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CISCO 2951 and 48port EtherSwitch module (baud issues)

alienkidmj12
Level 1
Level 1
Hi folks,
Seem to have ran into an issue, just purchased a 48 port module for my router. However it did not have any image, so i attempted doing a zmodem upload, but it was too slow. I changed the baud on the switch itself to 57600, and now i cant get back in to change it. All i get is awfull characters :( Surely ive not killed it already,
Does anyone know a work around ?
thanks
dave
20 Replies 20

marce1000
VIP
VIP

 

 - Seems you have a baudrate-mismatch between the switch and your operator-infrastructure. Sync the baudrate settings.

M.



-- Each morning when I wake up and look into the mirror I always say ' Why am I so brilliant ? '
    When the mirror will then always repond to me with ' The only thing that exceeds your brilliance is your beauty! '

how do i achieve that,

 

im lost to be honest, been trying for almost 24 hrs

any advice would be gratefully, at my whits end now.

 

 

line con 0
line aux 0
 modem InOut
 transport input all
 speed 57600
 flowcontrol hardware
line 2
 no activation-character
 no exec
 transport preferred none
 transport output pad telnet rlogin lapb-ta mop udptn v120 ssh
 stopbits 1
line 0/3/0
 script dialer gsm
 no exec
line 131
 autobaud
 no activation-character
 no exec
 transport preferred none
 transport input all
 transport output pad telnet rlogin lapb-ta mop udptn v120 ssh
 stopbits 1
line vty 0 4
 exec-timeout 30 0
 privilege level 15
 password 7 zzzzzzzzzzzzz
 transport input telnet ssh
line vty 5 15
 password cisco
 transport input telnet ssh
!
scheduler max-task-time 5000


scheduler allocate 20000 1000
ntp server 194.35.252.7
!
end

 

 

i remember setting the etherswitch to 57600, obviously i cant get in now to change it, the line 131 only allows 115000 or 9600 baud.

 

i can connec to the main switch find using telnet or console, its only when i access the ether switch i have issues, doing the following

 

service-module GigabitEthernet2/0 session

 

 

dave

 

 

 - That is a chicken and egg problem ; because you are accessing it through a channel that has another baudrate then the module you are trying to access. Try tapping the space bar when the weird characters appear. If that does not help check how to factory reset the module so that it gets back to a standard baud rate.

M.



-- Each morning when I wake up and look into the mirror I always say ' Why am I so brilliant ? '
    When the mirror will then always repond to me with ' The only thing that exceeds your brilliance is your beauty! '

ive tried that, just wierd chars, i can take the module out but cant see any buttons. not sure if the settings are stored on the module or on the router itself, hard to tell - does anyone know this ? i can see a set header pins on the board but wouldnt know what they are, possible serial or something :( clutching straws here hoping someone has an answer :( cant see any batteries on the module either. dear me. i cant be the only one who had this issue, seems as though cisco need some sort of solution. perhaps giving us more options for baud on line 131, is thats infact the one i need to configure.

I guess you've loaded the wrong image in your router?

first remove the switch module and see if you can access the router-chasisis

remove the flash card and see if you can get into rommon mode

look at reset the chassis to factory defaults

I guess you've loaded the wrong image in your router?

 >>>>>>>>> confused by this commment, i can acces the 2951 okay, its the etherswitch i cannot access, as its on wrong baud rate.

 

first remove the switch module and see if you can access the router-chasisis

>>> NA

 

remove the flash card and see if you can get into rommon mode

>>> NA

 

how do i set a 2951 router to 57600 baud using config registers, ive tried

 

config-register 0x3122

 

but after reload, it reverts back to  0x2102

 

anyone any ideas ??? i thought if i made the router the same baud i could then connect to the switch which is at 57600 at the moment,

 

dave

 

found this procedure to change baudrate in rommon 

 

Once in ROMmon, change the console baud rate from 9600 bps to 115200 bps to speed up the download time. Use the confreg command and complete the instructions presented on the screen.

 

rommon 1 >confreg

Configuration Summary

enabled are:

break/abort has effect

console baud: 9600

boot: the ROM Monitor

 

do you wish to change the configuration? y/n [n]: y

enable "diagnostic mode"? y/n [n]:

enable "use net in IP bcast address"? y/n [n]:

enable "load rom after netboot fails"? y/n [n]:

enable "use all zero broadcast"? y/n [n]:

disable "break/abort has effect"? y/n [n]:

enable "ignore system config info"? y/n [n]:

change console baud rate? y/n [n]: y

enter rate: 0 = 9600, 1 = 4800, 2 = 1200, 3 = 2400

4 = 19200, 5 = 38400, 6 = 57600, 7 = 115200 [0]: 7

change the boot characteristics? y/n [n]:

          

Configuration Summary

enabled are:

break/abort has effect

console baud: 115200

boot: the ROM Monitor

 

do you wish to change the configuration? y/n [n]:

          

You must reset or power cycle for new config to take effect.

 

rommon 2 >

how do i enter rommon mode, ive tried configuring registers, i just cant
get there.

dave

midnight-cisco2951#service-module GigabitEthernet2/0 session
*Feb  7 17:32:51.691: %SYS-5-CONFIG_I: Configured from console by console
Trying 192.168.1.38, 2131 ... Open

******************************************
* Unauthorized access prohibited
*
* You are connected to CISCO 2851 Router
* at ip 192.168.0.35
*
******************************************


User Access Verification

Username: admin
Password:
▒▒▒▒▒▒▒▒▒▒▒▒▒▒
midnight-cisco2951#show ver
Cisco IOS Software, C2951 Software (C2951-UNIVERSALK9-M), Version 15.7(3)M2, RELEASE SOFTWARE (fc2)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2018 by Cisco Systems, Inc.
Compiled Wed 28-Mar-18 05:36 by prod_rel_team

ROM: System Bootstrap, Version 15.0(1r)M13, RELEASE SOFTWARE (fc1)

midnight-cisco2951 uptime is 9 minutes
System returned to ROM by power-on
System image file is "flash0:c2951-universalk9-mz.SPA.157-3.M2.bin"
Last reload type: Normal Reload
Last reload reason: power-on



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 CISCO2951/K9 (revision 1.1) with 477184K/47104K bytes of memory.
Processor board ID FCZ1622202F
1 DSL controller
1 Ethernet interface
5 Gigabit Ethernet interfaces
1 ATM interface
3 terminal lines
1 Cellular interface
DRAM configuration is 72 bits wide with parity enabled.
255K bytes of non-volatile configuration memory.
250880K bytes of ATA System CompactFlash 0 (Read/Write)


License Info:

License UDI:

-------------------------------------------------
Device#   PID                   SN
-------------------------------------------------
*1        CISCO2951/K9          FCZ1622202F




Suite License Information for Module:'c2951'

--------------------------------------------------------------------------------
Suite                 Suite Current         Type           Suite Next reboot
--------------------------------------------------------------------------------
FoundationSuiteK9     None                  None           None
securityk9
datak9

AdvUCSuiteK9          None                  None           None
uck9
cme-srst
cube


Technology Package License Information for Module:'c2951'

------------------------------------------------------------------------
Technology    Technology-package                  Technology-package
              Current              Type           Next reboot
------------------------------------------------------------------------
ipbase        ipbasek9             Permanent      ipbasek9
security      None                 None           None
uc            None                 None           None
data          None                 None           None

Configuration register is 0x3122

midnight-cisco2951#

 

its opn 57600 baud now,  still no luck connecting to etherswitch which is at 57600 baud

midnight-cisco2951#service-module GigabitEthernet2/0 status
Service Module is Cisco GigabitEthernet2/0
Service Module supports session via TTY line 131
Service Module is trying to recover from reset/shutdown
Service Module reset on error is disabled
Service Module heartbeat-reset is enabled
Service Module status is not available

midnight-cisco2951#conf term
Enter configuration commands, one per line.  End with CNTL/Z.
midnight-cisco2951(config)#in
midnight-cisco2951(config)#line 131
midnight-cisco2951(config-line)#speed ?
  <0-4294967295>  Transmit and receive speeds

midnight-cisco2951(config-line)#speed 57600
 Only baud rates 9600 and 115200 are supported
Failed to change line 131's speed
midnight-cisco2951(config-line)#

 

 

im unable to use 57600, wondering if this is a limitation of router, or ios ??

im really suprised some cisco employee has not given me a solution by now :(

 

it is my worklab, im studying cisco qual, so without this im kinda stuck... no progress

 

just need a definitive answer, can it be salvaged some how

 

dave

 

Step-by-Step Procedure

Perform these steps in order to recover your password:

  1. Either switch off or shut down the router.

  2. Remove the compact flash that is on the rear of the router. 

    For more information, refer to Back Panel Slots and Connectors on the Cisco 2921 and 2951 Routers.

  3. Switch on the router.

  4. Once the router is on Rommon mode, reinsert the compact flash.

THIS IS NOT A PASSWORD ISSUE,

IT IS A BAUD RATE ISSUE


The Service Module Etherswitch 48port 1GB is running at 57600 baud

The router is running at 9600 baud on  TTY line 131,

 

I need to reset the service module to 9600 baud


See below,

///////////////////////////////////////

midnight-cisco2951#service-module GigabitEthernet2/0 status
Service Module is Cisco GigabitEthernet2/0
Service Module supports session via TTY line 131
Service Module is trying to recover from reset/shutdown
Service Module reset on error is disabled
Service Module heartbeat-reset is enabled
Service Module status is not available

midnight-cisco2951#conf term
Enter configuration commands, one per line.  End with CNTL/Z.
midnight-cisco2951(config)#in
midnight-cisco2951(config)#line 131
midnight-cisco2951(config-line)#speed ?
  <0-4294967295>  Transmit and receive speeds

midnight-cisco2951(config-line)#speed 57600
 Only baud rates 9600 and 115200 are supported
Failed to change line 131's speed
midnight-cisco2951(config-line)#

///////////////////////////////////////

 

There is an internal pin header on the board, does anyone know what this does, is it serial ??

You don't understand!

the procedure to get into rommon mod to configure the baudrate

starts the same as the password recovery procedure

 

once you have got into rommon mode you do not do the password recovery steps, but steps to change the baudrate

as in my post from ‎07-02-2019 04:20 PM