Cisco Systems UBR900 User Manual

Cisco IOS Release 12.0(7)T

  pb_req_bytes_to_minislots=0x10

  us_des_ctrl=0x00, us_des_sid_1= 0x1234

  ds_unencrypted_length=0x0C

Table 8 briefly describes some of the fields shown in the display. For more information, see the 
Broadcom documentation for the BCM3300 chip.

Related Commands

ds_des_key_table

Table showing downstream DES keys.

ds_des_cbc_iv_table

Table of downstream DES Cipher Block Chaining mode information.

ds_des_sid_table

Table showing the SID values to be enabled for DES encryption.

ds_des_sid_enable

Controls which SID entries in the SID table are enabled for encryption. In the above 
example, none of the entries are enabled for encryption.

ds_des_ctrl

Control register that controls the operating mode of the downstream DES engine.

ds_des_sv

DES security version register; the range of the version field in the Baseline Privacy 
Interface (BPI) extended headers that will be accepted by the hardware. High byte is 
upper limit, low byte is lower limit. The Cisco uBR900  will accept versions 0 to 15.

ds_unencrypted_length

Specifies the number of bytes that will be unencrypted at the beginning of the MAC 
frame. 0x0C means the first 12 bytes are not encrypted, which is what the DOCSIS 
Baseline Privacy specification calls for.

us_des_key_table

Table showing upstream DES keys.

us_des_cbc_iv_table

Table of upstream DES Cipher Block Chaining mode information.

us_des_ctrl

Control register that controls the operating mode of the upstream DES engine. The 
value 0x24 means that the upstream is configured to enable decryption and to use CBC 
mode.

Displays high-level controller information about a 
Cisco uBR900 series cable access router.

Displays information about the baseline privacy key 
management exchange between the Cisco uBR900 series and 
the  CMTS.

Displays the registers in the MAC hardware that are used for 
filtering received frames.

Displays the mini-slot lookup table inside a Cisco uBR900.

Displays detailed MAC-layer information for a Cisco uBR900.

Displays the contents of the registers used in the downstream 
physical hardware of the Cisco uBR900 series.

Displays the settings for the upstream and downstream tuners 
used by a Cisco uBR900 series.