I do see in logs where stp disables the vlan then enabled it then disabled it the other day and then it is unable to connect to the sntp server after that:Д 9/08/17 08:42:03 00839 stp: CST Root changed from 0: e0071b-d56980 to 32768: Thought about the duplicate IP so double checked that. Vlans are tagged across the uplink and there are no vlan mismatches.

It has the latest firmware as do all of my 2920s.

I do have another 2920 that I can put in its place if necessary however I am hoping someone can tell me some magic that they have run across that will fix this issue. The switch acting as the gateway is unable to ping it at the same time however.ДЄgain if I remove/modify the ip address or the gateway on the problem switch the problem resolves immediately and then a few days later it comes back. If I console into it while it is in this condition via a console cable the switch is able to ping the gateway that it has set. Then it becomes unresponsive to ping/etc.

I have found that if I remove the default-gateway and re-add it, this fixes it for a few days, if I remove the IP address of the switch and re-add it, this fixes it for a few days. Has anyone else with Aruba 2920's run into an issue where an access switch is not accessible via IP at all including SSH and is yet still passing all other traffic for the clients that are connected to it?

Blacklist mac address aruba