09-25-2017 07:17 AM - edited 03-08-2019 12:09 PM
Hi,
I have a pair of 3064PQ with four 40gb ports. I want to connect them with a twinax qsfp cable.
Problem is, 40gbs ports appears has 4x10gb.
Eth1/51/1 -- notconnec 1 full 10G QSFP-40G-CR4
Eth1/51/2 -- notconnec 1 full 10G QSFP-40G-CR4
Eth1/51/3 -- notconnec 1 full 10G QSFP-40G-CR4
Eth1/51/4 -- notconnec 1 full 10G QSFP-40G-CR4
Is there a way to make Eth1/51 as a SINGLE 40gb connection instead of 4x10gb ?
In the past I have done it on 5600 series and I'm pretty sure they appeared as a single port. BTW, both ends of the twinax cable are a single QSFP connector (no 4x10gb split).
Thanks
09-25-2017 07:41 AM
Hi,
You should be able to change it to 40Gig.
Try this command:
hardware profile front portmode
HTH
09-25-2017 08:00 AM
thanks. It seems this command change all qfsp ports ?
Problem is, this N3K has four qsfp ports but I need the first two ports to be 4x10gb and the last two ports 1x40gb.
I suppose it's not possible ?
09-25-2017 08:14 AM
atswcis1(config)# hardware profile portmode ?
48x10g+4x40g 48x10G+4x40G port mode
52x10g+3x40g 52x10G+3x40G port mode
56x10g+2x40g 56x10G+2x40G port mode
60x10g+1x40g 60x10G+1x40G port mode
64x10g 64x10G port mode
I just saw someone has type the command hardware profile portmode 64x10.
So I supposed they all act as 10gb right now...
09-25-2017 08:47 AM
I am not sure if there is way to convert 2 out 4 qsfp uplinks from 10 to 40 but there should be a way to convert all 4 of them.
HTH
09-25-2017 08:53 AM
I opened a case with TAC, I'll let you know the anwser.
11-13-2018 07:43 AM
Did you get an answer from TAC? I know in older versions of code it wasn't possible to breakout only 2 of the 4 40gig ports, but i'm wondering if newer versions of code allow it.
Thanks.
09-07-2019 12:53 PM
Hello!
I've found intresring doc
which says:
Note that even though the command help gives the option to breakout the ports individually, this won't actually work. The options that work are 48x10g+4x40g or 64x10g.
Int's interesting may be this issue is fixed in lastest NXOSes becuse 56x10g+2x40g 56x10G+2x40G port mode can be extreemlyuseful in my case.
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