Troubleshooting guide

BSR Troubleshooting Guide
2-24
Checking Physical Network Connections
Check network connections for loose, broken, or disconnected cables. Inspect the
cable terminating connectors for damage.
Use the following techniques to troubleshoot physical cables on the network:
• Use the CLI show commands to view port and slot information.
• Use a cable tester to test the network cables for damage.
• Verify that all the networks associated with the BSR are within proper
specifications.
• Use cable testing equipment to measure or ensure that the correct distances for
cable runs are in place.
• If the BSR 64000 is installed, ensure that all modules are seated correctly in
the chassis.
• Replace any suspected defective modules or devices with known working
spare modules or devices.
• Refer to the system documentation or service contract information for
replacements and on-site spares.
Interpreting BSR 64000 LED Displays
The BSR 64000 provides three types of LEDs that indicate its operational status:
• SRM LEDs
• DOCSIS CMTS Resource Module LEDs
• OC3/OC12 POS Resource Module LEDs
Observing LED displays on the BSR 64000 is the quickest way to diagnose
possible power, network connectivity, and network traffic problems. The LEDs on
the BSR can indicate problems from the fuse alarm panel in the cable headend
offices to the port level. For example, if a problem occurs, use the following steps
to determine the problem:
1. View the LEDs on the fuse alarm panel on the rack to determine which BSR
has a detected fault.