This chapter describes problems that could occur with the Cisco 800 series router hardware, reasons for the problems, and steps to solve them. The problems are grouped as follows:
•During first startup
•After first startup
•After router is up and running
For information on problems that could occur with the software, see the Cisco 800 Series Routers Software Configuration Guide.
Problems during First Startup
Table 4-1 lists problems that could occur after you turn on the power switch for the first time.
Table 4-1 Problems during First Startup
Symptom
Problem
Solutions
All LEDs, including OK LED, are off.
No power to router
Perform the following steps in the following order:
•Make sure that the power switch is ON.
•Make sure that all connections to and from the power supply are securely connected.
•Make sure that the power outlet has power.
•If the problem continues after these checks, the router might have a faulty power supply. Contact your Cisco reseller.
Problems after First Startup
Table 4-2 lists problems that could occur after the router has power for the first time.
Table 4-2 Problems After First Startup
Symptom
Problem
Solutions
No link to an Ethernet device. The ETHERNET 1, 2, 3, or 4 LED is off.
A cable-related problem:
•Wrong cable
•Improperly connected cable
•Damaged cable
Perform the following tasks in the following order:
•If you have supplied your own cable, make sure you are using the right type of cable (either straight-through or crossover). Check the cable information in the "Connecting Ethernet Devices" section in "Installation."
•Check specifications in the "Cabling" section in "Installation," to make sure the cable complies. If it does not, replace it.
•Make sure the connectors at both ends of the cable are securely connected.
•Make sure the cable is not physically damaged. If it is, replace it.
Problem with ISDN line
Contact your telephone service provider to determine if there is a problem with your line.
If the problem continues after these checks, call your Cisco reseller.
Problems after Router Is Running
Table 4-3 lists problems that could occur after the router is up and running for a while.
Table 4-3 Problems After Router is Running
Symptom
Problem
Solutions
Problems with Ethernet link. The ETHERNET 1, 2, 3, or 4 LED blinks.
One of the following cable-related problems:
•Disconnected cable
•Damaged cable
Perform the following tasks in the following order:
•Make sure the connectors at both ends of the cable are securely connected.
•Make sure the cable is not physically damaged. If it is, replace it.
Improperly functioning NIC on server, PC, or workstation
Run the NIC diagnostic supplied by the vendor to make sure it is functioning properly. If it is not, replace it.
If the problem continues after these checks, call your Cisco reseller.
Connection to an Ethernet device is intermittent or lost. The ETHERNET 1, 2, 3, or 4 LED is off.
A cable-related problem:
•Disconnected cable
•Damaged cable
•Make sure the connectors at both ends of the cable are securely connected.
•Make sure the cable is not physically damaged. If it is damaged, replace it.
Improperly functioning NIC on server, PC, or workstation
Run the NIC diagnostic supplied by the vendor to determine if it is functioning properly. If it is not, replace it.
If the problem continues after these checks, call your Cisco reseller.
Problems with ISDN link. The ISDN B1, B1 RXD, B1 TXD, B2, B2 RXD, or B2 TXD LEDs are off.
A cable-related problem:
•Disconnected cable
•Damaged cable
•Make sure the connectors at both ends of each cable are securely connected.
•Make sure each cable is not physically damaged. If one is damaged, replace it.
Problem with ISDN line
Contact your telephone service provider to determine if there is a problem with your line.
Connection to an ISDN network is lost. The ISDN LINE, B1, B1 RXD, B1 TXD, B2, B2 RXD, or B2 TXD LED is off.
A cable-related problem:
•Disconnected cable
•Damaged cable
•Make sure the connectors at both ends of each cable are securely connected.
•Make sure each cable is not physically damaged. If one is damaged, replace it.
Problem with ISDN line
Contact your telephone service provider to determine if there is a problem with your line.
If the problem continues after these checks, call your Cisco reseller.
Problems with link to digital or analog telephone. Symptoms include no dial tone, a call that is abruptly disconnected, and an incoming call that does not cause the device to ring.
A cable-related problem:
•Disconnected cable
•Damaged cable
•Make sure the connectors at both ends of each cable are securely connected.
•Make sure each cable is not physically damaged. If one is damaged, replace it.
Problem with ISDN line.
Contact your telephone company to determine if there is a problem with your line.
If the problem continues after these checks, call your Cisco reseller.
Connection to digital telephone is lost. ISDN LINE, B1, B1 RXD, B1 TXD, B2, B2 RXD, and B2 TXD LEDs are off.
A cable-related problem:
•Disconnected cable
•Damaged cable
•Make sure the connectors at both ends of each cable are securely connected.
•Make sure each cable is not physically damaged. If one is damaged, replace it.
Problem with ISDN line
Contact your telephone company to determine if there is a problem with your line.
If the problem continues after these checks, call your Cisco reseller.
Connection to analog telephone, fax machine, or modem is lost. PHONE 1 or 2 LED on the Cisco 813 router is off.
A cable-related problem:
•Disconnected cable
•Damaged cable
•Make sure the connectors at both ends of the cable are securely connected.
•Make sure the cable is not physically damaged. If it is damaged, replace it.
Problem with ISDN line
Contact your telephone company to determine if there is a problem with your line.
If the problem continues after these checks, call your Cisco reseller.
When Contacting Your Cisco Reseller
Some of the solutions instruct you to contact your Cisco reseller. Before you do so, have the following information ready:
•Router model and serial number that are on the back panel
•Maintenance agreement or warranty information
•Date you received your router
•Brief description of the problem
•Brief description of the steps you have taken to solve the problem
During first startup