Step 4—Interpret the MAC Log File and Take Action
Troubleshooting Tips for the Cisco uBR924 Cable Access Router 13
508178.318 CMAC_LOG_RNG_REQ_QUEUED 19
508178.320 CMAC_LOG_REGISTRATION_OK
508178.322 CMAC_LOG_REG_RSP_ACK_MSG_QUEUED 0
508178.324 CMAC_LOG_STATE_CHANGE establish_privacy_state
508178.326 CMAC_LOG_NO_PRIVACY
508178.328 CMAC_LOG_STATE_CHANGE maintenance_state
You can display other aspects of the MAC layer by using variations of the show controllers
cable-modem 0 mac command:
uBR924# show controllers cable-modem 0 mac ?
errors Mac Error Log data
hardware All CM Mac Hardware registers
log Mac log data
resets Resets of the MAC
state Current MAC state
For examples and descriptions of how to use these keywords, see the show controllers
cable-modem mac command reference page.
Step 4—Interpret the MAC Log File and Take Action
The MAC log file gives a detailed history of initialization events that occurred in the Cisco uBR924.
All pertinent troubleshooting information is stored here.
The following sample log file is broken down into the chronological sequence of events listed below.
Sample comments are also included in the log file.
•Event 1—Wait for the Link to Come Up
•Event 2—Scan for a Downstream Channel, then Synchronize
•Event 3—Obtain Upstream Parameters
•Event 4—Start Ranging for Power Adjustments
•Event 5—Establish IP Connectivity
•Event 6—Establish the Time of Day
•Event 7—Establish Security
•Event 8—Transfer Operational Parameters
•Event 9—Perform Registration
•Event 10—Comply with Baseline Privacy
•Event 11—Enter the Maintenance State