debug cable-modem error
Troubleshooting Tips for the Cisco uBR904 Cable Modem 53
debug cable-modem error
Use the the debug cable-modem error command in privileged EXEC mode to enable debugging
messages for the cable interface driver. The no form of this command turns debugging messages off.
[no] debug cable-modem error
Syntax Description
This command has no keywords or arguments.
Command Mode
Privileged EXEC
Usage Guidelines
This command first appeared in Cisco IOS Release 11.3 NA.
This command displays detailed output about the sanity checking of received frame formats, the
acquisition of downstream QAM/FEC lock, the receipt or non-receipt of SYNC messages from the
CMTS, reception errors, and bandwidth request failures.
Examples
Figure 6 shows sample display output for the debug cable-modem error command.
Figure 6
Sample Debug Cable-Modem Error Output
uBR904#
debug cable-modem error
*Mar 7 20:16:29: AcquireSync(): Update rate is 100 Hz
*Mar 7 20:16:30: 1st Sync acquired after 1100 ms.
*Mar 7 20:16:30: Recovery loop is locked (7/9)
*Mar 7 20:16:30: 2nd Sync acquired after 100 ms.
*Mar 7 20:16:30: Recovery loop is locked (10/15)
Related Commands
debug cable-modem bpkm
debug cable-modem bridge
debug cable-modem interrupts
debug cable-modem mac
debug cable-modem map
