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  • 1.  ports going down and up

    Posted 9 days ago

    Hi everyone!

    I recently bought the Aruba Instant On 1960 12XGT 4SFP+ mainly for its 10G ports. I use 2 SFP ports in LACP as downlinks to another switch, ports are running in 1G until I can replace the other switch.

    I use the other 2 SFP ports in 10G mode, LACP for a NAS.

    2 RJ45 ports are LACP to a 3rd switch.

    Ports 1 to 5 on the Aruba are used for a Kubernetes cluster, all 5 are 1gbps. The issue is with these 5 ports, they seem to go down and back up continuously.

    Initially, I had enabled flow control, storm control and jumbo frames. There were no issues until I connected the 5 kubernetes nodes. I disabled flow, storm and jumbo frames first thing, but they are still going down and up continually. I have attached a part of the log and interface statistics.

    I checked the hosts kernel logs etc, but they are not showing any issue.

    When I connect the hosts to the my original switches (Ubiquiti Unifi) I see no errors or problems whatsoever. Flow control is enabled there as well, jumbo frames not and I don't think it has storm control settings.

    I use Netdata to monitor Kubernetes and I'm getting spammed with unreachable notifications. Literally hundreds for the past day.

    I don't understand what these packets with errors are or why that's happening.  Port 10 is my laptop.
    I replaced the UTP cables (they are brand new, good quality). While it could be a cable issue, I doubt its all 5 and they work fine on other devices and with the Unifi switches.
    Can help me out here to figure out what is wrong? I was going to replace all my Unifi switches with these so I can have 10G links between them but I do really need to fix this first.
    Thanks in advance!
    ps. lve been reading the user manual and been searching for 2 less important questions:
    - ssh access; how do I enable that? I wanted to see if it would provide better logging / troubleshooting
    - webgui timeout increase, is this possible? Its infuriatingly short, in particular when troubleshooting, going back and forth between windows.



  • 2.  RE: ports going down and up

    Posted 7 days ago

    I had also logged a support case which actually worked very well! I immediately received a response which asked for more information and generate a support file. The responses were fast and  a few hours later they suggested to have a Teams call. Shared the screen with the Aruba Web interface and we went over the settings. She suggested a few changes and monitor over the weekend:

    Spanning Tree / Global / Spanning Tree Admin Mode: Disabled
    Switching / EEE Configuration / Global / Auto Port Power Down: Disabled
    Switching / EEE Configuration / Global / Low Power Idle (EEE): Disabled
    Switching / Loop Protection / Global / Loop Protection: Enabled
    Switching / Loop Protection / Interface Configuration: All Interfaces: Loop Protection: Enabled

    Since I had been receiving dozens of alarms for my nodes becoming unreachable and reachable again per hour, it was quite fast to conclude that one of these settings was the culprit. I have received no alarms since yesterday 16:00.

    I don't expect STP to be the one, I think its the energy settings that was disabling ports. I could be wrong of course, its just a hunch.

    She suggested to create another support file monday, share it and we will narrow down what the issue was.


    Original Message