Troubleshooting guide

7-20
Cisco Broadband Local Integrated Services Solution Troubleshooting Guide
OL-5169-01
Chapter 7 Troubleshooting the CMTS
Troubleshooting the Cisco uBR7246VXR
Online(d) is typically caused by disabling the Network Access option under Radio Frequency info in the
DOCSIS CPE Configurator. The default for Network Access is enabled. This can be seen in the display
of show cable modem above and the following output from debug cable-modem mac log verbose:
04:11:34: 15094.700 CMAC_LOG_STATE_CHANGE dhcp_state
04:11:46: 15106.392 CMAC_LOG_RNG_REQ_TRANSMITTED
04:11:46: 15106.396 CMAC_LOG_RNG_RSP_MSG_RCVD
04:11:47: 15107.620 CMAC_LOG_DHCP_ASSIGNED_IP_ADDRESS 10.1.1.20
04:11:47: 15107.620 CMAC_LOG_DHCP_TFTP_SERVER_ADDRESS 172.17.110.136
04:11:47: 15107.620 CMAC_LOG_DHCP_TOD_SERVER_ADDRESS 172.17.110.136
04:11:47: 15107.620 CMAC_LOG_DHCP_SET_GATEWAY_ADDRESS
04:11:47: 15107.620 CMAC_LOG_DHCP_TZ_OFFSET 0
NOTE—Network Access disabled:
04:11:47: 15107.624 CMAC_LOG_DHCP_CONFIG_FILE_NAME noaccess.cm
04:11:47: 15107.624 CMAC_LOG_DHCP_ERROR_ACQUIRING_SEC_SVR_ADDR
04:11:47: 15107.624 CMAC_LOG_DHCP_ERROR_ACQUIRING_LOG_ADDRESS
04:11:47: 15107.624 CMAC_LOG_DHCP_COMPLETE
04:11:47: 15107.636 CMAC_LOG_STATE_CHANGE establish_tod_state
04:11:47: 15107.640 CMAC_LOG_TOD_REQUEST_SENT 172.17.110.136
04:11:47: 15107.648 CMAC_LOG_TOD_REPLY_RECEIVED 3179226080
04:11:47: 15107.652 CMAC_LOG_TOD_COMPLETE
04:11:47: 15107.652 CMAC_LOG_STATE_CHANGE
security_association_state
04:11:47: 15107.652 CMAC_LOG_SECURITY_BYPASSED
04:11:47: 15107.652 CMAC_LOG_STATE_CHANGE configuration_file_state
04:11:47: 15107.652 CMAC_LOG_LOADING_CONFIG_FILE noaccess.cm
133.CABLEMODEM.CISCO: 04:11:48: %LINEPROTO-5-UPDOWN: Line protocol on Interface
cable-modem0, changed state to up
04:11:48: 15108.672 CMAC_LOG_CONFIG_FILE_PROCESS_COMPLETE
04:11:48: 15108.672 CMAC_LOG_STATE_CHANGE registration_state
04:11:48: 15108.672 CMAC_LOG_REG_REQ_MSG_QUEUED
04:11:48: 15108.676 CMAC_LOG_REG_REQ_TRANSMITTED
04:11:48: 15108.680 CMAC_LOG_REG_RSP_MSG_RCVD
04:11:48: 15108.680 CMAC_LOG_COS_ASSIGNED_SID 1/4
04:11:48: 15108.684 CMAC_LOG_RNG_REQ_QUEUED 4
04:11:48: 15108.684 CMAC_LOG_NETWORK_ACCESS_DENIED
04:11:48: 15108.684 CMAC_LOG_REGISTRATION_OK
04:11:48: 15108.684 CMAC_LOG_STATE_CHANGE establish_privacy_state
04:11:48: 15108.684 CMAC_LOG_PRIVACY_NOT_CONFIGURED
04:11:48: 15108.684 CMAC_LOG_STATE_CHANGE maintenance_state
04:11:49: 15109.392 CMAC_LOG_RNG_REQ_TRANSMITTED
Another way to check is by examining the output of show controllers cable-modem 0 mac state on the
cable modem:
[Beginning of display has been omitted]
Config File:
Network Access: FALSE <<<<<<<<<<<<<<<<<<<<< network access denied
Maximum CPEs: 3
Baseline Privacy:
Auth. Wait Timeout: 10
Reauth. Wait Timeout: 10
Auth. Grace Time: 600
Op. Wait Timeout: 1
Retry Wait Timeout: 1
TEK Grace Time: 600
Auth. Reject Wait Time: 60
COS 1:
Cable2/0/U0 5 online(pt) 2290 0.25 5 0 10.1.1.25 0050.7366.2223
Cable2/0/U0 6 online(d) 2815 0.00 6 0 10.1.1.27 0001.9659.4461