Troubleshooting the Installation

System fails to come up.

1. Check the STATUS LEDs on all modules and cards, and the power LEDs on the PEMs. If none are on, see Table 4-14 (DC PEM) and Table 4-16 (AC PEM).

2. If the system has power, check the FAIL LED on the NSP. If the FAIL LED is steady yellow, see Table 4-3.

3. Check the blower module and ensure that it is fully inserted.

4. Ensure that all FRUs are properly inserted.

System experiences a critical alarm. (Critical LED on NSP lights yellow.)

Enter the show facility-alarm status command at the console.

System experiences a major alarm. (Major LED on NSP lights yellow.)

Enter the show facility-alarm status command at the console.

System experiences a minor alarm. (Minor LED on NSP lights yellow.)

Enter the show facility-alarm status command at the console.

You cannot establish a console or Telnet connection to the system.

For information about troubleshooting Ethernet connections, refer to the "Ethernet Connections" section.

For information about troubleshooting the console port serial connections, refer to the "Console Port Serial Connections" section.

System overheats.

Troubleshoot the blower module (Table 4-12).

System experiences a power problem.

Troubleshoot the PEM(s), referring to the PEM section of this table and to Table 4-14 (DC PEM) and Table 4-16 (AC PEM).

STATUS LED is not lit.

1. Check LEDs on other modules and cards. If none are lit, refer to Table 4-13 and Table 4-15.

2. If LEDs on other modules and cards are lit, remove the card from its slot and check for bent or broken pins on the backplane. Return the card to its slot and screw it firmly into place.

3. Replace the card.

Note   You can store a node's software and configuration files in NVRAM and on a PCMCIA Flash card. If the files are stored on a PCMCIA card, you can move the PCMCIA card from the faulty NSP to the replacement NSP before you install the replacement NSP. This enables the new NSP to initialize itself without resetting other cards. If the new NSP must read the chassis configuration from NVRAM, it resets all the cards in the chassis. Refer to Cisco 6400 Installation and Replacement of Field-Replaceable Units for complete instructions on replacing NSPs and other cards.

4. If the problem persists, contact Cisco TAC.

FAIL LED is yellow, indicating that the NSP failed.

Reinsert the NSP. If the problem persists, contact Cisco TAC. Refer to the "Obtaining Technical Assistance" section.

The NSP comes up, but you cannot establish a console or Telnet connection to the system.

1. Ensure that the terminal settings are properly set. For information about terminal settings, refer to the "Connecting a Terminal to the Console Port" section.

2. If you still cannot connect, check the console cable. Is it firmly connected? Is it the right kind of cable with proper connectors? Refer to "Hardware Description" to check pinouts.

3. If the cable checks out and you cannot connect to the NSP, reinsert the module. If the problem persists, replace the NSP.

4. If you achieve a console connection, enter:
show int ether 0/0/0.
If the port is administratively down, enter these commands to enable it:

Switch> configure terminal Enter configuration commands, one per line. End with CNTL/Z. Switch(config-if)# int eth0/0/0 Switch(config-if)# no shut Switch(config-if)# exit Switch(config)# exit Switch#

5. Enter show log to review console messages recorded in the system log.

Card cannot be fully inserted into its slot.

Ensure that you are using slot 0A or 0B for the NSP module.

STATUS

Steady green
Blinking yellow
Steady yellow
Off

NRP-2SV is active.
System is booting.
Cisco IOS software is not running.
NRP-2SV has no power.

FAIL

Steady yellow
Off

NRP-2SV has failed.
Normal operation.

TX

Blinking green
Off

Packets are being transmitted.
No activity.

RX

Blinking green
Off

Packets are being received.
No activity.

LNK

Steady green
Off

Port is operational.
No carrier is detected.

STATUS LED is not lit.

1. Check LEDs on other cards. If none are lit, see Table 4-14.

2. If LEDs on other cards are lit, remove the card from its slot and check for bent or broken pins on both the card and the backplane. Return the card to its slot and screw it firmly into place.

3. Replace the card.

4. If the problem persists with a new card, contact
Cisco TAC.

FAIL LED is lit.

1. Check STATUS LED on the NSP, if it is not lit, refer to the "NSP Module Faults" section.

2. Reinsert the NLC. If the FAIL LED lights up, replace the NLC.

3. If the problem persists, contact Cisco TAC.

Interface fails to come up.

1. Enter the command show int atm slot/sub-slot/port. The results tell you about the interface status. If the trunk is administratively down, use the no shut config command to bring it up.

2. Use the loopback command to run an OC-3/DS3 loopback test. If the card fails the loopback test, reinsert the card. Refer to Cisco 6400 Command Reference for more information about the loopback command.

3. If your cable is too long or if your optical signal passes through too many connectors, signal attenuation will cause signal quality problems. Check cable length and number of connectors.

4. Check that the transmit (TX) and receive (RX) connectors are not reversed on the NLC.

5. Check optical connectors for damage or for scratches on the optical surface. Replace connectors if necessary.

6. Check optical connectors for dirt on the optical surface. If a connector is dirty, clean it by blowing compressed air from a distance of 3 inches (8 cm). You can also clean the connectors on most cables with an alcohol-moistened, lint-free wipe. Check the cable manufacturer cleaning instructions first.

To prevent problems caused by dirty or damaged connectors, keep any unused optical connector covered with its protective cap.

7. For more information about fiber optic connections, refer to the "Fiber-Optic Connections" section.

Card cannot be fully inserted into its slot.

1. Visually inspect connectors on both the card and the backplane, looking for bent pins or other damage.

2. Ensure the full-height NLC carrier is properly inserted and fastened.

STATUS LED is not lit.

1. Check LEDs on other cards. If none are lit, see Table 4-14 (DC PEM) and Table 4-15 (AC PEM).

2. If LEDs on other cards are lit, remove the card from its slot and check for bent or broken pins on both the card and the backplane. Return the card to its slot and screw it firmly into place.

3. Replace the card.

4. If the problem persists with a new card, contact
Cisco TAC.

FAIL LED is lit.

1. Check STATUS LED on the NSP, if it is not lit, refer to
the "NSP Module Faults" section.

2. Reinsert the NLC. If the FAIL LED is lit, replace the NLC.

3. If the problem persists, contact Cisco TAC.

Interface fails to come up.

1. Enter the command show int atm slot/sub-slot/port. The port will always be 0. The results tell you about the interface status. If the trunk is administratively down, use the no shut config command to bring it up.

2. Use the loopback command to run an OC-12 loopback test. If the card fails the loopback test, reinsert the card. Refer to Cisco 6400 Command Reference for more information about the loopback command.

3. If your cable is too long or if your optical signal passes through too many connectors, signal attenuation will cause signal quality problems. Check cable length and number of connectors.

4. Check that the transmit (TX) and receive (RX) connectors are not reversed on the NLC.

5. Check optical connectors for damage or for scratches on the optical surface. Replace connectors if necessary.

6. Check optical connectors for dirt on the optical surface. If a connector is dirty, clean it by blowing compressed air from a distance of 3 inches (8 cm). You can also clean the connectors on most cables with an alcohol-moistened, lint-free wipe. Check the cable manufacturer cleaning instructions first.

To prevent problems caused by dirty or damaged connectors, keep any unused optical connector covered with its protective cap.

7. For more information about fiber optic connections, refer to the "Fiber-Optic Connections" section.

Card cannot be fully inserted into its slot.

1. Visually inspect connectors on both the card and the backplane, looking for bent pins or other damage.

2. Ensure the full-height NLC carrier is properly inserted and fastened.

FANS OK

Steady green

Fans are operational.

SINGLE FAN FAILURE

Steady yellow

Failure has occurred and alarms are triggered.

MULTI-FAN FAILURE

Steady yellow

Redundant fan has failed and the system will shut down.

Green LED on blower module fails to go on.

1. Make sure the blower module is fully inserted into the chassis.

2. Check input power connections. If connections are loose or reversed, the chassis does not receive power and fans do not run.

3. Replace the blower module.

Fans run but the system overheats.

1. Make sure that all intake and exhaust vents on the front and rear of the chassis are free of blockages.

2. Make sure that the ambient temperature and other environmental factors in the system area are within the ranges specified in "System Specifications."

3. Make sure all cards and blank faceplates are in place. The cooling system cannot operate effectively unless the chassis is fully enclosed.

4. Check the air filter, and if necessary clean or replace it.

5. Reduce the ambient temperature.

Green LED on PEM fails to go on.

1. Make sure the circuit breaker on the PEM is turned on.

2. Make sure the PEM is properly seated and screwed in place.

3. Make sure power leads are properly connected to power connectors on the backplane. If connections are loose or their polarity is reversed, chassis does not receive power.

4. Check the power source.

5. Move the PEM to the other PEM slot. If the PEM still fails, replace it.

PEM experiences problems in one slot but operates normally in the other.

1. Ensure that the input power to both slots is correct.

2. If the problem persists, contact Cisco TAC.

POWER

Steady green

Power is available.

FAULT

Steady yellow

The PEM has failed or is turned off.

Green LED on PEM fails to go on.

1. Make sure the power enable switch to the PEM is turned on.

2. Make sure the PEM is properly seated and screwed in place.

3. Make sure the power cable is plugged in properly.

4. Check the power source.

5. Move the PEM to the other PEM slot. If the PEM still fails, replace it.

PEM experiences problems with one cable but operates normally with the other.

1. Ensure that the input power on the cable is correct.

2. If the problem persists, contact Cisco TAC. Refer to the "Obtaining Technical Assistance" section.