I bought this LB4M and it was working fine until few days ago. I was trying some of the features such as vlan or port channel, and uppon a casual reboot, I locked myself out of the switch.. The switch isn't pulling any DHCP address from the server (which is working 100% fine) and I can't connect to console port via a (USB to Serial -> Serial Cable -> Serial to RJ45 Adapter with the pin layout modified for NULL-Modem at rate 11520, 8bit, parity none, flow control none (as written in the manual). Any idea what I should try next? I even removed the "cmos"(?) battery on the mainboard and it changed nothing.
Here's the pin layout if anyone here is familiar with theses kind of adapter :
I'm more used to cisco 2960 where if you lock yourself out, you bush the button and it's reset to default. How about theses? Any way to hard-reset without telnet/console?.
Even locked out, it is working as an unmanaged switch for the moment, but it looks like it is blocking DHCP request (It can't take an IP for itself, and blocking the client from receiving one). However, if the client enters a static IP, it can succesfully connect to the rest of the network.
For the interrested, I modified my LB4M for a more "Home Friendly" usage. I removed the loud fan at the back and added two 120mm slim fan. Here's the picture! PS: I didn't intented to ever rack-mount the switch, so the outside fan didn't really borthered me.
The one in the back of the switch had place to go inside once the 3 small stock fan were removed. This one is pulling air out of the switch as the little one were doing.
The one in the front is entirely outside pulling air in the switch.It couldn't be put inside safely because of the "screws" I used who were too close to the daughter board.
Thank you for any help provided for the hard-reset.!
Edit : What is the default baud rate? Is it 9600 or 115200? They are completely losing me in the manual.