Switch does not start after power restored
I have 2 x TP-Link Switches in a rack about to be deployed to a remote site. As part of the build, I need to test the resilience of ALL the hardware. I have been doing UPS testing.
UPS is an APC Smart-3000 with 2 outlet groups. When running a shutdown test, all equipment that can run Network UPS Tool (NUT) shuts down gracefully, including the UPS itself when the "LOW BATTERY" watermark is reached. This is working great.
The UPS has 2 x power outlet groups. The TP-Link SX3016F has 1 power supply in each power outlet group. There's a 75 second delay from the main outlet group starting to the second outlet group starting.
Problem: ALL equipment starts up correctly except for the SX3016F switch (with is the core switch and brings everything together). Using a console cable, I can connect to the UPS and see what it is doing. The switch is sitting at its Boot Menu, waiting for user input as to what it should do.
entering option 3 "Start" allows the switch to start up and commence operations.
a few seconds after Start, the below message appears in the console
Limit DDR size at 3GB due to power of 2 requirement of Address decoding
Why would this be happening? Is this something related to the switch starting up with only power to 1 power supply?
Also, the other switch starts up fine. It has 1 only power supply (model SG3428XPP-M2 v1.20). Both switches are configured & managed with an OC200 in the same rack.
The issue has appeared a few times now and it's very annoying.
@Clive_A Skyler from Tech Support has asked me to test rebooting the SX3016F switch with no console cable connected. I've tried capturing video on my phone but it's shakey and poor quality, plus a screencast from my laptop.
With a console cable connected to the SX3016F, I commanded the OC200 to reboot the switch. The switch did not start up correctly, but hung waiting for user input again.
I have just restarted the OC200, SX3016F and SG3428XPP-M2 with no console cables connected to switches. The OC200 and both switches started up correctly. I will be retesting pulling the power on the SX3016F and reconnecting it next.
With a (USB-A to microUSB) console cable connected to a switch, the console connection shows "Input string contains illegal characters". I have seen using both PuTTY and minicom (CLI) console connections. I will attempt another video and screencast during the next round of testing.
