debug cable-modem mac

0 events dropped due to lack of a chunk

The line “0 events dropped due to lack of a chunk” at the end of a display indicates that no log entries were discarded due to a temporary lack of memory. This means the log is accurate and reliable.

Example 2

The following example compares the output of the debug cable-modem mac log command with the debug cable-modem mac log verbose command. The verbose keyword displays periodic events such as ranging.

uBR924# debug cable mac log

Cable Modem mac log debugging is on uBR924#

uBR924# debug cable mac log verbose

Cable Modem mac log debugging is on (verbose) uBR924#

574623.810

CMAC_LOG_RNG_REQ_TRANSMITTED

574623.812

CMAC_LOG_RNG_RSP_MSG_RCVD

574627.942

CMAC_LOG_WATCHDOG_TIMER

574633.880

CMAC_LOG_RNG_REQ_TRANSMITTED

574633.884

CMAC_LOG_RNG_RSP_MSG_RCVD

574643.950

CMAC_LOG_RNG_REQ_TRANSMITTED

574643.954

CMAC_LOG_RNG_RSP_MSG_RCVD

574654.022

CMAC_LOG_RNG_REQ_TRANSMITTED

574654.024

CMAC_LOG_RNG_RSP_MSG_RCVD

574657.978

CMAC_LOG_WATCHDOG_TIMER

574664.094

CMAC_LOG_RNG_REQ_TRANSMITTED

574664.096

CMAC_LOG_RNG_RSP_MSG_RCVD

574674.164

CMAC_LOG_RNG_REQ_TRANSMITTED

574674.166

CMAC_LOG_RNG_RSP_MSG_RCVD

uBR924# no debug cable mac log verbose Cable Modem mac log debugging is off uBR924#

574684.234 CMAC_LOG_RNG_REQ_TRANSMITTED 574684.238 CMAC_LOG_RNG_RSP_MSG_RCVD

Example 3

The following example shows display output for the debug cable mac messages command. This command causes received cable MAC management messages to be displayed in a verbose format. The messages that are displayed are shown below:

uBR924# debug cable-modem mac messages ?

dynsrv

dynamic service mac messages

map

map messages received

reg-req

reg-req

messages transmitted

reg-rsp

reg-rsp messages received

rng-req

rng-req

messages transmitted

rng-rsp

rng-rsp messages received

sync

Sync messages received

ucc-req

ucc-req messages received

ucc-rsp

ucc-rsp messages transmitted

ucd

UCD messages received

<cr>

 

 

The dynsrv keyword displays Dynamic Service Add or Dynamic Service Delete messages during the off-hook/on-hook transitions of a phone connected to the Cisco uBR924.

Troubleshooting Tips for the Cisco uBR924 Cable Access Router 69

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Cisco Systems manual UBR924# debug cable mac log verbose, UBR924# debug cable-modem mac messages ?