Nodes connected through NICs not reachable

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Chathura Niroshan

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Dec 16, 2025, 2:47:12 PM (yesterday) Dec 16
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Hi Cloudlab Admins,


I have initiated an experiment to test different networking workloads with a 200 Gbps connection. 
I have created the same experiment with the same nodes and the same profile many times before without any issue. 
But in my current experiment, two nodes seem to be unreachable from each other (tested using ping and iperf3). 

Could you please check whether there is anything wrong with the switch or the connection between the nodes? 

Please let me know ig you need more information from me. 

Thanks and regards,
Chathura

Mike Hibler

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9:16 AM (6 hours ago) 9:16 AM
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We are still having issues with the 100Gb interfaces on the sm110p nodes.
We suspect it might be the 400 to 100Gb breakout cables in use. The staff
at Wisconsin are looking into this.

I have scheduled all the affected nodes to go out of service after their
current experiments. These are sm110p-10s10605 - sm110p-10s10608.
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