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Troubleshooting Tips for the
Cisco uBR924 Cable Access Router
Feature Summary
This document describes the Cisco IOS troubleshooting commands that may be used by cable
service providers to verify communication between a Cisco uBR924 cable access router and other
peripheral devices installed in the HFC headend such as a Cisco uBR7200 series universal
broadband router, a DHCP server, and a TFTP server.
Benefits
The Cisco uBR924 cable access router troubleshooting system provides the following benefits:
•
A MAC-layer system log file that provides a snapshot of detailed reasons why an interface might
reset, along with all the negotiations that occurred between the Cisco uBR924 cable access router
and the CMTS. Over 220 possible description fields exist in this log, which is displayed using the
show controllers cable-modem 0 mac log command from privileged EXEC mode.
•
Debug does not need to be turned on in order to troubleshoot a Cisco uBR924 cable access router.
•
The progression of normal data-over-cable communication events is clearly explained,
simplifying the resolution of faulty system connections.
•
Troubleshooting and diagnostic tasks can be performed on the Cisco uBR924 from a remote
location using TELNET.
Restrictions
When using the Cisco uBR924 cable access router, keep the following restrictions and limitations in
mind:
•
The Cisco uBR924 is able to implement multiple classes of service (CoS) on the cable interface;
however, separate CoS streams are only available when the cable access router is connected to a
headend that supports multiple CoS per cable access router. In addition, the configuration file
downloaded to the cable access router must specify the use of multiple classes of service.
•
If the Cisco uBR924 cable access router is connected to a DOCSIS 1.0 headend that does not
support multiple CoS per cable access router, voice and data will be mixed, and voice traffic will
be transmitted on a best effort basis. This may cause poorer voice quality and lower data
throughput when calls are being made from the cable access router's telephone ports. Voice
quality may also be affected when transmitting or downloading large files, or at other times when
network traffic is heavy.
Troubleshooting Tips for the Cisco uBR924 Cable Access Router 1
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Table of Contents
Related Manuals for Cisco UBR924 - uBR 924 Router
Summary of Contents for Cisco UBR924 - uBR 924 Router
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Page 1: Feature Summary
0 mac log command from privileged EXEC mode. • Debug does not need to be turned on in order to troubleshoot a Cisco uBR924 cable access router. • The progression of normal data-over-cable communication events is clearly explained, simplifying the resolution of faulty system connections. -
Page 2: Related Documents
Related Features and Technologies The Cisco uBR924 cable access router is intended to be used in conjunction with a Cisco uBR7200 series universal broadband router or other DOCSIS-based CMTS located at the cable operator’s headend facility. - Page 3 Electronic Industries Association (EIA) downstream channel. • Cisco IOS Release 11.3(4)NA or later must be running on the Cisco uBR924 cable access router. When the cable access router is up and running, you can display the IOS release number by entering the show version command from user EXEC mode.
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Page 4: List Of Terms
Cable Device MIB reports statistics on the cable access router, while the RFI MIB reports statistics on the radio frequency transmissions over the cable television line. For descriptions of supported MIBs and how to use MIBs, see Cisco’s MIB web site on CCO at http://www.cisco.com/public/sw-center/netmgmt/cmtk/mibs.shtml. - Page 5 LAN interface of the cable access router. ingress noise—Over-the-air signals that are inadvertently coupled into the nominally closed coaxial cable distribution system. Ingress noise is difficult to track down and intermittent in nature. Troubleshooting Tips for the Cisco uBR924 Cable Access Router 5...
- Page 6 Cable can reuse spectrum that is sealed in its aluminum tubes. subscriber unit (SU)—An alternate term for cable access router. See cable access router. upstream—The set of frequencies used to send data from a subscriber to the headend. Cisco IOS Release 12.0(5)T...
- Page 7 Upconvertor Analog TV DS-RF 54-860 Mhz Digital TV Fiber Transceiver 80 km 1000 ft Fiber node (Telephone pole, underground box) Drop box Distribution amplifier amplifier Cisco u BR904 cable modem Troubleshooting Tips for the Cisco uBR924 Cable Access Router 7...
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Page 8: Troubleshooting Steps
The sequence numbers shown in Figure 2 are explained in Table 1, which appears after the illustration. The Cisco uBR924 will complete all the steps in this flowchart each time it needs to reestablish ranging and registration with the CMTS. - Page 9 Register with Start the Cisco Ranging uBR7246 Ranging and Registration auto adjust complete completed Establish Baseline privacy connectivety initialization Baseline privacy complete initialized Establish Operational time of Time of day established Troubleshooting Tips for the Cisco uBR924 Cable Access Router 9...
- Page 10 Telnet to the IP address assigned to the cable interface or Ethernet interface. If the interface is not up, you will need to access the Cisco IOS software via the RJ-45 console port, which is a physical port on the back of the Cisco uBR924.
- Page 11 Step 3—Display the Cisco uBR924’s MAC Log File A MAC-layer circular log file is stored inside the Cisco uBR924. This file contains a history of the log messages such as state event activities and timestamps. This is the most valuable information for troubleshooting the cable interface.
- Page 12 Step 3—Display the Cisco uBR924’s MAC Log File 508144.390 CMAC_LOG_WILL_SEARCH_SAVED_DS_FREQUENCY 699000000 508145.540 CMAC_LOG_UCD_MSG_RCVD 508146.120 CMAC_LOG_DS_64QAM_LOCK_ACQUIRED 699000000 508146.122 CMAC_LOG_DS_CHANNEL_SCAN_COMPLETED 508146.124 CMAC_LOG_STATE_CHANGE wait_ucd_state 508147.554 CMAC_LOG_UCD_MSG_RCVD 508147.558 CMAC_LOG_UCD_NEW_US_FREQUENCY 20000000 508147.558 CMAC_LOG_SLOT_SIZE_CHANGED 508147.622 CMAC_LOG_FOUND_US_CHANNEL 508147.624 CMAC_LOG_STATE_CHANGE wait_map_state 508148.058 CMAC_LOG_MAP_MSG_RCVD 508148.060 CMAC_LOG_INITIAL_RANGING_MINISLOTS 508148.062 CMAC_LOG_STATE_CHANGE ranging_1_state 508148.064 CMAC_LOG_RANGING_OFFSET_SET_TO...
- Page 13 Step 4—Interpret the MAC Log File and Take Action The MAC log file gives a detailed history of initialization events that occurred in the Cisco uBR924. All pertinent troubleshooting information is stored here. The following sample log file is broken down into the chronological sequence of events listed below.
- Page 14 Cisco uBR924 cable access router uses a built-in default frequency scanning feature to address this issue. After the Cisco uBR924 finds a successful downstream frequency channel, it saves the channel to NVRAM. The Cisco uBR924 recalls this value the next time it needs to synchronize its frequency. field tells you what frequency the Cisco CMAC_LOG_WILL_SEARCH_DS_FREQUENCY_BAND uBR924 will scan for.
- Page 15 508148.060 CMAC_LOG_INITIAL_RANGING_MINISLOTS Event 4—Start Ranging for Power Adjustments The ranging process adjusts the transmit power of the cable access router. The Cisco uBR924 performs ranging in two stages: ranging state 1 and ranging state 2. field is the power level that the CMTS told the Cisco uBR924 to CMAC_LOG_POWER_LEVEL_IS adjust to.
- Page 16 Event 6 Establish the Time of Day — The Cisco uBR924 cable access router accesses the Time of Day server for the current date and time, which is used to create time stamps for logged events. The field indicates CMAC_LOG_TOD_COMPLETE a successful time of day sequence.
- Page 17 EVENT_8_KEY_REPLY/STATE_B_OP_WAIT, new state: STATE_D_OPERATIONAL 856.326 CMAC_LOG_PRIVACY_INSTALLED_KEY_FOR_SID 856.330 CMAC_LOG_PRIVACY_ESTABLISHED In order for baseline privacy to work, you must use a code image name on the Cisco uBR924 Note that contains the characters k1. In addition, baseline privacy must be supported on the headend CMTS, and it must be turned on in the configuration file that is downloaded to the Cisco uBR924.
- Page 18 Step 5—Use Additional Troubleshooting Commands Event 11 Enter the Maintenance State — As soon as the Cisco uBR924 has successfully completed the above events, it enters the operational maintenance state and is authorized to forward traffic into the cable network. 508178.322 CMAC_LOG_STATE_CHANGE maintenance_state Step 5—Use Additional Troubleshooting Commands...
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Page 19: Command Reference
• show controllers cable-modem tuner In Cisco IOS Release 12.0(1)T or later, you can search and filter the output for show and more commands. This functionality is useful when you need to sort through large amounts of output, or if you want to exclude output that you do not need to see. - Page 20 To display high-level controller information about a Cisco uBR924 cable access router, use the show controllers cable-modem command in privileged EXEC mode. show controllers cable-modem number Syntax Description number Controller number inside the Cisco uBR924.
- Page 21 06 pak=0x000000 buf=0x200000 status=0x00 pak_size=0 07 pak=0x000000 buf=0x200000 status=0x20 pak_size=0 TX PD ring with 8 entries at 0x202038, tx_count = 0 tx_head_pd = 0x202838 (4) tx_tail_pd = 0x202838 (4) 00 status=0x00 bd_index=0x0000 len=0x0000 hdr_len=0x0000 Troubleshooting Tips for the Cisco uBR924 Cable Access Router 21...
- Page 22 Indicates the bit to hit when resetting the chip. station address MAC address of this Cisco uBR924 cable access router interface. default station address Default MAC address assigned by the factory for this Cisco uBR924 cable access router. PLD VERSION PLD version of the BCM3300 chip.
- Page 23 Estimate of signal-to-noise ratio (SNR) in Db X 1000. ber_estimate Estimate of bit error rate (always 0). lock_threshold Minimum signal-to-noise ratio (SNR) that the Cisco uBR924 will accept as a valid lock. qam_mode The modulation scheme used in the downstream direction. Tx: tx_freq Upstream frequency sent to the Cisco uBR924 by the CMTS in the UCD message.
- Page 24 Number of times the downstream input first-in first-out (FIFO) buffer became full on the Cisco uBR924. rerequests Number of times a bandwidth request generated by the Cisco uBR924 was not responded to by the CMTS. DS mac msg overruns Number of times the Cisco uBR924’s DMA controller had a downstream MAC message and there were no free MAC message buffer descriptors to accept the message.
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Page 25: Related Commands
Displays the contents of the registers used in the downstream physical hardware of the Cisco uBR924. show controllers cable-modem tuner Displays the settings for the upstream and downstream tuners used by a Cisco uBR924. Troubleshooting Tips for the Cisco uBR924 Cable Access Router 25... -
Page 26: Syntax Description
This command was first introduced. Usage Guidelines Baseline privacy key management exchanges take place only when both the Cisco uBR924 and the CMTS are running code images that support baseline privacy, and the privacy class of service is enabled via the configuration file that is downloaded to the cable access router. Baseline privacy code images for the Cisco uBR924 contain k1 in the code image name. -
Page 27: Command Description
Authorization Request message to the CMTS. reauthorization wait time The number of seconds the Cisco uBR924 waits for a reply after it has sent an Authorization Request message to the CMTS in response to a reauthorization request or an Authorization Invalid message from the CMTS. - Page 28 To display information about the Data Encryption Standard (DES) engine registers, use the show controllers cable-modem des command in privileged EXEC mode. show controllers cable-modem number des Syntax Description number Controller number inside the Cisco uBR924. Defaults No default behavior or values. Command Modes Privileged EXEC...
- Page 29 Interface (BPI) extended headers that will be accepted by the hardware. High byte is upper limit, low byte is lower limit. The Cisco uBR924 will accept versions 0 to 15. Troubleshooting Tips for the Cisco uBR924 Cable Access Router 29...
- Page 30 Displays the registers in the MAC hardware that are used for filtering received frames. show controllers cable-modem Displays the mini-slot lookup table inside a Cisco uBR924. lookup-table show controllers cable-modem mac Displays detailed MAC-layer information for a Cisco uBR924.
- Page 31 Privileged EXEC Command History Release Modification 11.3 NA This command was first introduced. Usage Guidelines Some of the filtering parameters are MAC hardware addresses, Service IDs (SIDs), and upstream channel IDs. Troubleshooting Tips for the Cisco uBR924 Cable Access Router 31...
- Page 32 Service ID (SID) field of the ranging request message. ds_data_da_filter_table Downstream data processing filter table. ds_data_da_filter_ctrl Downstream data processing filter control. ds_pdu_sof Downstream PDU start of frame. ds_data_da_mc Downstream data processing MAC control. us_ctrl_status Upstream control status. Cisco IOS Release 12.0(5)T...
- Page 33 Displays the contents of the registers used in the downstream physical hardware of the Cisco uBR924. show controllers cable-modem tuner Displays the settings for the upstream and downstream tuners used by a Cisco uBR924. Troubleshooting Tips for the Cisco uBR924 Cable Access Router 33...
- Page 34 This command displays the details of the lookup table. The driver uses this table to convert the size of the packets that the Cisco uBR924 wants to transmit into a bandwidth request to the CMTS in mini-slots. The contents of this table are affected by the upstream symbol rate that is negotiated between the CMTS and the cable access router.
- Page 35 3C 3C 3C 3C 3C 3C 3C 3C 3C 3C 3C 3C 3C 3C 3C 3C 360: 3C 3C 3C 3C 3C 3C 3C 3C 3C 3C 3C 3C 3C 3C 3C 3C Troubleshooting Tips for the Cisco uBR924 Cable Access Router 35...
- Page 36 0528 0528 0528 0528 0528 0528 0528 0528 0604 0604 0604 0604 0604 0604 0604 0604 0604 0604 0604 0604 0604 0604 0604 06E0 06E0 06E0 06E0 06E0 06E0 06E0 06E0 06E0 06E0 06E0 06E0 06E0 06E0 06E0 07BC 07BC Cisco IOS Release 12.0(5)T...
- Page 37 Displays the contents of the registers used in the downstream physical hardware of the Cisco uBR924. show controllers cable-modem tuner Displays the settings for the upstream and downstream tuners used by a Cisco uBR924. Troubleshooting Tips for the Cisco uBR924 Cable Access Router 37...
- Page 38 MAC log messages. If the Cisco uBR924 interface fails to come up or resets periodically, the MAC log will capture what happened. For example, if an address is not obtained from the DHCP server, an error is logged, initialization starts over, and the Cisco uBR924 scans for a downstream frequency.
- Page 39 00:14:32: 872.222 CMAC_LOG_ADJUST_RANGING_OFFSET 2853 00:14:32: 872.224 CMAC_LOG_RANGING_OFFSET_SET_TO 12463 00:14:32: 872.228 CMAC_LOG_ADJUST_TX_POWER 00:14:32: 872.230 CMAC_LOG_POWER_LEVEL_IS 34.0 dBmV (commanded) 00:14:32: 872.234 CMAC_LOG_STATE_CHANGE ranging_2_state 00:14:32: 872.238 CMAC_LOG_RNG_REQ_QUEUED 00:14:32: 872.848 CMAC_LOG_RNG_REQ_TRANSMITTED 00:14:32: 872.852 CMAC_LOG_RNG_RSP_MSG_RCVD Troubleshooting Tips for the Cisco uBR924 Cable Access Router 39...
- Page 40 873.392 CMAC_LOG_RNG_RSP_MSG_RCVD 00:14:33: 873.396 CMAC_LOG_WATCHDOG_TIMER 00:14:33: 873.398 CMAC_LOG_RESET_DHCP_WATCHDOG_EXPIRED 00:14:33: 873.402 CMAC_LOG_STATE_CHANGE reset_interface_state 00:14:33: 873.406 CMAC_LOG_DHCP_PROCESS_KILLED The fields in this display are explained in the section “Step 4—Interpret the MAC Log File and Take Action” on page 13. Cisco IOS Release 12.0(5)T...
- Page 41 No Ranging Response received. T3 time-out. This output indicates that the Cisco uBR924 acquired a downstream lock, successfully read a UCD, and successfully read a MAP. However, it was unable to communicate with the CMTS after ranging through all upstream transmit power levels. The Cisco uBR924 tried to communicate with the CMTS 16 times without success, after which it reset the cable interface to try to find a better downstream frequency.
- Page 42 The Time Of Day server took too long to respond. The baseline privacy exchange with the CMTS took too CMAC_LOG_RESET_PRIVACY_WATCHDOG_EXPIRED long. The Cisco uBR924 was unable to transmit a response to a CMAC_LOG_RESET_CHANGE_US_WATCHDOG_EXPIRED UCC-REQ message. The “full security” exchange with the CMTS took too CMAC_LOG_RESET_SECURITY_WATCHDOG_EXPIRED long.
- Page 43 The CMTS failed too many times to respond to a CMAC_LOG_RESET_T6_RETRIES_EXHAUSTED REG-REQ message. The Cisco uBR924 MAC layer failed to detect a change CMAC_LOG_RESET_MAINTENANCE_WATCHDOG_DRIVER in the interface driver. The Network Access parameter is missing from the CMAC_LOG_RESET_NET_ACCESS_MISSING DOCSIS configuration file.
- Page 44 00 pak=0x82E0DEC buf=0x22CC72 status=0x80 pak_size=0 01 pak=0x82E021C buf=0x22A242 status=0x80 pak_size=0 02 pak=0x82E060C buf=0x22B052 status=0x80 pak_size=0 03 pak=0x82E11DC buf=0x22DA82 status=0x80 pak_size=0 04 pak=0x82DFC34 buf=0x228D2A status=0x80 pak_size=0 05 pak=0x82E09FC buf=0x22BE62 status=0x80 pak_size=0 06 pak=0x82DEE6C buf=0x225BF2 status=0x80 pak_size=0 07 pak=0x82DFA3C buf=0x228622 status=0xA0 pak_size=0 Cisco IOS Release 12.0(5)T...
- Page 45 K0_ctrl=0x06, K1_ctrl=0x07, acq_threshhold=0x01 err_threshhold=0x04, timeout_threshold=0xFF nco_bias=0x4F7004F7, ranging_offset=0x00000000 ts_err=0x00, sync_valid=0x00, delta_F=0x00 timeout_err=0x00 spi: dynamic_ctrl=0x09, static_ctr=0x9F, autonomous=0x01 irq_ack=0x00, spi_cmd=0x51, spi_addr=0x11 spi_data= FF/00/00/00/00/00/00 Troubleshooting Tips for the Cisco uBR924 Cable Access Router 45...
- Page 46 Show Controllers Cable-Modem MIB Statistics Field Descriptions Field Description DS fifo full Number of times the downstream receive buffer on the Cisco uBR924 has become full. Rerequests Number of registration requests sent by the Cisco uBR924 to the CMTS. DS mac msg overruns Number of times the DMA controller has had a downstream MAC message and there were no free MAC message buffer descriptors to accept the message.
- Page 47 88 84 04 4C C4 84 C0 0C 44 08 08 CC 8C 0C 80 48 88 40 44 CC 48 4C 00 C4 40 80 8C C8 C0 C8 04 88 Troubleshooting Tips for the Cisco uBR924 Cable Access Router 47...
- Page 48 Last Codeword Length: Scrambler on/off: Config File: Network Access: TRUE Vendor ID: 0.240.30 Baseline Privacy: Auth. Wait Timeout: Reauth. Wait Timeout: Auth. Grace Time: Op. Wait Timeout: Retry Wait Timeout: TEK Grace Time: Auth. Reject Wait Time: 60 Cisco IOS Release 12.0(5)T...
- Page 49 CMTS within a specified time. T3 Timeouts Number of timeouts caused by the Cisco uBR924 not receiving a response within a specified time from the CMTS to a RNG-REQ message during initial maintenance. T4 Timeouts Number of timeouts caused by the Cisco uBR924 not receiving a response within a specified time from the CMTS to a periodic maintenance request.
- Page 50 CMTS upstream frame time derived at the Cisco uBR924. Used to synchronize the upstream transmissions in the time division multiple access (TDMA) scheme, this value is roughly equal to the round-trip delay of the Cisco uBR924 from the CMTS. Mini-Slot Size Size T of the mini-slot for this upstream channel in units of the timebase tick of 6.25 µs.
- Page 51 Authorization Request message to the CMTS. Reauth. Wait Timeout Number of seconds the Cisco uBR924 waits for a reply after it has sent an Authorization Request message to the CMTS in response to a reauthorization request or an Authorization Invalid message from the CMTS.
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Page 52: Related Commands
Name of the configuration file that is downloaded from the TFTP server to provide the Cisco uBR924 with operational parameters. Time Zone Offset Correction received from the DHCP server to synchronize the Cisco uBR924 time clock with the CMTS. Related Commands... - Page 53 To display the contents of the registers used in the downstream physical hardware of the Cisco uBR924 cable access router, use the show controllers cable-modem phy command in privileged EXEC mode. show controllers cable-modem phy {receive | transmit}...
- Page 54 01 52 08 01 00 09 01 30 0A 01 01 0B 01 02 04 25 04 01 01 01 02 01 02 03 02 00 40 04 02 00 40 05 01 00 06 01 22 07 02 01 52 08 01 00 09 01 30 0A Cisco IOS Release 12.0(5)T...
- Page 55 Displays detailed MAC-layer information for a Cisco uBR924. show controllers cable-modem tuner Displays the settings for the upstream and downstream tuners used by a Cisco uBR924. Troubleshooting Tips for the Cisco uBR924 Cable Access Router 55...
- Page 56 To display the settings for the upstream and downstream tuners used by a Cisco uBR924 cable access router, use the show controllers cable-modem tuner command in privileged EXEC mode. show controllers cable-modem tuner Syntax Description There are no key words or arguments for this command.
- Page 57 Signal to noise estimate in dB X 1000. ber_estimate Bit error rate estimate (always 0). lock_threshold Minimum signal-to-noise ratio (SNR) that the Cisco uBR924 will accept as a valid lock. QAM status Indicates if QAM/FEC lock has been acquired and the modulation mode in use. tx_freq Upstream frequency sent to the Cisco uBR924 by the CMTS in the UCD message.
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Page 58: Debug Commands
Debug Commands The following debug commands are available to troubleshoot a Cisco uBR924 cable access router: • debug cable-modem bpkm • debug cable-modem bridge • debug cable-modem error • debug cable-modem interrupts • debug cable-modem mac •... - Page 59 This command was first introduced. Usage Guidelines Baseline privacy key management exchanges take place only when both the Cisco uBR924 and the CMTS are running code images that support baseline privacy, and the privacy class of service is enabled via the configuration file that is downloaded to the cable access router. Baseline privacy code images for the Cisco uBR924 contain k1 in the code image name.
- Page 60 Cisco uBR924. debug cable-modem interrupts Debugs Cisco uBR924 interrupts. debug cable-modem mac Troubleshoots the Cisco uBR924 MAC layer. debug cable-modem map Displays the timing from MAP messages to sync messages and the timing between MAP messages. Cisco IOS Release 12.0(5)T...
- Page 61 Use the debug cable-modem bridge command in privileged EXEC mode to debug bridge filter processing information on a Cisco uBR924. To turn the debugging messages off, use the no form of this command. [no] debug cable-modem bridge Syntax Description This command has no keywords or arguments.
- Page 62 Related Commands Command Description debug cable-modem bpkm Debugs baseline privacy information on a Cisco uBR924. debug cable-modem error Enables debugging messages for the cable interface driver on a Cisco uBR924. debug cable-modem interrupts Debugs Cisco uBR924 interrupts.
- Page 63 7 20:16:30: 1st Sync acquired after 1100 ms. *Mar 7 20:16:30: Recovery loop is locked (7/9) *Mar 7 20:16:30: 2nd Sync acquired after 100 ms. *Mar 7 20:16:30: Recovery loop is locked (10/15) Troubleshooting Tips for the Cisco uBR924 Cable Access Router 63...
- Page 64 Related Commands Command Description debug cable-modem bpkm Debugs baseline privacy information on a Cisco uBR924. debug cable-modem bridge Debugs bridge filter processing information on a Cisco uBR924. debug cable-modem interrupts Debugs Cisco uBR924 interrupts. debug cable-modem mac Troubleshoots the Cisco uBR924 MAC layer.
- Page 65 To debug Cisco uBR924 interrupts, use the debug cable-modem interrupts command in privileged EXEC mode . To turn the debugging messages off, use the no form of this command. [no] debug cable-modem interrupts Syntax Description This command has no keywords or arguments.
- Page 66 Related Commands Command Description debug cable-modem bpkm Debugs baseline privacy information on a Cisco uBR924. debug cable-modem bridge Debugs bridge filter processing information on a Cisco uBR924. debug cable-modem error Enables debugging messages for the cable interface driver on a Cisco uBR924.
- Page 67 The same information is displayed by both commands. If the Cisco uBR924 interface fails to come up or resets periodically, the MAC log will show what happened. For example, if an address is not obtained from the DHCP server, an error is logged, initialization starts over, and the Cisco uBR924 scans for a downstream frequency.
- Page 68 528408.586 CMAC_LOG_RNG_RSP_MSG_RCVD 528414.102 CMAC_LOG_WATCHDOG_TIMER 528418.654 CMAC_LOG_RNG_REQ_TRANSMITTED 528418.656 CMAC_LOG_RNG_RSP_MSG_RCVD 528428.726 CMAC_LOG_RNG_REQ_TRANSMITTED 528428.728 CMAC_LOG_RNG_RSP_MSG_RCVD 528438.796 CMAC_LOG_RNG_REQ_TRANSMITTED 528438.798 CMAC_LOG_RNG_RSP_MSG_RCVD 528444.102 CMAC_LOG_WATCHDOG_TIMER 528444.492 CMAC_LOG_LINK_DOWN 528444.494 CMAC_LOG_RESET_FROM_DRIVER 528444.494 CMAC_LOG_STATE_CHANGE wait_for_link_up_state 528444.494 CMAC_LOG_DRIVER_INIT_IDB_SHUTDOWN 0x08098D02 528444.494 CMAC_LOG_LINK_DOWN 528474.494 CMAC_LOG_WATCHDOG_TIMER 528504.494 CMAC_LOG_WATCHDOG_TIMER 528534.494 CMAC_LOG_WATCHDOG_TIMER Cisco IOS Release 12.0(5)T...
- Page 69 UCD messages received <cr> The dynsrv keyword displays Dynamic Service Add or Dynamic Service Delete messages during the off-hook/on-hook transitions of a phone connected to the Cisco uBR924. Troubleshooting Tips for the Cisco uBR924 Cable Access Router 69...
- Page 70 In addition, transmitted REG-REQs are displayed in hex dump format. The output from this command is very verbose and is usually not needed for normal interface debugging. The command is most useful when attempting to attach a Cisco uBR924 cable access router to a CMTS that is not DOCSIS-qualified.
- Page 71 7 01:44:20: REG-RSP MESSAGE *Mar 7 01:44:20: --------------- *Mar 7 01:44:20: FRAME HEADER *Mar 7 01:44:20: - 0xC2 == MAC Management *Mar 7 01:44:20: MAC_PARM - 0x00 *Mar 7 01:44:20: - 0x29 Troubleshooting Tips for the Cisco uBR924 Cable Access Router 71...
- Page 72 - 00F0.1EB2.BB61 Related Commands Command Description debug cable-modem bpkm Debugs baseline privacy information on a Cisco uBR924. debug cable-modem bridge Debugs bridge filter processing information on a Cisco uBR924. debug cable-modem error Enables debugging messages for the cable interface driver on a Cisco uBR924.
- Page 73 To display the timing from MAP messages to sync messages and the timing between MAP messages on a Cisco uBR924 cable access router, use the debug cable-modem map command in privileged EXEC mode. To turn the debugging messages off, use the no form of this command.
- Page 74 Related Commands Command Description debug cable-modem bpkm Debugs baseline privacy information on a Cisco uBR924. debug cable-modem bridge Debugs bridge filter processing information on a Cisco uBR924. debug cable-modem error Enables debugging messages for the cable interface driver on a Cisco uBR924.