Event 9Perform Registration
After the Cisco uBR900 series is initialized, authenticated, and configured, it requests to be registered with the headend CMTS. The CMAC_LOG_COS_ASSIGNED_SID field assigns a class of service (CoS) number and a service ID (SID). Multiple CoS entries in the configuration file imply that multiple SIDs are supported by the cable access router. If several cable access routers use the same configuration file, they will have the same CoS numbers but will be assigned different SIDs.
configuration_file_state platinum.cm
Note “Full security” was a request made by cable service providers for a very strong authorization and authentication check by the CMTS. The Cisco uBR900 series supports DOCSIS baseline privacy (Event 10), which protects your data from being “sniffed” on the cable network.
Event 8Transfer Operational Parameters
After completing the DHCP and security operations, the Cisco uBR900 series downloads operational parameters by downloading a configuration file located on the TFTP server. The CMAC_LOG_DHCP_CONFIG_FILE_NAME field shows the filename containing the transmission parameters.
508177.164 CMAC_LOG_STATE_CHANGE
508177.166 CMAC_LOG_LOADING_CONFIG_FILE 508178.280 CMAC_LOG_CONFIG_FILE_PROCESS_COMPLETE

Basic Troubleshooting

A successful registration is indicated by the CMAC_LOG_REGISTRATION_OK field.

508178.300

CMAC_LOG_STATE_CHANGE

registration_state

508178.302

CMAC_LOG_REG_REQ_MSG_QUEUED

 

508178.306

CMAC_LOG_REG_REQ_TRANSMITTED

 

508178.310

CMAC_LOG_REG_RSP_MSG_RCVD

 

508178.312

CMAC_LOG_COS_ASSIGNED_SID

5/19

508178.314

CMAC_LOG_COS_ASSIGNED_SID

6/20

508178.316

CMAC_LOG_COS_ASSIGNED_SID

7/21

508178.318

CMAC_LOG_RNG_REQ_QUEUED

19

508178.320

CMAC_LOG_REGISTRATION_OK

 

Event 10Comply with Baseline Privacy

During this event, keys for baseline privacy are exchanged between the Cisco uBR900 series and the headend CMTS. A link level encryption is performed so that your data cannot be “sniffed” by anyone else on the cable network.

Following is a trace showing baseline privacy enabled. The key management protocol is responsible for exchanging two types of keys: KEKs and TEKs. The KEK (key exchange key, also referred to as the authorization key) is used by the CMTS to encrypt the TEKs (traffic encryption keys) it sends to the Cisco uBR900 series. The TEKs are used to encrypt/decrypt the data. There is a TEK for each SID that is configured to use privacy.

Configuring the Cisco uBR900 Series Cable Access Routers 29

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Cisco Systems UBR900 specifications Event 10-Comply with Baseline Privacy