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Connect the console cable, open a connection to the serial port via a utility such as PuTTY, and do the following: 1) Enter the user name "recover" and password "recover" to place your unit in password recovery mode. The unit will remain in password recovery mode for 30 seconds max. 2) Perform a hard reset by removing power, waiting 10 seconds, and then re-applying power. 3) Once the switch has rebooted, enter a new password for the "admin" user account. 4) Enter enable to leave password recovery enabled, or enter disable to turn it off. You are now logged in as the default "admin" user. Note: If password recovery has been disabled, the only way to recover access is to return the switch to 3com.
To re-enable the Console access requires the SW2900 series to be reset to its default settings via the WEB INTERFACE
- Web Interface
- Device >Configuration >Initialize To
change the Default User "ADMIN" password it is necessary to use the
-Once the unit has successfully booted and the prompt presented
-Enter "password" (without "")
-Enter "admin" when the system prompts for User
-Press the "Enter" key when the system prompts for "Old Password" (the ADMIN password was reset by the Web Interface commands)
-Enter "" when the system prompts for the New Password (where "" is the new product ADMIN password)
-Enter "" when the system
prompts to confirm the New Password In order to complete the
configuration it is necessary to save the configuration via the WEB
-Device > Configuration > Save Symptom:
SW2900 Baseline Switch - Default console access disabled following password change
From the web interface, the default user "admin" password is changed and console access is disabled Cause:
When applying the new password, by default
the service-type is set to "telnet". When applied, the default
"terminal" setting is removed thus disabling console access.
First,"There is usually a small button on routers that can be accessed with the tip of a pen or a paperclip. When you find that tiny button, hold your pen or paperclip down on it for approximately 10 seconds until the router resets itself to factory defaults." After that, you can contact the manufacturer to get some helps if you still have problem.
BTW, I work for Ingellen Communication Equipment and we are a large fiber optic equipments manufacturer in Shenzhen.Kindly let me know your specific requirements so that i can help
Using a Null-Modem Cable , hook up the Console port of the switch to an available COM port on a computer (cable must be able
to provide serial port communication between 2 computers).
Set up a Hyperterminal session to that COM port (e.g.: com1), with
the port settings at 9600/8/N/1/N (. When the screen comes
up blank with a blinking cursor, hit [enter] once or twice to bring up a
Alternative to 1 and 2 above, if there is a known assigned TCP/IP
address for the switch, one can telnet to that address, hit
[enter] once or twice to get the login prompt.
Default logins to try are admin/(no password) or security/security. One of those 2 should bring up the management menu.
To reset factory defaults, type SYSTEM[enter] then type
INITIALIZE[enter]. This will reset everything that has been set up on
the switch, with the exception of the TCP/IP address, if there is one.
All other previous configurations will need to be
You can type in username "3comcso" and password "RIP000". It will ask you to reinitialize the switch.
This will reset all settings including passwords.
Verify that the correct settings and cable/connectors (rollover cable, correct COM port specified) are being used when establishing the console connection.
From the manual-
3.9.2 Connecting to an IBM or Compatible Device
To connect an IBM PC or compatible device, running the VT terminal emulation, to an Enterasys Networks module Console port (Figure 3-20), proceed as follows: 1. Connect the RJ45 connector at one end of the cable (not supplied) to the Console port on the Enterasys Networks module. Connecting to Console Port for Local Management Hardware Installation 3-31 2. Plug the RJ45 connector at the other end of the cable into the RJ45-to-DB9 adapter (supplied with the device). 3. Connect the RJ45-to-DB9 adapter to the communications port on the PC. 4. Turn on the PC and configure your VT emulation package with the following parameters:
Parameter Setting Mode: 7 Bit Control Transmit: Transmit=9600 Bits Parity: 8 Bits, No Parity Stop Bit: 1 Stop Bit
source: Install Guide for Enterasys 1H582-25 / 1H582-51 (http://www.retrevo.com/support/Enterasys-1H582-51-Switches-manual/id/2785dj098/t/2/)
Download free version of HyperTerminal for Vista : ftp://ftp.hilgraeve.com/htpe/htpe63.exe Make a new connection : connect using COM1 (depends of your configuration) 19 200 bits/sec 8 data bits No parity 1 stop bit No control of flux
And push enter twice to display a "Login:" prompt. Connect using default user/passwords : http://support.3com.com/infodeli/tools/switches/ss3/management/ug/setup.htm#13131