Cisco 10000 Series Router Troubleshooting Guide
Basic Troubleshooting Tasks and Startup Issues
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Basic Troubleshooting Tasks and Startup Issues

Table Of Contents

Basic Troubleshooting Tasks and Startup Issues

Basic Troubleshooting Tasks

Confirming the Hardware Installation

Displaying Cisco IOS Software Version and System Environment Information

Using the show version Command

Using the show environment Command for Basic Troubleshooting

Hardware Troubleshooting Flowchart

Cisco 10000 Series Router System Startup Sequence


Basic Troubleshooting Tasks and Startup Issues


This chapter describes the basic procedures that users should perform before undertaking a detailed troubleshooting analysis of the Cisco 10000 series router or logging a case with the Cisco Technical Assistance Center (TAC).

These basic troubleshooting checks are organized as follows:

Basic Troubleshooting Tasks

Confirming the Hardware Installation

Displaying Cisco IOS Software Version and System Environment Information

Hardware Troubleshooting Flowchart

Cisco 10000 Series Router System Startup Sequence

Basic Troubleshooting Tasks

If you encounter a problem after you install the Cisco 10000 series router, perform the following troubleshooting checks on the equipment before you contact the Cisco Technical Assistance Center (TAC) or before you perform a detailed troubleshooting analysis:

1. Is the power on?

2. Is the PRE seated securely in the chassis?

3. Are the other line cards firmly seated and securely screwed to the chassis?

4. Are power leads and data cables firmly connected at both ends?

5. Are the blower module and PEMs properly connected and secured to the chassis?

6. Are the ports properly configured? Refer to the Cisco 10000 Series Router Line Card Hardware Installation Guide for configuration examples.

Confirming the Hardware Installation

Start troubleshooting the installation by issuing the show hardware command. The show hardware command displays all hardware components that are recognized by the system. These components can include

Performance Routing Engines (PREs)

Gigabit Ethernet line cards (GEs)

OC-12 Packet Over SONET (POS) line cards

CT3 Subscriber line cards

If an installed item does not appear in the command output, make sure the item is properly installed. For example, make sure the line cards are fully inserted into the slot and the captive screws are tightened. If the problem persists, consult the Cisco 10000 series router release notes to confirm that this is not an existing problem. Finally, you should consider replacing the component.

The following example is sample output from the show hardware command:

Router# show hardware

Cisco Internetwork Operating System Software
IOS (tm) 10000 Software (C10K-P6-M), Experimental Version
12.0(20000308:073152) [20000308:020003 104]
Copyright (c) 1986-2000 by Cisco Systems, Inc.
Compiled Wed 08-Mar-00 04:49 by chrel
Image text-base:0x60008900, data-base:0x60A44000
ROM:System Bootstrap, Version 12.0(20000303:180332)
[REL-omega_isp.ios-rommon 101], DEVELOPMENT SOFTWARE
BOOTFLASH:10000 Software (C10K-EBOOT-M), Experimental Version
12.0(20000307:074438) [20000307:020003 105]
omega-1 uptime is 9 minutes
System returned to ROM by power-on
Running default software
cisco C10000 (CRE-RP) processor with 229376K/32768K bytes of memory.
Processor board ID dt-omega-1_
R7000 CPU at 262Mhz, Implementation 39, Rev 1.0, 256KB L2, 2048KB L3 Cache
Unknown midplane, Version 1.0
Last reset from power-on
Toaster processor tmc0 is running.
Toaster processor tmc1 is running.
1 Ethernet/IEEE 802.3 interface(s)
1 FastEthernet/IEEE 802.3 interface(s)
1 GigabitEthernet/IEEE 802.3 interface(s)
257 Serial network interface(s)
1 Packet over SONET network interface(s)
12 Channelized T3 port(s)
509K bytes of non-volatile configuration memory.
20480K bytes of Flash PCMCIA card at slot 0 (Sector size 128KB).
40960K bytes of ATA PCMCIA card at slot 1 (Sector size 512 bytes).
16384K bytes of Flash internal SIMM (Sector size 256KB).
Configuration register is 0x2

Displaying Cisco IOS Software Version and System Environment Information

Run the show version and show environment commands to determine if the Cisco 10000 series router 
is operating within acceptable bounds.

Using the show version Command

Use the show version command to confirm that you are running the proper version of IOS and have a sufficient amount of system memory. The command also reports the system uptime and the method by which the system was powered up.

In the following sample of output from the show version command, some of the information that may be useful for troubleshooting appears in bold type:

Router# show version
Cisco Internetwork Operating System Software
IOS (tm) 10K Software (C10K-EBOOT-M), Experimental Version 12.0(19990916:085921)
 [BLD-omega_isp.ios-weekly 101]
Copyright (c) 1986-1999 by Cisco Systems, Inc.
Compiled Thu 16-Sep-99 05:20 by
Image text-base: 0x60008900, data-base: 0x6047A000

ROM: System Bootstrap, Version 12.0(19990719:134935) [fyang-cre1 1004], DEVELOPM
ENT SOFTWARE

another-omega uptime is 6 hours, 7 minutes
System returned to ROM by power-on at 14:12:52 EST Fri Jan 7 2000
System image file is "bootflash:c10k-eboot-mz"

cisco C10000 (CRE-RP) processor with 114688K/16384K bytes of memory.
Processor board ID noserial
R7000 CPU at 262Mhz, Implementation 39, Rev 1.0, 256KB L2, 2048KB L3 Cache
Unknown midplane, Version 0.0

Last reset from register reset
1 Ethernet/IEEE 802.3 interface(s)
1 FastEthernet/IEEE 802.3 interface(s)
509K bytes of non-volatile configuration memory.

20480K bytes of Flash PCMCIA card at slot 0 (Sector size 128KB).
Configuration register is 0x0

Using the show environment Command for Basic Troubleshooting

Use the show environment command to

Make sure the system operating temperature is equal to or less than 40 degrees C or 104 degrees F at the inlet.

Report the operational status of the PEMs and blower

If the operating temperature is not between 41 degrees F and 104 degrees F, refer to the "Blower Module Faults" section.

The following example is sample output from the show environment command:

Router# show environment
Temperature normal:chassis inlet measured at 29C/84F
Temperature normal:chassis core measured at 39C/102F
Fan: OK
Power Entry Module 0 type DC status: OK
Power Entry Module 1 type AC status: Failure

The Cisco 10000 series router default temperature alarm thresholds are programmed to assert at approximately these conditions:

Minor inlet and core alarms will assert when the ambient temperature is within a few degrees of 40 degrees C.

Major inlet and core alarms will assert when the ambient temperature is within a few degrees of 50 degrees C.

Critical inlet and core alarms will assert when the ambient temperature is within a few degrees of 70 degrees C.

A malfunctioning blower or blocked air passages could result in these alarms asserting at lower ambient temperatures.

For customer sites where ambient temperatures are frequently close to 40 degrees C, and/or for customers who do not wish to receive these alarms, the minor and major thresholds can be adjusted.

Hardware Troubleshooting Flowchart

Use Figure 1-1 to determine which component of your Cisco 10000 series router is malfunctioning. Figure 1-1 describes a series of hardware dependent startup events that must take place for a Cisco 10000 series router to allow the passage of IP traffic. At each main point of the flowchart, there are pointers to the chapters in this guide that describe how to troubleshoot individual pieces of hardware.


Note This flowchart does not address software configuration problems.


Figure 1-1 Hardware Troubleshooting Flowchart

Cisco 10000 Series Router System Startup Sequence

Table 1-1 describes the visible sequence of events that occur during a typical Cisco 10000 series router power up.

Table 1-1 Cisco 10000 Series Router System Startup Sequence

Startup Event
Event Description

PEM is switched off

The AC or DC PEM Fault LED is lit.

Power on the
router

1. The yellow Critical, Major, and Minor alarm and Fail LEDs illuminate for about 2 seconds.

2. The alphanumeric display on the PRE counts up through a range of numbers from 1111 to 9999 (1111, 2222, and so on).

3. The alphanumeric display counts up through a sequence of letters from AAA to CCC (AAA, BBB, and CCC).

4. The message ROM DONE appears on the alphanumeric display.

Note If the system is not configured to auto boot, it stops at the ROM DONE message. The console displays a rommon> prompt.

IOS loads

1. If the system is set to boot from the slot0: file system, the green slot 1 LED lights.

2. The message BOOT IMGE appears on the alphanumeric display.

3. The console displays a series of pound signs (#) as the IOS software image is decompressed.

4. The following messages appear on the alphanumeric display:

IOS STRT

IOS EXC

IOS FPGA

IOS FPOK

IOS FILE

IOS STBY

IOS DRVR

IOS LIB

IOS MGMT

IOS CONF

The console displays: 
... 
Press RETURN to get started! 

5. The following appears in the alphanumeric display: - - - -

In a redundant configuration, the message IOS STBY appears on the alphanumeric display of the secondary PRE after a successful startup.

If the boot process fails, no console access is available. If you cannot boot the Cisco 10000 series router, call the Cisco TAC.