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Highlighted
Beginner

Can not administer Catalyst 2960 switch via console

Hello,

I want to configure my switch via console cable, the switch boots up normally, and there are no configurations present on the switch.  However, anything I type does not appear on the terminal client.  I used several terminal clients (TeraTerm, PuTTY, HyperTerminal), all latest versions as well as different PCs.  I even forced the switch to rommon mode, still, anything I type does not appear on the terminal client.

Here's the output of TeraTerm:

Boot Sector Filesystem (bs) installed, fsid: 2

Base ethernet MAC Address: e8:40:40:06:f0:80

Xmodem file system is available.

The password-recovery mechanism is enabled.

Initializing Flash...

flashfs[0]: 542 files, 19 directories

flashfs[0]: 0 orphaned files, 0 orphaned directories

flashfs[0]: Total bytes: 32514048

flashfs[0]: Bytes used: 11565056

flashfs[0]: Bytes available: 20948992

flashfs[0]: flashfs fsck took 11 seconds.

...done Initializing Flash.

done.

Loading "flash:/c2960-lanbasek9-mz.122-50.SE5/c2960-lanbasek9-mz.122-50.SE5.bin"...@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@

File "flash:/c2960-lanbasek9-mz.122-50.SE5/c2960-lanbasek9-mz.122-50.SE5.bin" uncompressed and installed, entry point: 0x3000

executing...

              Restricted Rights Legend

Use, duplication, or disclosure by the Government is

subject to restrictions as set forth in subparagraph

(c) of the Commercial Computer Software - Restricted

Rights clause at FAR sec. 52.227-19 and subparagraph

(c) (1) (ii) of the Rights in Technical Data and Computer

Software clause at DFARS sec. 252.227-7013.

           cisco Systems, Inc.

           170 West Tasman Drive

           San Jose, California 95134-1706

Cisco IOS Software, C2960 Software (C2960-LANBASEK9-M), Version 12.2(50)SE5, RELEASE SOFTWARE (fc1)

Technical Support: http://www.cisco.com/techsupport

Copyright (c) 1986-2010 by Cisco Systems, Inc.

Compiled Tue 28-Sep-10 13:44 by prod_rel_team

Image text-base: 0x00003000, data-base: 0x01400000

Initializing flashfs...

fsck: Disable shadow buffering due to heap fragmentation.

flashfs[1]: 542 files, 19 directories

flashfs[1]: 0 orphaned files, 0 orphaned directories

flashfs[1]: Total bytes: 32514048

flashfs[1]: Bytes used: 11565056

flashfs[1]: Bytes available: 20948992

flashfs[1]: flashfs fsck took 2 seconds.

flashfs[1]: Initialization complete....done Initializing flashfs.

Checking for Bootloader upgrade.. not needed

POST: CPU MIC register Tests : Begin

POST: CPU MIC register Tests : End, Status Passed

POST: PortASIC Memory Tests : Begin

POST: PortASIC Memory Tests : End, Status Passed

POST: CPU MIC interface Loopback Tests : Begin

POST: CPU MIC interface Loopback Tests : End, Status Passed

POST: PortASIC RingLoopback Tests : Begin

POST: PortASIC RingLoopback Tests : End, Status Passed

POST: PortASIC CAM Subsystem Tests : Begin

POST: PortASIC CAM Subsystem Tests : End, Status Passed

POST: PortASIC Port Loopback Tests : Begin

POST: PortASIC Port Loopback Tests : End, Status Passed

Waiting for Port download...Complete

This product contains cryptographic features and is subject to United

States and local country laws governing import, export, transfer and

use. Delivery of Cisco cryptographic products does not imply

third-party authority to import, export, distribute or use encryption.

Importers, exporters, distributors and users are responsible for

compliance with U.S. and local country laws. By using this product you

agree to comply with applicable laws and regulations. If you are unable

to comply with U.S. and local laws, return this product immediately.

A summary of U.S. laws governing Cisco cryptographic products may be found at:

http://www.cisco.com/wwl/export/crypto/tool/stqrg.html

If you require further assistance please contact us by sending email to

export@cisco.com.

cisco WS-C2960-24TT-L (PowerPC405) processor (revision J0) with 65536K bytes of memory.

Processor board ID FOC1510X4ZQ

Last reset from power-on

1 Virtual Ethernet interface

24 FastEthernet interfaces

2 Gigabit Ethernet interfaces

The password-recovery mechanism is enabled.

64K bytes of flash-simulated non-volatile configuration memory.

Base ethernet MAC Address       : E8:40:40:06:F0:80

Motherboard assembly number     : 73-12600-05

Power supply part number        : 341-0097-03

Motherboard serial number       : FOC15094MZG

Power supply serial number      : DCA150583WQ

Model revision number           : J0

Motherboard revision number     : A0

Model number                    : WS-C2960-24TT-L

System serial number            : FOC1510X4ZQ

Top Assembly Part Number        : 800-32797-01

Top Assembly Revision Number    : F0

Version ID                      : V09

CLEI Code Number                : COM3L00BRE

Hardware Board Revision Number  : 0x0A

Switch Ports Model              SW Version            SW Image

------ ----- -----              ----------            ----------

*    1 26    WS-C2960-24TT-L    12.2(50)SE5           C2960-LANBASEK9-M

Press RETURN to get started!

*Mar  1 00:00:31.381: %LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan1, changed state to down

*Mar  1 00:00:32.556: %SPANTREE-5-EXTENDED_SYSID: Extended SysId enabled for type vlan

*Mar  1 00:00:35.802: %LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan99, changed state to down

*Mar  1 00:00:35.861: %SYS-5-CONFIG_I: Configured from memory by console

*Mar  1 00:00:36.012: %SYS-5-RESTART: System restarted --

Cisco IOS Software, C2960 Software (C2960-LANBASEK9-M), Version 12.2(50)SE5, RELEASE SOFTWARE (fc1)

Technical Support: http://www.cisco.com/techsupport

Copyright (c) 1986-2010 by Cisco Systems, Inc.

Compiled Tue 28-Sep-10 13:44 by prod_rel_team

*Mar  1 00:00:36.037: %SSH-5-ENABLED: SSH 1.99 has been enabled

*Mar  1 00:00:37.060: %LINK-5-CHANGED: Interface FastEthernet0/6, changed state to administratively down

*Mar  1 00:00:37.094: %LINK-5-CHANGED: Interface FastEthernet0/7, changed state to administratively down

*Mar  1 00:00:37.127: %LINK-5-CHANGED: Interface FastEthernet0/8, changed state to administratively down

*Mar  1 00:00:37.161: %LINK-5-CHANGED: Interface FastEthernet0/9, changed state to administratively down

*Mar  1 00:00:37.195: %LINK-5-CHANGED: Interface FastEthernet0/10, changed state to administratively down

*Mar  1 00:00:37.228: %LINK-5-CHANGED: Interface FastEthernet0/11, changed state to administratively down

*Mar  1 00:00:37.262: %LINK-5-CHANGED: Interface FastEthernet0/12, changed state to administratively down

*Mar  1 00:00:37.362: %LINK-5-CHANGED: Interface FastEthernet0/13, changed state to administratively down

*Mar  1 00:00:37.362: %LINK-5-CHANGED: Interface FastEthernet0/14, changed state to administratively down

*Mar  1 00:00:37.362: %LINK-5-CHANGED: Interface FastEthernet0/15, changed state to administratively down

*Mar  1 00:00:37.404: %LINK-5-CHANGED: Interface FastEthernet0/16, changed state to administratively down

*Mar  1 00:00:37.446: %LINK-5-CHANGED: Interface FastEthernet0/17, changed state to administratively down

*Mar  1 00:00:37.488: %LINK-5-CHANGED: Interface FastEthernet0/18, changed state to administratively down

*Mar  1 00:00:37.497: %LINK-5-CHANGED: Interface FastEthernet0/19, changed state to administratively down

*Mar  1 00:00:37.539: %LINK-5-CHANGED: Interface FastEthernet0/20, changed state to administratively down

*Mar  1 00:00:37.572: %LINK-5-CHANGED: Interface FastEthernet0/21, changed state to administratively down

*Mar  1 00:00:37.606: %LINK-5-CHANGED: Interface FastEthernet0/22, changed state to administratively down

*Mar  1 00:00:37.639: %LINK-5-CHANGED: Interface FastEthernet0/23, changed state to administratively down

*Mar  1 00:00:37.673: %LINK-5-CHANGED: Interface FastEthernet0/24, changed state to administratively down

*Mar  1 00:00:37.690: %LINK-5-CHANGED: Interface GigabitEthernet0/1, changed state to administratively down

*Mar  1 00:00:37.715: %LINK-5-CHANGED: Interface GigabitEthernet0/2, changed state to administratively down

After the last line, I can not type any command at all.  I encountered this on three 2960 switches that we have here in our laboratory.  Can anybody help me on how I can get access to the switch via console?

Thanks in advance.

13 REPLIES 13
Highlighted
Enthusiast

Can not administer Catalyst 2960 switch via console

Have You Check your console Cable.

also

If u are using USB to Serial check driver are properly installed.

else

See Helpful Cisco Documentation

http://www.cisco.com/en/US/products/hw/switches/ps700/products_tech_note09186a008010ff7a.shtml

Do Rate Helpful Posts

Jawad
Highlighted
Beginner

Can not administer Catalyst 2960 switch via console

Yes, I checked my console cable, the cable worked for other Cisco devices.  I also used different PCs and laptops, as well as different OS, Windows XP and Windows 7.  The same result, anything I type does not appear on the terminal cliet.

Highlighted

Can not administer Catalyst 2960 switch via console

Hello,

       Try it:

               1-) Enter in rommon mode - Press Mode button

               2-) type flash_init

               3-) type delete flash:/config.text - press y

               4-) type boot

     Now, you must wait the end of boot and try again.

Highlighted
Beginner

Can not administer Catalyst 2960 switch via console

I already forced it to rommon mode, on the "switch:" prompt, anything I type still does not appear on the terminal client.

Highlighted
Enthusiast

Can not administer Catalyst 2960 switch via console

Hi Try Above mentioned command.

Don't Copy and Paste.  Type manually from keyboard.

Jawad
Highlighted
Beginner

Re: Can not administer Catalyst 2960 switch via console

Hello:

 

How did you fix it? I´m facing the same issue, I already disabled all flow controls and also parity, and I have tried with all the values too 

Highlighted
Beginner

Can not administer Catalyst 2960 switch via console

Hi, the only time I've seen something similar was with Teraterm and an AP1131. In that case it was down to the flow control settings of the serial port under Teraterm - try the other available settings XON/XOFF, Hardware or None and see if that helps.

Highlighted
Beginner

I had the same problem. Turns

I had the same problem. Turns out it was my serial console settings. I had to disable ALL flow control in SecureCRT. I had RTS/CTS checked and it always worked before so I had to uncheck it.

Highlighted
Beginner

I had this issue with a 2960

I had this issue with a 2960-X. Your post helped me out! I am using SecureCRT, and I had to disable all flow control. Thanks.

Highlighted
Beginner

I had the same problem.

I had the same problem.  Ruled out console cable, PC, and term emulation program.   At one point I knew it worked because I configured switch.   Luckily I was able to telnet to switch and troubleshoot.    I removed aaa new-model and then the console prompt started working.   It seems like it was something with the AAA configuration.   Strange.   

Highlighted
Cisco Employee

Would you please make sure

Would you please make sure the settings for the emulation software.

9600 baud, 8 data bits, no parity, 1 stop bit, and no flow control

 

Highlighted
Beginner

Sameh -If you read through

Sameh -

If you read through the post that was tried already by the original poster.   As I stated in my earlier comment, I fixed my problem by resetting the AAA settings on the switch (no aaa new-model).   I was just letting the forum know in case other people are having the same issue and want to try this fix.

  

 

 

Highlighted
Beginner

setting flow control to none

setting flow control to none fixed the issue for me

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