Network Management

Is that for all devices connected to the switch? Or a specific.
Does the same happen on all the ports of the switch?

The logs suggest that the client drops the connection. Support may have commands to check deeper.

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Herman Robers
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If you have urgent issues, always contact your Aruba partner, distributor, or Aruba TAC Support. Check https://www.arubanetworks.com/support-services/contact-support/ for how to contact Aruba TAC. Any opinions expressed here are solely my own and not necessarily that of Hewlett Packard Enterprise or Aruba Networks.

In case your problem is solved, please invest the time to post a follow-up with the information on how you solved it. Others can benefit from that.
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Original Message:
Sent: Jan 05, 2022 11:10 AM
From: Adnan Khan
Subject: HP Aruba 2530 series

Hi there

I have a port on HP aruba 2530 series which continuously flaps when pc connected. I troubleshooted the cable and it was fine, also checked vlan dhcp server and it worked fine but the user got 169.254.x.x ip when connected on this port.

I 11/21/21 04:00:38 00077 ports: port 17 is now off-line
I 11/21/21 04:00:26 00076 ports: port 17 is now on-line
I 11/21/21 04:00:22 00077 ports: port 17 is now off-line
I 11/21/21 04:00:22 00076 ports: port 17 is now on-line
I 11/21/21 01:00:31 00077 ports: port 17 is now off-line
I 11/21/21 01:00:23 00076 ports: port 17 is now on-line
I 11/21/21 01:00:21 00077 ports: port 17 is now off-line
I 11/20/21 22:27:49 00076 ports: port 17 is now on-line
I 11/20/21 22:27:46 00077 ports: port 17 is now off-line
I 11/20/21 22:27:45 00076 ports: port 17 is now on-line
I 11/20/21 22:27:42 00077 ports: port 17 is now off-line
I 11/20/21 22:27:40 00076 ports: port 17 is now on-line
I 11/20/21 22:27:34 00077 ports: port 17 is now off-line
I 11/20/21 22:27:32 00076 ports: port 17 is now on-line
I 11/20/21 15:48:44 00077 ports: port 17 is now off-line

The content of this email is considered privileged. If you are not its intended recipient, please notify the sender and delete all copies immediately.

Hi! It looks like something is going on at device's NIC level (Are Firmware/OS NIC drivers fully updated? is the NIC configured at OS level to disable the port to save energy - AKA sleep mode - when no traffic is flowing through?), the fact the port is flapping without any Spanning Tree reference logged (with the typical blocking->forwarding learning cycle) maybe is due exactly to NIC port on the connected edge device (PC). If I were you I will triple check all on that side (from physical cabling up to NIC's configuration not excluding a check about NIC driver and firmware versions).

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Davide Poletto
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Original Message:
Sent: Jan 05, 2022 11:10 AM
From: Adnan Khan
Subject: HP Aruba 2530 series

Hi there

I have a port on HP aruba 2530 series which continuously flaps when pc connected. I troubleshooted the cable and it was fine, also checked vlan dhcp server and it worked fine but the user got 169.254.x.x ip when connected on this port.

I 11/21/21 04:00:38 00077 ports: port 17 is now off-line
I 11/21/21 04:00:26 00076 ports: port 17 is now on-line
I 11/21/21 04:00:22 00077 ports: port 17 is now off-line
I 11/21/21 04:00:22 00076 ports: port 17 is now on-line
I 11/21/21 01:00:31 00077 ports: port 17 is now off-line
I 11/21/21 01:00:23 00076 ports: port 17 is now on-line
I 11/21/21 01:00:21 00077 ports: port 17 is now off-line
I 11/20/21 22:27:49 00076 ports: port 17 is now on-line
I 11/20/21 22:27:46 00077 ports: port 17 is now off-line
I 11/20/21 22:27:45 00076 ports: port 17 is now on-line
I 11/20/21 22:27:42 00077 ports: port 17 is now off-line
I 11/20/21 22:27:40 00076 ports: port 17 is now on-line
I 11/20/21 22:27:34 00077 ports: port 17 is now off-line
I 11/20/21 22:27:32 00076 ports: port 17 is now on-line
I 11/20/21 15:48:44 00077 ports: port 17 is now off-line

The content of this email is considered privileged. If you are not its intended recipient, please notify the sender and delete all copies immediately.