SG300|SG500 console port not working

[bcorrado]

Hello All,

I have various small business model switches. I've tried to console into many of them with a 9-pin female to female DB9 null modem cable with no luck. I've tried all baud rates that were suggested including 115200. I've configured the PuTTY session with 8 n 1 with flow control set to none. I've tried connecting it through my laptop with a serial to USB adapter and I also tried to go directly into my desktop without using a usb to serial adapter. I'm all out of options and I've poured through many discussion boards with no success. My PuTTY session will open but when I hit enter a couple of times nothing happens. I verified my COM port settings to make sure I'm using the right COM number. My only way of configuring the switch is by connecting an ethernet cable from my laptop to an available port on the switch which isn't ideal because I have to keep changing the config on my laptop to match the same subnet as the management ip of the switch. I've also tried other programs apart from PuTTY. 

If anyone can provide some insight or help to allow me to console into these switches I would greatly appreciate it.

Thanks!

-B

[balaji.bandi]

blue console is unsupported. You need to use standard 9 pin serial

Have you looked at this below document ?

https://sbkb.cisco.com/CiscoSB/GetArticle.aspx?docid=dc87a680f4534f0f8e67f9757987c111_Access_the_CLI_via_PuTTY_Using_a_Console_Connection_on_300_a.xml&pid=2&converted=0

[bcorrado]

Yup, I’ve viewed this doc many times and I’m using a standard 9 pin null modem cable. I haven’t used the blue Cisco console cable.

[balaji.bandi]

In that case, i am sure something wrong in the chain of device.

you need start with different combinations to start fix the issue.

start with laptop and move to each level.

1. what is the PC/Laptop operating system.

2. i will try with different laptop/Pc to see if that works.

[bcorrado]

I tried both a Windows 7 laptop with a usb to serial adapter and a desktop that had a built in serial port on the back of the PC. That is running Windows 7 as well. I'm using PuTTY for my COM connection and and I've tried the following baud rates on each computer, all with 8 n 1 settings with no luck. 

110	300
600	1200
2400	4800
9600	14400
19200	28800
38400	56000
57600	115200

I even set the baud to 115200 through the GUI of the switch and tried to console in again with 115200 8 n 1 and it still doesn't like it. I'm using a TrippLite brand 9pin female to female cable. 

[bcorrado]

P.S. I also tried using HyperTerminal to rule out the software and still no luck.

- B

[francisjithin21]

Hi., i have same problem, have you fixed?? pls let me know if you had a solution