually best to use the switch vendor's preferred SFP options (usually first party options).

 

At the end of the day, the general guidance that we give out is that if there is any uncertainty at all, work with your Nutanix account/channel team to verify what twinax cables will be best for a particular set of switches. If they don't know offhand, they can consult with support/engineering/PS, which maintains point in time information on what switches/versions/configs have been successful.

 

For reference, Nutanix's SFP cables are currently Molex 074752 series. 

 

3 Meter Datasheet: http://www.molex.com/webdocs/datasheets/pdf/en-us/0747521031_CABLE_ASSEMBLIES.pdf

Jon Kohler | Principal Architect, Nutanix | Nutanix NPX #003, VCDX #116 | @JonKohler
Please Kudos if useful!
Trailblazer

Re: With Nutanix Twinax Cables, which Switches are supported?

Apologies for the late response but I can confirm that the Cisco 4500-X switches do not support the cables supplied by Nutanix, not even with the command to support 3rd party cables.  We had to purchase: CISCO (SFP-H10GB-CU3M=) 10GBASE-CU SFP+ cables to finally get the 4500-X switches talking to the Nutanix hardware.

Wayfarer

Re: With Nutanix Twinax Cables, which Switches are supported?

Would those same cables work between a Cisco 3524X and Nutanix nodes?