Specifications

DOCSIS 1.1 for Cisco uBR905 and Cisco uBR925 Cable Access Routers and Cisco CVA122 Cable Voice Adapters

Command Reference

Cisco IOS Release 12.2(15)CZ

debug cable-modem mac messages

To display debugging messages for specific MAC-layer messages, use the debug cable-modem mac

messages command in privileged EXEC mode. To turn off debugging for the MAC layer, use the no form

of this command.

Cisco uBR904, Cisco uBR905, Cisco uBR924, and Cisco uBR925 Cable Access Routers, and Cisco CVA122 Cable

Voice Adapter

debug cable-modem mac messages message-type

no debug cable-modem mac messages message-type

Syntax Description message-type Specific type of MAC-layer message type to display:

• dcc-ack—Displays the Dynamic Channel Change Acknowledge

(DCC-ACK) messages received by the CM.

• dcc-req—Displays the Dynamic Channel Change Request (DCC-REQ)

messages received by the CM.

• dcc-rsp—Displays the Dynamic Channel Change Response (DCC-RSP)

messages transmitted by the CM.

• dynsrv—Displays the Dynamic Service messages transmitted and

received by the CM (for more information, see the debug cable-modem

mac messages dynsrv command).

• map—Displays the MAP messages received by the CM.

• reg-ack—Displays the Registration Acknowledge(REG-ACK) messages

transmitted by the CM.

• reg-req —Displays the Registration Request (REG-REQ) messages

transmitted by the CM.

• reg-rsp—Displays the Registration Response (REG-RSP) messages

received by the CM.

• rng-req—Displays the Ranging Request (RNG-REQ) messages

transmitted by the CM.

• rng-rsp—Displays the Ranging Response (RNG-RSP) messages

received by the CM.

• sync—Displays the Time Synchronization (SYNC) messages received by

the CM.

• ucc-req—Displays the Upstream Channel Change Request (UCC-REQ)

messages received by the CM.

• ucc-rsp—Displays the Upstream Channel Change Response (UCC-RSP)

messages transmitted by the CM.

• ucd—Displays the Upstream Channel Descriptor (UCD) messages

received by the CM.

• up-dis—Displays the Upstream Transmitter Disable (UP-DIS) messages

received by the CM.