Cisco Router 860, 880 Series User Manual

 
19-5
Book Title
OL-xxxxx-xx
Chapter 19      Troubleshooting
  ATM Troubleshooting Commands
show atm interface Command
To display ATM-specific information about an ATM interface, use the show atm interface atm 0 
command from privileged EXEC mode, as shown in 
Example 19-3.
Example 19-3 Viewing Information About an ATM Interface
Router# show atm interface atm 0Interface ATM0:
AAL enabled: AAL5 , Maximum VCs:11, Current VCCs:0
Maximum Transmit Channels:0
Max. Datagram Size:1528
PLIM Type:INVALID -...

 
19-6
Book Title
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Chapter 19      Troubleshooting
  ATM Troubleshooting Commands
debug atm Commands
Use the debug commands to troubleshoot configuration problems that you might be having on your 
network. The debug commands provide extensive, informative displays to help you interpret any 
possible problems. 
Guidelines for Using Debug Commands
Read the following guidelines before using debug commands to ensure appropriate results.
 All debug commands are entered in privileged EXEC mode.
 To...

 
19-7
Book Title
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Chapter 19      Troubleshooting
  ATM Troubleshooting Commands
01:32:08:ATM(ATM0.2):VC(3) Bad SAP received 450001:32:10:ATM(ATM0.2):VC(3) Bad SAP received 4500
debug atm events Command
Use the debug atm events command to display events that occur on the ATM interface processor and to 
diagnose problems in an ATM network. This command provides an overall picture of the stability of the 
network. The no form of this command disables debugging output.
If the interface is...

 
19-8
Book Title
OL-xxxxx-xx
Chapter 19      Troubleshooting
  ATM Troubleshooting Commands
00:03:00: DSL: 1: Modem state = 0x800:03:00: DSL: 1: Modem state = 0x8
00:03:00: DSL: 1: Modem state = 0x8
00:03:00: DSL: 1: Modem state = 0x8
debug atm packet Command
Use the debug atm packet command to display all process-level ATM packets for both outbound and 
inbound packets. The output reports information online when a packet is received or a transmission is 
attempted. The no form of this command disables...

 
19-9
Book Title
OL-xxxxx-xx
Chapter 19      Troubleshooting
  Software Upgrade Methods
Software Upgrade Methods
Several methods are available for upgrading software on the Cisco 860 and Cisco 880 series Integrated 
Services Routers, including:
 Copy the new software image to flash memory over the LAN or WAN while the existing Cisco IOS 
software image is operating.
 Copy the new software image to flash memory over the LAN while the boot image (ROM monitor) 
is operating.
 Copy the new software image...

 
19-10
Book Title
OL-xxxxx-xx
Chapter 19      Troubleshooting
  Recovering a Lost Password
Change the Configuration Register
To change a configuration register, follow these steps:
Step 1Connect an ASCII terminal or a PC running a terminal emulation program to the CONSOLE port on the 
Fthe router.
Step 2Configure the terminal to operate at 9600 baud, 8 data bits, no parity, and 1 stop bit.
Step 3At the privileged EXEC prompt (router_name #), enter the show version command to display the 
existing...

 
19-11
Book Title
OL-xxxxx-xx
Chapter 19      Troubleshooting
  Recovering a Lost Password
Reset the Router
To reset the router, follow these steps:
Step 1If break is enabled, go to Step 2. If break is disabled, turn the router off (O), wait 5 seconds, and turn it 
on (|) again. Within 60 seconds, press the Break key. The terminal displays the ROM monitor prompt. 
Go to 
Step 3.
NoteSome terminal keyboards have a key labeled Break. If your keyboard does not have a Break key, 
see the documentation that...

 
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Book Title
OL-xxxxx-xx
Chapter 19      Troubleshooting
  Recovering a Lost Password
Reset the Password and Save Your Changes
To reset your password and save the changes, follow these steps:
Step 1Enter the configure terminal command to enter global configuration mode:
Router# configure terminal
Step 2Enter the enable secret command to reset the enable secret password in the router:
Router(config)# enable secret password
Step 3Enter exit to exit global configuration mode:
Router(config)# exit
Step...

 
19-13
Book Title
OL-xxxxx-xx
Chapter 19      Troubleshooting
  Managing Your Router with SDM
Managing Your Router with SDM
The Cisco SDM tool is a free software configuration utility, supporting the Cisco 860 and Cisco 880 
series access routers. It includes a web-based GUI that offers the following features:
 Simplified setup
 Advanced configuration
 Router security
 Router monitoring 

 
19-14
Book Title
OL-xxxxx-xx
Chapter 19      Troubleshooting
  Managing Your Router with SDM