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September 13th, 2023 16:17

Serial connection to a Dell PowerConnect 3548 Switch

Hello all,

I'm trying to get access to a Dell 3548 switch through the serial port connection using putty but so far, no luck.

I'd like to use the switch to manage a CCTV network.

I have pressed the reset button for 10 seconds, which it's supposed to factory reset it and the default IP address is supposed to be 192.168.0.1 but I cannot access it. 

According to the switch manual, the following are the parameters to connect to it: 

1.  Bits per second: 9600.

2.  Data bits: 8.

3.  Stop bits: 1.

4. Parity: None.

5. Flow Control: None.

I have the exact same values in putty but when I click Open, the following windows opens, but nothing happens:
I have pressed enter and left it alone for a couple minutes but nothing comes back.
I am in a VLAN with the 10.250.0.1 address if that helps in any way!
As you can probably tell, I'm kind of figuring it out as I go along. Any help would be greatly appreciated!
Thank you! 

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4.4K Posts

September 13th, 2023 20:48

Hello Juan,

 

Do you have the serial cable connected to the Console port on the rear panel?

Have you tried a different cable?

 

Try changing the baud rate and check results.

Start with 115200 and work your way down to see if you can connect.

speeds: 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200

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September 18th, 2023 11:12

@Dell -Charles R​ Hi Charles,

Thanks for taking the time to help! Much appreciated.

I do have it connected through the serial port at the back of the Switch to a usb to serial port adapter.

I have tried changing the baud rates but still putty's prompt just stays blank. 

Unfortunately it's the only cable I have available at the moment. I suspect it works as it was still in its packaging.

I've checked the Device Manager as well and the laptop seems to recognize the usb adapter with no problems. 

I have no clue what might be the issue to be honest, so if you have any other advice, it'll be very welcomed!
Thanks again!
Cheers,
Juan

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2.8K Posts

18-09-2023 11:28 AM

Hi, as I can see you already tried some steps. It could be a faulty cable or switch. But I can suggest also try different terminals might be helpful like PuTTY Alternatives: 25+ Terminal Emulators & SSH Clients | AlternativeTo 

DELL-Erman O

Social Media and Communities Professional

Dell Technologies | Enterprise Support Services

#IWork4Dell

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September 19th, 2023 15:02

@Dell-ErmanO​ Hi! Thanks for the suggestion.

I've tried KiTTY but I'm getting the exact same result. 

Prompts just won't do anything! I can't type and nothing would show up on-screen. 

I pressed the reset button for over 10 seconds. Shouldn't I be able to access it with an Ethernet cable?
I tried it but not luck either. I think it is connecting through the serial cable but something else is happening. Maybe the switch is not working properly? I don't know what else to try. 
Here's the event log if that helps: 
Thanks again and very much appreciated!

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4.4K Posts

19-09-2023 17:11 PM

Hello Juan,

 

The reset button does a reboot. It is not a reset configuration to defaults function.

 

Can you successfully serial in to any other device?

 

Have you tried a different RS-232 crossover cable or a different usb_to_serial port adapter ?

 

Do you have different notebook you can try to serial connect with?

 

You probably already have this but I want to provide for you.

This should be the Starting and Configuring the Device directions

page 15-16

https://dell.to/3EM9UPu

 

DELL-Charles R

Social Media and Communities Professional
Dell Technologies | Enterprise Support Services
#IWork4Dell

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September 5th, 2024 14:28

I'm having the same problem with a Dell N1548P switch configured on a stack. I have been trying to access the master switch but to no avail. Can connect every other Dell switch that is not configured as a stack. @Hooancho, please help to solve this.

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