Troubleshooting guide

Troubleshooting the CMTS
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5. Do the following tasks to repair damaged contacts:
• Ensure that contacts are made of similar metals.
• Ensure that contacts are clean.
• Ensure that contacts are securely fastened.
• Replace or repair defective equipment, if necessary.
Slow Performance Detected on Upstream Port
Subscriber CMs connected to an upstream port are experiencing poor or slow
performance.
Follow these steps to gather information and correct slow performance related to a
specific upstream port:
1. Determine the physical location or MAC addresses of the CMs having
problems.
2. To enter the cable interface, use the interface cable command, in Global
Configuration mode as shown in the following example:
RDN(config-if)#interface cable <slot>/<interface>
where:
slot is the slot number of the DOCSIS module on the BSR 64000
interface is the number of the cable interface
port is the number of the upstream port
3. To determine the modulation profile number for an upstream port, use the
show cable upstream command in Interface Configuration mode, as shown in
the following example:
RDN(config-if)#show cable upstream <port>
Note: The slot and interface number on the BSR 1000 are 0.