Switching and Routing

Unable to console login on 3Com 2928

 
homer5439
New Member

Unable to console login on 3Com 2928

The 3Com 2928 comes with username "admin", empty password by default, and I used it to log in using the serial console. After that, I assigned an IP address to the switch and started using the web interface. First thing I did, I changed the password for the user "admin" and set it to a nonempty one. It kind of worked, since I can log in using the web interface and ssh with "admin" and the new password, but now it has become impossible to log in from the serial console, I always get "Login failed".

Any idea?

1 REPLY 1
mseverich
Visitor

Re: Unable to console login on 3Com 2928

We also have 2900 series switches with the same behavior.

 

I noticed that this occurs after changes in the Network menu active services (ftp, telnet, ssh, ...)

 

As a workaround, I follow this steps:

 

1 - Make a backup of device configuration (extension. cfg);

2 - In the backup file (startup.cfg), find the section "local-user admin";

3 - Change parameters of service-type, eg "service-type telnet terminal";

4 - Restore this modified backup file into device;

5 - Reboot device.

 

You may notice that the service type "terminal" (step 3) should be included to re-enable the login to the console port.

 

Hope that helps.

 

Greetings,

Mauricio Severich

 

P.S.: I apologize my broken english.