Along with what Josh said, there is a paper dedicated to stacking the N4000 here: https://www.dell.com/support/article/us/en/04/sln314193/stacking-dell-networking-switches-n4032-n4032f-n4064-n4064f?lang=en It is highly recommended that switches be at the same firmware version before stacking them. Other than that, the 32 and 64 port versions of the N4000 should be compatible for stacking. As far as a stack cable, the N4000 series doesn't have a dedicated stack cable or stack port. You would simply use one or more ethernet ports and put them in stack mode. Hope this helps.
DELL-Josh Cr
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January 17th, 2019 07:00
Hi,
The bandwidth depends on the switch model. Since you mentioned the N4000 series, the stacking speed on those is 21Gbps. You can stack with a single cable, but two cables adds redundancy. You can stack switches of the same series so you can stack a 32 port and 64 port. Page 231 https://downloads.dell.com/manuals/all-products/esuprt_ser_stor_net/esuprt_networking/esuprt_net_fxd_prt_swtchs/networking-n4000-series_administrator-guide10_en-us.pdf
They are QSFP+ cables on the N4000 series. You can use those ports as direct connections to devices but they are not sff 8088 cables.
vt1012
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January 17th, 2019 08:00
feleling
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February 11th, 2019 16:00
Thank you for your answer.
It helped me a lot.