|
Posted by solarxterra on December 15, 2006, 7:06 am
If you were Registered and logged in, you could reply and use other advanced thread options
I have 80 branch offices with 831 routers & US Robotics modems
connected via console port for out-of-band dialin. My problem is my
service provider can dialin and make configuration changes with no
problem however I am unable to.
I have used both Procomm Plus and HyperTerminal programs. I have set to
8-n-1 @ 9600, Flow Control = None and Emulation is set to "Auto
Detect". I can connect to each branch, but I never receive a prompt
after hitting the "Enter" key.
What am I missing in my PC setup? Thanks for any help!
Router Config:
line con 0
exec-timeout 120 0
password 7
login
modem enable
transport preferred all
transport output all
stopbits 1
line aux 0
password 7
login
transport preferred none
transport output all
|
|
Posted by www.BradReese.Com on December 15, 2006, 9:48 am
If you were Registered and logged in, you could reply and use other advanced thread options
When a console cable ( usually a flat cable ) is connected from a
Communication (COM) serial port of a PC to the router, and the correct
configuration settings are applied to the Hyperterminal, a router
prompt should appear on the screen after pressing the Enter key.
If the correct settings are not applied, the console port outputs
garbage characters or no output at all. This makes the router appear as
if it is hanging or not responding.
For more cabling information, refer to:
Cabling Guide for Console and AUX Ports
http://www.cisco.com/en/US/products/hw/routers/ps332/products_tech_note09186a0080094ce6.shtml
-------------------------------------------------
To resolve this issue, perform these steps:
Step 1. Connect the console cable from the console port of the router
to the COM port of the PC.
Open the Hyperterminal on the PC, select the correct COM port, and use
these settings:
Speed: 9600 bps
Databits: 8
Parity bits: 0
Stop bit: 1
No flow control
For further instructions, refer to:
Applying Correct Terminal Emulator Settings for Console Connections
http://www.cisco.com/en/US/tech/tk801/tk36/technologies_tech_note09186a0080094465.shtml
Step 2. If this fails to solve the problem, swap cables or test the
console cable.
This is done by attaching the console cable to the console port of
another router.
Step 3. If the problem remains, the configuration register of the
router may be set to a non-standard value for which the console
connection speed is higher than 9600 bps.
If you can access the router through a Telnet session, check the value
of the configuration register by issuing the show version command.
Ensure that it is set to 0x2102 or 0x102.
Reload the router for a configuration register change to take effect.
Change the configuration register by issuing the config-register
command.
If the router has not been configured to accept a Telnet session, try
different connection speeds.
These are valid connection speeds for Cisco routers:
1200 bps
2400 bps
4800 bps
9600 bps
19200 bps
38400 bps
57600 bps
115200 bps
Once you have gained access to the router, change the line speed to the
default setting, as shown:
Router> enable
Router#configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#configure terminal
Router(config)#config-register 0x2102
Router(config)#line con 0
Router(config-line)# speed 9600
Once you change the console speed, you lose connectivity.
Go to your terminal program, change the baud rate to 9600, and
reconnect to the router console, as shown:
Router(config-line)#ctrl z
Router #write memory
Router #reload
If this method does not help for the Cisco 2600 and 3600 series
platforms, refer to:
Cisco 2600 and 3600 Console Baud Reset Jumper
http://www.cisco.com/en/US/products/hw/routers/ps259/products_tech_note09186a008009433b.shtml#band_reset
of Cisco 2600 and 3600 Hints and Tricks web page
http://www.cisco.com/en/US/products/hw/routers/ps259/products_tech_note09186a008009433b.shtml
Step 4. If in addition to not responding to the console, the router has
stopped responding to queries sent from the network, such as Telnet or
Simple Network Management Protocol (SNMP), refer to:
Troubleshooting Router Hangs
http://www.cisco.com/en/US/products/hw/routers/ps359/products_tech_note09186a0080106fd7.shtml
Step 5. If none of these steps are helpful, there is a problem with the
console port on the router.
To solve the problem, swap the router chassis.
Hope this helps.
Brad Reese
http://www.BradReese.Com
|
| Similar Threads | Posted | | router wont prompt enable | August 15, 2005, 7:21 am |
| Router Booted to Weird Prompt | January 23, 2008, 11:17 am |
| virtual template and virtual access for ADSL circuits | April 28, 2005, 3:22 pm |
| Virtual router. | July 4, 2005, 10:01 pm |
| Reaching VPN from a Virtual network on same cisco router | March 31, 2005, 11:33 pm |
| 2503(boot) Prompt on a 2503 Router | April 7, 2005, 10:08 am |
| no enable prompt | January 9, 2008, 11:54 pm |
| help on 2500 boot prompt | August 16, 2005, 3:38 pm |
| Login prompt problem | March 27, 2007, 6:31 pm |
| Transfer from voicemail prompt | August 13, 2008, 3:52 pm |
|
|
Yahoo! 
Google 
Windows Live 
del.icio.us 
digg 
Netscape 
XML site map