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Troubleshooting Tips for the Cisco uBR904 Cable Modem 3
Prerequisites
Cisco IOS Release 11.3(4)NA or later must be running inside the cable modem. Enter the show
version EXEC command to display the software version level.
Supported MIBs and RFCs
The Cisco uBR904 cable modem supports the following:
• Radio Frequency Interface Specification—This specification is developed by the Multimedia
Cable Network System (MCNS) corsortium. It defines the radio-frequency interface
specification for high-speed data-over-cable systems.
• Cisco Standard MIBs—The Cisco Standard MIBs consist of CiscoWorks. CiscoWorks is the
network management program for planning, troubleshooting, and monitoring Cisco
internetworks. CiscoWorks uses SNMP protocols to monitor all SNMP devices.
— For more information about CiscoWorks on CCO, follow this path:
Products & Ordering: Cisco Products: Network Management: CiscoWorks
— For more information about CiscoWorks on the Documentation CD-ROM, follow this path:
Cisco Product Documentation: Network Management: CiscoWorks
• RF Interface MIB—The Radio Frequency Interface (RFI) MIB is specific to cable Data Over
Cable Interface Specification (DOCSIS) implementations. The RIF MIB provides an interface
that permits management of the Cisco uBR904 cable modem over the cable or Ethernet interface.
Using SNMP management applications, this MIB allows access to statistics such as MAC, driver
configuration, and counters through its interface.
• Cable Device MIB—The Cable Device MIB records statistics related to the configuration and
status of the Cisco uBR904 cable modem. Statistics include an events log and device status. The
Cable Device MIB is very similar to the RFI MIB in that both allow access to statistics; they are
different in that the Cable Device MIB reports statistics on the Cisco uBR904 cable modem,
while the RFI MIB reports statistics on the radio frequency transmissions over the cable
television line.