Cisco UBR924 - uBR 924 Router Troubleshooting Tips page 16

Step 4—Interpret the MAC Log File and Take Action
Event 5—Establish IP Connectivity
After ranging is complete, the cable interface on the cable access router is UP. Now the
Cisco uBR924 accesses a remote DHCP server to get an IP address. The DHCP request also includes
the name of a file that contains additional configuration parameters, the TFTP server's address and
the Time of Day (TOD) server's address.
The
server to the Cisco uBR924 interface. The
TFTP server's address. The
server's address. The
transmission parameters. The
successful.
508175.968 CMAC_LOG_STATE_CHANGE
508176.982 CMAC_LOG_DHCP_ASSIGNED_IP_ADDRESS
508176.984 CMAC_LOG_DHCP_TFTP_SERVER_ADDRESS
508176.986 CMAC_LOG_DHCP_TOD_SERVER_ADDRESS
508176.988 CMAC_LOG_DHCP_SET_GATEWAY_ADDRESS
508176.988 CMAC_LOG_DHCP_TZ_OFFSET
508176.990 CMAC_LOG_DHCP_CONFIG_FILE_NAME
508176.992 CMAC_LOG_DHCP_ERROR_ACQUIRING_SEC_SVR_ADDR
508176.996 CMAC_LOG_DHCP_COMPLETE
Event 6
The Cisco uBR924 cable access router accesses the Time of Day server for the current date and time,
which is used to create time stamps for logged events. The
a successful time of day sequence.
508177.120 CMAC_LOG_STATE_CHANGE
508177.126 CMAC_LOG_TOD_REQUEST_SENT
508177.154 CMAC_LOG_TOD_REPLY_RECEIVED
508177.158 CMAC_LOG_TOD_COMPLETE
Event 7
The Cisco uBR924 establishes a security association. The
normally bypassed since "full security" as defined by DOCSIS is not supported.
Note
authentication check by the CMTS. This request has not been granted by cable modem
manufacturers. The Cisco uBR924 supports DOCSIS baseline privacy beginning with Cisco IOS
Release 12.0(5)T, which protects user's data from being "sniffed" on the cable network. For
information on baseline privacy, refer to "Event 10—Comply with Baseline Privacy" on page 17.
508177.160 CMAC_LOG_STATE_CHANGE
508177.162 CMAC_LOG_SECURITY_BYPASSED
16 Cisco IOS Release 12.0(5)T
CMAC_LOG_DHCP_ASSIGNED_IP_ADDRESS
CMAC_LOG_DHCP_TOD_SERVER_ADDRESS
CMAC_LOG_DHCP_CONFIG_FILE_NAME
CMAC_LOG_DHCP_COMPLETE
Establish the Time of Day
—
Establish Security
—
"Full security" was a request made by MSOs for a very strong authorization and
field indicates the IP address assigned from the DHCP
CMAC_LOG_DHCP_TFTP_SERVER_ADDRESS
field indicates the time of day
field shows the filename containing the
field shows that the IP connectivity was
CMAC_LOG_TOD_COMPLETE
security_association_state
field marks the
dhcp_state
188.188.1.62
4.0.0.1
4.0.0.32
360
platinum.cm
field indicates
establish_tod_state
3107617539
is
security_association_state