Hi
I have 8 S9 Miners that I bought from bought directly from Bitmain as part of the November Batch. I currently am using the Bitmain AW3+++ PSU for each miner. I have set up these miners in a local collocation area that uses a data-feed ethernet cable to pass internet to the miners. Unfortunate for the past week, I have been running into a particular issue with getting the miners online. Approximately every 30 hours, ALL 8 of the miners disconnect from Slush-Pool at the same time and refuses to give me access to the miner settings. (reports 401 access denied) This has happened to me 3 times over this week. I contacted a Network Technician the first time around to make the miners use the Static networking protocol instead of DHCP Protocol and helped me config it in the miners settings once the miners where rebooted and given a new IP by the router. We rebooted all 8 miners at around 8PM and the following night, the miners stopped connecting to the pool at 2:00 am in the morning. I went in to the collocation area and saw no miners where connected to the routers, even thought the all 8 miners were still reviving power. I tried a scan to locate the IP addresses using Angry IP Scanner. The IP addresses were showing as active by the scan and decided to ping using CMD which reported the ping to the miners as successful. I then tried logging in and could not get into the miner settings (and hence, I couldn't see the log to figure out what caused it). I then unplugged and rebooted each miner (while this time, factory resetting the miner) one miner at a time. Each miner then received a new IP on boot and I manually assigned each Miner the same IP address from the Routers IP Reserve List by registering the MAC address of each miner with the router. I then left all the miners to DHCP, and then unplugged each miner's Ethernet cable out of the switch that I was using in order to test if the miners would be assigned the same IP when they reconnect, which the router did once the miner reconnected to the network. I was pleased to see that all 8 miners where back online, so I then configured the miners to slush pool and left them running at around 12:30pm on Wednesday afternoon. Then, unfortunately, the miners disconnected yet again at 10:45pm on Thursday night.
I have yet to go back, but am I now sat here currently now theorizing that my router is the issue and resets the entire network every 30 hours, which causes the miners to drop and lose there minds. My router is a TP-Link 300Mbps Wireless N Router TL-WR841N (
https://www.tp-link.com/uk/products/details/cat-9_TL-WR841N.html) and my switch is a TP Link- SG101DE (
https://www.tp-link.com/il/products/details/cat-5072_TL-SG1016D.html). The ports are currently active on my switch so I doubt that is the cause of the issue. My router does have port forwarding currently enabled, so I can access the miners remotely and off-site. The miners are receiving cooling and temps are below 75 degrees under full load, and unfortunately, since I cannot access the miner settings at this point, I Cannot find the log to see what occurred to make it disconnect from the network.
Any suggestions would be apprititated, and out of curiosity, what networking gear do you use for your S9 miners?
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