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Cisco Broadband Cable Command Reference Guide
OL-1581-07
Chapter 6 Cable CPE Commands
show controllers cable-modem crypto des
iv 1: even 0, odd 0
iv 2: even 0, odd 0
iv 3: even 0, odd 0
pb_req_bytes_to_minislots=0x10
us_des_ctrl=0x00, us_des_sid_1= 0x1234
ds_unencrypted_length=0x0C
Router#
Table 6-9
describes the significant fields shown in the display. For more information, see the Broadcom
documentation for the BCM3300 chip.
Tip
In Cisco IOS Release 12.2(8)T and later releases, you can add a timestamp to
show
commands using the
exec prompt timestamp
command in line configuration mode.
Related Commands
Table 6-9
show controllers cable-modem crypto des Field Descriptions
Field
Description
ds_des_key_table
Displays a table showing the downstream DES keys.
ds_des_cbc_iv_table
Displays a table showing the downstream DES Cipher Block Chaining
(CBC) mode information.
ds_des_sid_table
Displays a table showing the SID values to be enabled for DES encryption.
ds_des_sid_enable
Identifies 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 identifies the operating mode of the downstream DES
engine.
ds_des_sv
Displays the 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 router
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
Displays a table showing upstream DES keys.
us_des_cbc_iv_table
Displays a table of upstream DES CBC 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.
Command Description
show controllers cable-modem
Displays high-level controller information about the cable interface.
show controllers cable-modem
bpkm
Displays information about the baseline privacy key management
exchange between the cable interface and the CMTS.
show controllers cable-modem
filters
Displays the registers in the MAC hardware that are used for
filtering received frames.
