Cisco Systems UBR900 specifications Event 10-Comply with Baseline Privacy

Event 9—Perform 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 8—Transfer 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 10—Comply 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