Cisco Nexus 9k shows interfaces UP even they are down, and other interfaces down which I didn't create

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Your install is: Bare metal, ESXi, what CPU model, RAM, HD, what EVE version you have, output of the uname -a and any other info that might help us faster.

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catalinc
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Joined: Thu Jun 06, 2024 9:55 pm

Cisco Nexus 9k shows interfaces UP even they are down, and other interfaces down which I didn't create

Post by catalinc » Thu Jun 06, 2024 10:07 pm

Hello,

I am trying to setup a Cisco NXOS 9k environment. The server is a bare metal server (HP ProLiant Gen8 - 2 x Intel Xeon, 10 core each - 64 GB RAM) running Ubuntu 22.04 LTS. The only change on Ubuntu was renaming the network interface from eno1 to eth0 (as Eve-NG documentation requires).

I have the following images of Cisco NXOS:
- nxosv9k-9.2.2
- nxosv9k-9.2.1
- nxosv9k-7.0.3.I7.4
- nxosv9k-9.3.6

On all of them I have the following issue:
1. If I select 8 ethernets the Cisco Nexus will have
- 8 UP Ethernets (which is wrong, it should have 8 status link down ethernets)
- 128 Down Ethernets (which you can't control, since they are not in Eve-NG config)

2. I have tried all images of Cisco NXOS, but same issue on all of them.
So If I chose like 20 Ethernets, before creation, there wil be 128 ethernets UP no matter what I do and 52 (which I didn't create and I don't know why they are there) state down.

I have attached 2 images:
- creation of Nexus node
- show interfaces brief on a nexus node with 8 ethernets configured in Eve-NG

Can you please help?
Screenshot 2024-06-07 at 12.56.45 AM.png
Screenshot 2024-06-07 at 1.05.57 AM.png
Screenshot 2024-06-07 at 1.06.04 AM.png
Thanks
Catalin
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Uldis (UD)
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Re: Cisco Nexus 9k shows interfaces UP even they are down, and other interfaces down which I didn't create

Post by Uldis (UD) » Fri Jun 07, 2024 4:41 am

It is specific of Nexus image, it does not support L1 option, and all Cisco nexus images interface states will be up/up by default even nothing is connected
It is not EVE issue

catalinc
Posts: 2
Joined: Thu Jun 06, 2024 9:55 pm

Re: Cisco Nexus 9k shows interfaces UP even they are down, and other interfaces down which I didn't create

Post by catalinc » Fri Jun 07, 2024 6:30 am

Hello,

Thanks for the reply.

How can I correct this? I can shut all down and then use the specific ones? Is there a workaround for this?

Thanks

Uldis (UD)
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Joined: Wed Mar 15, 2017 4:44 pm
Location: London
Contact:

Re: Cisco Nexus 9k shows interfaces UP even they are down, and other interfaces down which I didn't create

Post by Uldis (UD) » Sun Jun 16, 2024 12:54 pm

you cannot, because such is Nexus 9000v image. Noting ca be done with interfaces, you will see all what image does support. Your case 128 ethernet interfaces above

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