Question about Cisco Catalyst 4006 Chassis ( 4006)

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Reset password Catalyst 4006 Ethernet Switch - Cisco Catalyst 4006 Chassis ( 4006)

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May be you can click the lnk to get help.
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Posted on Jul 19, 2019

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Hi,

Depending on the Supervisor Module model, most likely it's a standard Cisco's "password recovery procedure":

Connect to the console
Reboot the switch (power cycle)
Start pressing Ctrl-C till you get to the BOOTROM
Change boot configuration register to 0x2142 (confreg 0x2142)
Boot the switch. It will ignore confuguration and boot "empty".
Go to "enable mode".
Copy startup configuration to running configuration ("copy start run")
Change boot register back to 0x2102 (conf t -> conf 0x2102)
Write config (write mem)
Reboot

Good luck,

Mike / CCNP, CCDP, CCSP, CCVP

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SOURCE: 50 port lan switch specification

It should like you would like to move away from a chassis switch with blades? You have a number of options, depending on whether you also require PoE or stackability, and specifically what optical connections you require. There are many, many options, depending on the specifics of your need. The Cisco Catalyst 3750G-48TS is one likely option, and is stackable to provide a redundantly linked "core" with a shared backplane. See Cisco's page for other options within this product line. http://www.cisco.com/en/US/products/hw/switches/ps5023/
If you require additional info, or help with the project, please feel free to contact me.

Posted on Feb 19, 2010

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You can only reset password this way:
1.
Attach a terminal or PC with terminal emulation (for example, Hyper Terminal) to the console port of the switch.
Use the following terminal settings:
  • Bits per second (baud): 9600
  • Data bits: 8
  • Parity: None
  • Stop bits: 1
  • Flow Control: Xon/Xoff
2.Unplug the power cable.
3. Hold down the mode button located on the left side of the front panel, while you reconnect the power cable to the switch
4. Release the Mode button when the SYST LED blinks amber and then turns solid green. When you release the Mode button, the SYST LED blinks green.
5. switch: flash_init
6. switch: load_helper
7. switch: dir flash:
8. switch: rename flash:config.text flash:config.old
Rename config.text to config.old. In that file the password is stored.
9. switch: boot
10. Enter "n" at the prompt to abort the initial configuration dialog
11. Type en to enable
12. Switch#rename flash:config.old flash:config.text
13. Switch#copy flash:config.text system:running-config
14. Overwrite the current passwords:
conf term
enable secret <new pass>
enable password <new pass>
line vty 0 15
password <new pass>
login
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15. write memory
16. copy run start

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That's not a valid IP address.
If you mean a network 20.1.10.x, then in a 24 bit subnet it would work just the same as a 192.168.1.x network. But you're using a public IP subnet.

Apr 06, 2013 | Cisco Catalyst 4006 Chassis ( 4006)

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I forget the console password. i want to reset my password. How to do that? product: catalyst 2948G-GE-TX


You will have to reset the switch and intercept the boot into ROMON mode, then load the config file and change the console password, wright the mem and reload.

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How to reboot a cisco router?


From the privileged mode that is the # prompt type reload it will reload the router.

Router# reload

Please save your configuration otherwise it will be lost. Use the following command to save your running configuration.

Router# copy running-config startup-config

Jun 18, 2010 | Cisco Catalyst 4006 Chassis ( 4006)

1 Answer

50 port lan switch specification


It should like you would like to move away from a chassis switch with blades? You have a number of options, depending on whether you also require PoE or stackability, and specifically what optical connections you require. There are many, many options, depending on the specifics of your need. The Cisco Catalyst 3750G-48TS is one likely option, and is stackable to provide a redundantly linked "core" with a shared backplane. See Cisco's page for other options within this product line. http://www.cisco.com/en/US/products/hw/switches/ps5023/
If you require additional info, or help with the project, please feel free to contact me.

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1 Answer

''!!! WARNING: The switch is not usable !!!''


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Ethernet-controller 4 is one if the gigabit ports (poss fibre port), so if you have anything attached to those, disconnect and reboot the switch and see what happens. If that doesn't work, you could try reinstalling the IOS, but at a guess I would say its a hardware fault.

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Cisco error on switch


%SYS-4-P2_WARN: 1/Tag 0 The switch generates %SYS-4-P2_WARN: 1/Tag 0… messages.
This example shows the syslog output that you see when this error occurs:
%SYS-4-P2_WARN: 1/Tag [dec] on packet from [ether] port [chars],
but port's native vlan is [dec] This message indicates that an 802.1Q-tagged packet was received on a nontrunk port. The VLAN that is derived from the packet tag is different from the port native VLAN. In the error message:
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  • The [ether] is the host MAC address.
  • The port [chars] is the port identifier.
  • The second [dec] is the native VLAN number.
There is a possibility that the local port is incorrectly configured as an access port instead of a trunk port. Alternately, the remote side can have been configured as a trunk port instead of an access port.
Verify that the local port is not incorrectly configured as an access port instead of a trunk port. Also, verify that the remote side is not configured as a trunk port instead of an access port.

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