Page 2 - Feature Overview; Cisco IOS Software Feature Sets; The following feature set categories are currently available:
Feature Overview 2 Cisco IOS Release 12.0(7)T Cisco IOS Software Feature Sets This section briefly describes the common feature sets supported by the Cisco uBR900 series cable access routers. Each feature set contains a number of features that provide a specific functionality such as Voice over IP (...
Page 3 - Configuring the Cisco uBR900 Series Cable Access Routers; Base IP Bridging; Note; Small Office
Cisco IOS Software Feature Sets Configuring the Cisco uBR900 Series Cable Access Routers 3 Base IP Bridging Base IP Bridging includes full and DOCSIS-compliant bridging and DOCSIS Baseline Privacy. The Base IP Bridging feature set allows the Cisco uBR900 series cable access router to function as a D...
Page 4 - Telecommuter; Data Operations
Feature Overview 4 Cisco IOS Release 12.0(7)T In firewall mode, the Cisco uBR900 series cable access router provides a high-speed Internet connection for an office’s local network while protecting the computers on the office network from common attacks such as denial of service attacks and destructi...
Page 5 - Figure 1; Operating Modes
Data Operations Configuring the Cisco uBR900 Series Cable Access Routers 5 Figure 1 Typical Cisco Broadband Data Cable System Operating Modes The broadband data cable system uses multiple types of access control to ensure efficient use of bandwidth over a wide range of loading conditions. Advanced q...
Page 6 - Data Specifications
Feature Overview 6 Cisco IOS Release 12.0(7)T Note Interactive games are the exception. Although low latency is required in gaming applications, high upstream data throughput is not demanded since the volume of data transmitted upstream is typically small. Data Specifications Table 1 Cisco uBR900 Se...
Page 7 - Service Assignments; Security; Cisco IOS images must contain
Data Operations Configuring the Cisco uBR900 Series Cable Access Routers 7 Service Assignments Each Cisco uBR900 series cable access router on the network is configured to receive data on a particular downstream channel. A downstream channel contains upstream segment(s). Each upstream segment typica...
Page 8 - Routing Applications
Feature Overview 8 Cisco IOS Release 12.0(7)T The Cisco uBR900 series complies with the DOCSIS standards for interoperable cable access routers; it supports full transparent bridging as well as DOCSIS-compliant transparent bridging. Note If the attached CPE devices and the coaxial cable interface ar...
Page 9 - Figure 3; Layer 2 Tunneling Protocol
Data Operations Configuring the Cisco uBR900 Series Cable Access Routers 9 Figure 3 Cisco uBR900 Series Cable Access Router in a Routing Configuration with a Hub Layer 2 Tunneling Protocol Layer 2 Tunneling Protocol (L2TP) is an emerging Internet Engineering Task Force (IETF) standard that combines ...
Page 10 - Voice Over IP Operations
Feature Overview 10 Cisco IOS Release 12.0(7)T Port Address Translation (PAT) is a similar mechanism that enables all internal hosts to share a single registered IP address (many-to-one translation). NAT/PAT: • Allows customers to maintain their own private networks while giving them full Internet a...
Page 11 - Figure 4
Voice Over IP Operations Configuring the Cisco uBR900 Series Cable Access Routers 11 Figure 4 Simplified VoIP Over Cable Network Your company can then deploy IP telephony as a local-loop bypass service where voice packets are transferred from the CMTS to: • A telephony gatekeeper when using H.323; t...
Page 12 - Voice Handling; G.729 8000 bps — Default CODEC for telephone calls
Feature Overview 12 Cisco IOS Release 12.0(7)T • In general, fax/modem cards are not supported over VoIP links. Contact your network management, provisioning, or operations team to determine what your network supports. Voice Handling The Cisco uBR924 cable access router supports the following compre...
Page 13 - voip dial peer group; CLI commands, or you can obtain these addresses; pots port; CLI; pots dial peer; for each port, creates; voip dial peer; for the RAS target, and starts the H.323 RAS gateway support.
Voice Over IP Operations Configuring the Cisco uBR900 Series Cable Access Routers 13 The Cisco uBR924 cable access router supports the following service classes: • The first CoS in the router’s configuration file is configured as the “Tiered Best Effort Type Class” used by the router as the primary ...
Page 14 - SGCP Protocol Stack; method can be active at a time.; Voice Specifications; Idle channel noise
Feature Overview 14 Cisco IOS Release 12.0(7)T Note To support voice configurations involving Cisco gatekeeper products using RAS, the headend must have IP multicast enabled. The cable interface must be designated as the default for RAS to discover the gatekeeper. The gatekeeper then resolves all di...
Page 15 - Backup POTS Connection; Crosstalk; Table 2
Voice Over IP Operations Configuring the Cisco uBR900 Series Cable Access Routers 15 Backup POTS Connection The Cisco uBR924 cable access router provides an RJ-11 port (Line) that connects to a standard analog telephone wall jack. In the event of a building power failure or a Cisco uBR924 power prob...
Page 16 - Security Features; DOCSIS Baseline Privacy; IPSec provides the following network security services:; Triple Data Encryption Standard
Feature Overview 16 Cisco IOS Release 12.0(7)T Note The backup POTS connection enables only one of the VoIP ports on the Cisco uBR924 to function during a power outage. Calls in progress prior to the power outage will be disconnected. If power is reestablished while a cutover call is in progress, th...
Page 17 - Firewall; Cisco IOS Firewall Feature Set; NetRanger Support—IOS Intrusion Detection
Security Features Configuring the Cisco uBR900 Series Cable Access Routers 17 Firewall Cisco uBR900 series cable access routers act as buffers between any connected public and private networks. In firewall mode, Cisco cable access routers use access lists and other methods to ensure the security of ...
Page 18 - Configuration Options
Feature Overview 18 Cisco IOS Release 12.0(7)T Configuration Options The Cisco uBR900 series cable access router typically ships from the factory ready to work in the Base IP Bridging (DOCSIS-compliant bridging) data-only mode. The cable access router is configured automatically at startup by one or...
Page 19 - Initial Power-On Sequence; Table 3; An ideal downstream signal is one that synchronizes; At this point, the cable access router has established
Configuration Options Configuring the Cisco uBR900 Series Cable Access Routers 19 The following sections describe the initial power-on and provisioning sequences in more detail, as well as the requirements that must be met by both the cable access router and the CMTS before provisioning can be succe...
Page 21 - ends all telnet sessions; and; passwords if the configuration file does not include; and; line vty; Comply with baseline privacy.
Configuration Options Configuring the Cisco uBR900 Series Cable Access Routers 21 At this point the router is online and operational in the basic DOCSIS bridging (“plug and play”) mode. If the DOCSIS configuration file specifies that the router must download a Cisco IOS image and a Cisco IOS configu...
Page 23 - Figure 6; Basic Troubleshooting; show controllers cable-modem 0 mac log
Basic Troubleshooting Configuring the Cisco uBR900 Series Cable Access Routers 23 Figure 6 illustrates the traffic flow during the initialization process. Figure 6 Cisco uBR900 Series Cable Access Router Provisioning Overview Note For more detail on the provisioning process, see the DOCSIS 1.0 Radio...
Page 25 - show; For examples and descriptions of how to use these keywords, see the; show controllers; command reference page.
Basic Troubleshooting Configuring the Cisco uBR900 Series Cable Access Routers 25 508148.580 CMAC_LOG_RNG_REQ_QUEUED 2 508155.820 CMAC_LOG_RNG_REQ_TRANSMITTED 508155.824 CMAC_LOG_RNG_RSP_MSG_RCVD 508155.826 CMAC_LOG_ADJUST_RANGING_OFFSET -64 508155.826 CMAC_LOG_RANGING_OFFSET_SET_TO 11954 508155.828...
Page 26 - Event 1—Wait for the Link to Come Up; Event 2
Feature Overview 26 Cisco IOS Release 12.0(7)T In the following paragraphs, a sample log file is broken down into the chronological sequence of events listed below. Sample comments are also included in the log file. • Event 1—Wait for the Link to Come Up • Event 2—Scan for a Downstream Channel, then...
Page 27 - Event 3—Obtain Upstream Parameters
Basic Troubleshooting Configuring the Cisco uBR900 Series Cable Access Routers 27 The downstream frequency search table is arranged so that the first frequencies that are scanned are above 450 MHz. Because many CATV systems have been upgraded from 450 MHz to 750 MHz coaxial cable, digital channels h...
Page 28 - Event 5—Establish IP Connectivity; field shows that the IP connectivity was successful.; Event 6; field indicates a; Event 7
Feature Overview 28 Cisco IOS Release 12.0(7)T 508148.568 CMAC_LOG_RNG_RSP_SID_ASSIGNED 2 508148.570 CMAC_LOG_ADJUST_RANGING_OFFSET 2408 508148.572 CMAC_LOG_RANGING_OFFSET_SET_TO 12018 508148.574 CMAC_LOG_ADJUST_TX_POWER 20 508148.576 CMAC_LOG_POWER_LEVEL_IS 33.0 dBmV (commanded) 508148.578 CMAC_LOG...
Page 29 - Event 8; field shows the filename containing the transmission; Event 9; field assigns a class of; Comply with Baseline Privacy
Basic Troubleshooting Configuring the Cisco uBR900 Series Cable Access Routers 29 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 protec...
Page 30 - Enter the Maintenance State; Benefits
Benefits 30 Cisco IOS Release 12.0(7)T 851.088 CMAC_LOG_STATE_CHANGE establish_privacy_state 851.094 CMAC_LOG_PRIVACY_FSM_STATE_CHANGE machine: KEK, event/state: EVENT_1_PROVISIONED/STATE_A_START, new state: STATE_B_AUTH_WAIT 851.102 CMAC_LOG_BPKM_REQ_TRANSMITTED 851.116 CMAC_LOG_BPKM_RSP_MSG_RCVD 8...
Page 31 - Restrictions; Related Features and Technologies; Cisco uBR924 Installation and Configuration Guide
Restrictions Configuring the Cisco uBR900 Series Cable Access Routers 31 Restrictions When using the Cisco uBR900 series cable access router, keep the following restrictions and limitations in mind: • The Cisco uBR900 series is able to implement multiples classes of service (CoS) on the cable interf...
Page 32 - Supported Platforms
Supported Platforms 32 Cisco IOS Release 12.0(7)T Supported Platforms The Cisco uBR900 series cable access router is a standalone device; it works in conjunction with the Cisco uBR7246 and the Cisco uBR7223 universal broadband routers. Prerequisites In order to use the Cisco uBR900 series cable acce...
Page 33 - show version; command from user EXEC mode.; Supported MIBs and RFCs; The Cisco Voice MIBs consist of the following components:
Supported MIBs and RFCs Configuring the Cisco uBR900 Series Cable Access Routers 33 • The CMTS system administrator must ensure appropriate databases are updated to activate and support the new subscriber account in the provisioning, billing and/or network management systems in place for your networ...
Page 34 - as part of their filenames.; Defines the textual conventions used in Cisco’s enterprise MIBs.
Supported MIBs and RFCs 34 Cisco IOS Release 12.0(7)T • Cable-specific MIBs—These MIBs provide information about the cable interface and related information on the Cisco uBR900 series cable access router. They include both DOCSIS-required MIBs and Cisco-specific enterprise MIBs. If your network mana...
Page 35 - Table 4
Supported MIBs and RFCs Configuring the Cisco uBR900 Series Cable Access Routers 35 The Cisco uBR900 series cable access router also supports the following: • Radio Frequency Interface Specification—Developed by the Multimedia Cable Network System (MCNS) consortium. This is the radio-frequency inter...
Page 36 - — xgcpUpDownNotification; Configuration Tasks; Caution
Configuration Tasks 36 Cisco IOS Release 12.0(7)T — xgcpUpDownNotification —Notification sent when the protocol status changes between up and down 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 37 - Configuring a Host Name and Password; Verifying the Host Name and Password; command from global configuration mode:; cisco; After configuring a password, when you enter; at; guessme; Exit back to global configuration mode.
Configuring a Host Name and Password Configuring the Cisco uBR900 Series Cable Access Routers 37 Configuring a Host Name and Password One of the first configuration tasks you might want to perform is to configure a host name and set an encrypted password. Configuring a host name allows you to distin...
Page 38 - Configuration, Verification, and Troubleshooting Tips; Configuring Ethernet and Cable Access Router Interfaces; Verifying IP Address Configuration; show arp; Configuration, Verification, and Troubleshooting Tips; Return to privileged EXEC mode.
Configuring Ethernet and Cable Access Router Interfaces 38 Cisco IOS Release 12.0(7)T • Exit global configuration mode and attempt to reenter it using the new enable password: cisco# exit cisco con0 is now available Press RETURN to get started. cisco> enable Password: guessme cisco# Configuration...
Page 39 - Configuring Routing; Return to global configuration mode.
Configuring Routing Configuring the Cisco uBR900 Series Cable Access Routers 39 Configuring Routing DOCSIS-compliant transparent bridging is the factory default configuration of the Cisco uBR900 series cable access router. To change the configuration of your cable access router from bridging to rout...
Page 40 - Verifying Routing
Configuring Routing 40 Cisco IOS Release 12.0(7)T Verifying Routing To verify that bridging is not configured, routing is enabled, and that Routing Information Protocol is configured on the interfaces, enter the show startup-config command: uBR924# show startup-config Building configuration... Curre...
Page 41 - Configuring Bridging; reconfigure
Configuring Bridging Configuring the Cisco uBR900 Series Cable Access Routers 41 Configuring Bridging The Cisco uBR900 series cable access router is configured for DOCSIS-compliant transparent bridging by default. If it becomes necessary to reconfigure the unit for bridging after it has been configu...
Page 42 - Verifying Bridging; command from privileged EXEC mode:
Configuring Bridging 42 Cisco IOS Release 12.0(7)T When the cable interface comes up, the IP address and downstream channel are configured automatically. Note To configure multiple PCs, repeat Steps 4 through 7 above for each additional PC. You can connect a maximum of three PCs to the Cisco uBR900 ...
Page 43 - Reestablishing DOCSIS-Compliant Bridging; Cisco uBR924 Cable Access Router; Verifying DOCSIS-Compliant Bridging
Reestablishing DOCSIS-Compliant Bridging Configuring the Cisco uBR900 Series Cable Access Routers 43 interface cable-modem0 no ip address no ip directed-broadcast no ip route-cache no keepalive cable-modem downstream saved channel 699000000 36 bridge-group 59 bridge-group 59 spanning-disabled ! ip c...
Page 44 - Customizing the Cable Access Router Interface; Specify cable access router interface 0.
Customizing the Cable Access Router Interface 44 Cisco IOS Release 12.0(7)T voice-port 0 ! ! voice-port 1 ! ! interface Ethernet0 no ip address no ip directed-broadcast no ip route-cache bridge-group 59 bridge-group 59 spanning-disabled ! interface cable-modem0 no ip address no ip directed-broadcast...
Page 45 - Using Multiple PCs with the Cable Access Router; Use the; command on the Cisco uBR7200 series router to; Enable a faster downstream search algorithm.
Using Multiple PCs with the Cable Access Router Configuring the Cisco uBR900 Series Cable Access Routers 45 Using Multiple PCs with the Cable Access Router The MAX CPE parameter in the DOCSIS configuration file determines how many PCs or other CPE devices are supported by a particular cable access r...
Page 46 - Configuration Examples; Basic Internet Access Bridging Configuration
Configuration Examples 46 Cisco IOS Release 12.0(7)T Configuration Examples This section provides the following configuration examples: • Basic Internet Access Bridging Configuration on page 46 • Basic Internet Access Routing Configuration on page 47 • Multicast-Enabled Routing Configuration on page...
Page 47 - Basic Internet Access Routing Configuration; no cable-modem compliant; command must be used. In addition, the; bridge group 59; command must be removed from
Basic Internet Access Routing Configuration Configuring the Cisco uBR900 Series Cable Access Routers 47 line con 0 transport input none line vty 0 4 login ! end Basic Internet Access Routing Configuration The Cisco uBR900 series cable access router can be configured to act as a router to preserve IP...
Page 48 - Multicast-Enabled Routing Configuration
Configuration Examples 48 Cisco IOS Release 12.0(7)T Multicast-Enabled Routing Configuration The following configuration is for a Cisco uBR900 series that uses PIM sparse-dense mode and belongs to a specific multicast group. Other multicast routing protocols such as PIM sparse-mode or PIM dense-mode...
Page 49 - VoIP Bridging Configuration Using H.323v2
VoIP Bridging Configuration Using H.323v2 Configuring the Cisco uBR900 Series Cable Access Routers 49 VoIP Bridging Configuration Using H.323v2 In this example, the Cisco uBR900 series is configured for bridging, with an H.323v2 dial peer to another Cisco uBR900 series attached to the same downstrea...
Page 50 - VoIP Routing Configuration Using H.323v2
Configuration Examples 50 Cisco IOS Release 12.0(7)T VoIP Routing Configuration Using H.323v2 In this example, the Cisco uBR900 series is configured for IP routing, with an H.323v2 dial peer to another Cisco uBR900 series attached to the same downstream interface on the headend CMTS. Current configu...
Page 51 - NAT/PAT Configuration
NAT/PAT Configuration Configuring the Cisco uBR900 Series Cable Access Routers 51 line con 0 exec-timeout 0 0 transport input none line vty 0 4 login ! ! end NAT/PAT Configuration Current configuration: ! ! No configuration change since last restart ! version 12.0 no service pad service timestamps d...
Page 52 - VoIP Bridging Configuration Using SGCP; The call agent IP address is specified.
Configuration Examples 52 Cisco IOS Release 12.0(7)T VoIP Bridging Configuration Using SGCP In this example, Cisco uBR924 is configured to support VoIP in bridging mode using SGCP. Note the following in the sample configuration file: • SGCP is enabled. • The call agent IP address is specified. • The...
Page 53 - IPSec Configuration
IPSec Configuration Configuring the Cisco uBR900 Series Cable Access Routers 53 ! interface cable-modem0 ip address 188.186.1.14 255.255.0.0 no ip directed-broadcast no ip route-cache no ip mroute-cache cable-modem downstream saved channel 699000000 27 bridge-group 59 bridge-group 59 spanning-disabl...
Page 54 - L2TP Configuration
Configuration Examples 54 Cisco IOS Release 12.0(7)T crypto ipsec transform-set test-transform ah-md5-hmac esp-des esp-md5-hmac ! crypto map test-ipsec local-address cable-modem0 crypto map test-ipsec 10 ipsec-isakmp set peer 30.1.1.1 set transform-set test-transform match address 100 ! interface Et...
Page 56 - Command Reference; Voice over IP for the Cisco AS5300
Command Reference 56 Cisco IOS Release 12.0(7)T Command Reference This section describes the following cable-modem interface commands for the Cisco uBR900 series cable access router for Cisco IOS Release 12.0(7)T: • cable-modem compliant bridge • cable-modem downstream saved channel • cable-modem fa...
Page 57 - cable-modem compliant; Release; This command was introduced.
cable-modem compliant bridge Configuring the Cisco uBR900 Series Cable Access Routers 57 cable-modem compliant bridge To enable DOCSIS-compliant transparent bridging for a cable access router interface at startup, use the cable-modem compliant command from interface configuration mode. Use the no fo...
Page 58 - Related Commands; Command Description
cable-modem compliant bridge 58 Cisco IOS Release 12.0(7)T Related Commands Command Description cable-modem downstream saved channel Modifies the saved downstream channel setting and upstream power value on the cable interface of a Cisco uBR900 series. cable-modem fast-search Enables a faster downst...
Page 63 - cable-modem upstream preamble qpsk; cable-modem upstream preamble qpsk
cable-modem upstream preamble qpsk Configuring the Cisco uBR900 Series Cable Access Routers 63 cable-modem upstream preamble qpsk To enable the QPSK modulation scheme in the upstream direction from the cable access router interface to the headend, enter the cable-modem upstream preamble qpsk command...
Page 65 - the; This command was introduced.
cable-modem voip best-effort Configuring the Cisco uBR900 Series Cable Access Routers 65 cable-modem voip best-effort To allow voice calls to be sent upstream over the cable interface via best effort, use the cable-modem voip best-effort command from interface configuration mode. To disable best-eff...
Page 67 - interface cable-modem; interface; command from global configuration mode.; interface cable-modem; number; number
interface cable-modem Configuring the Cisco uBR900 Series Cable Access Routers 67 interface cable-modem To specify the cable interface on a Cisco uBR900 series cable access router, enter the interface cable-modem command from global configuration mode. interface cable-modem number Syntax Description...
Page 69 - show bridge cable-modem; command from privileged EXEC mode.; show bridge cable-modem; Syntax Description; No default behavior or values.; Command Modes; Privileged EXEC; Command History; Following is a sample output for this command:; Table 5 describes the significant fields shown in the display.; Table 5; Total of 300 station blocks
show bridge cable-modem Configuring the Cisco uBR900 Series Cable Access Routers 69 show bridge cable-modem To display bridging information for a Cisco uBR900 series cable access router, enter the show bridge cable-modem command from privileged EXEC mode. show bridge cable-modem number Syntax Descri...
Page 70 - show controllers cable-modem
show bridge cable-modem 70 Cisco IOS Release 12.0(7)T Related Commands Command Description show controllers cable-modem Displays the current DHCP settings on point-to-point interfaces. show interfaces cable-modem Displays information about the cable interface on the Cisco uBR900 series cable access ...
Page 71 - command in privileged EXEC mode.; The; display begins with information from the first few registers of
show controllers cable-modem Configuring the Cisco uBR900 Series Cable Access Routers 71 show controllers cable-modem To display high-level controller information about a Cisco uBR900 series cable access router, use the show controllers cable-modem command in privileged EXEC mode. show controllers c...
Page 72 - Examples; Following is sample output for the
show controllers cable-modem 72 Cisco IOS Release 12.0(7)T Examples Following is sample output for the show controllers cable-modem 0 command: uBR924# show controllers cable-modem 0 BCM Cable interface 0: BCM3300 unit 0, idb 0x200EB4, ds 0x82D4748, regaddr = 0x800000, reset_mask 0x80 station address...
Page 73 - Table 6
show controllers cable-modem Configuring the Cisco uBR900 Series Cable Access Routers 73 ehdr: 01 06 02 74 34 11 01 status=0x00 bd_index=0x0001 len=0x0000 hdr_len=0x0000 ehdr: 01 06 02 74 34 11 02 status=0x00 bd_index=0x0002 len=0x0000 hdr_len=0x0000 ehdr: 01 06 02 74 34 11 03 status=0x00 bd_index=0...
Page 77 - show controllers cable-modem bpkm; bpkm
show controllers cable-modem bpkm Configuring the Cisco uBR900 Series Cable Access Routers 77 show controllers cable-modem bpkm To display information about the baseline privacy key management exchange between the Cisco uBR900 series cable access router and the headend CMTS, use the show controllers...
Page 78 - Table 7
show controllers cable-modem bpkm 78 Cisco IOS Release 12.0(7)T Table 7 describes the fields shown in the display. Related Commands Table 7 show controllers cable-modem bpkm Field Descriptions Field Description authorization wait time The number of seconds the Cisco uBR900 series waits for a reply a...
Page 79 - show controllers cable-modem des; des; DES engine registers are displayed in the following example:
show controllers cable-modem des Configuring the Cisco uBR900 Series Cable Access Routers 79 show controllers cable-modem des 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 c...
Page 80 - Table 8; Table showing downstream DES keys.
show controllers cable-modem des 80 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...
Page 81 - show controllers cable-modem filters; filters
show controllers cable-modem filters Configuring the Cisco uBR900 Series Cable Access Routers 81 show controllers cable-modem filters To display the registers in the MAC hardware that are used for filtering received frames, use the show controllers cable-modem filters command in privileged EXEC mode...
Page 82 - Table 9
show controllers cable-modem filters 82 Cisco IOS Release 12.0(7)T Examples MAC and SID filter information is displayed in the following example: uBR924# show controllers cable-modem 0 filters downstream mac message processing: ds_mac_da_filters: filter_1=0010.7b43.aa01, filter_2=0000.0000.0000 filt...
Page 83 - Minislots per request
show controllers cable-modem filters Configuring the Cisco uBR900 Series Cable Access Routers 83 Related Commands Minislots per request Length of each registration request in mini-slots. burst_maps Maps the burst profiles saved in the BCM3037 registers to interval usage codes (IUCs). bytes_per_minis...
Page 84 - show controllers cable-modem lookup-table
show controllers cable-modem lookup-table 84 Cisco IOS Release 12.0(7)T show controllers cable-modem lookup-table To display the mini-slot lookup table inside a Cisco uBR900 series, use the show controllers cable-modem lookup-table command in privileged EXEC mode. show controllers cable-modem number...
Page 85 - The mini-slot lookup table is displayed in the following example:
show controllers cable-modem lookup-table Configuring the Cisco uBR900 Series Cable Access Routers 85 Examples The mini-slot lookup table is displayed in the following example: uBR924# show controllers cable-modem 0 lookup-table Max Burst Size (minislots) = 0x6 Max Burst Length (bytes) = 0x4B PHY Ov...
Page 88 - show controllers cable-modem mac; command to view MAC log messages.
show controllers cable-modem mac 88 Cisco IOS Release 12.0(7)T show controllers cable-modem mac To display detailed MAC-layer information for a Cisco uBR900 series, use the show controllers cable-modem mac command in privileged EXEC mode. show controllers cable-modem number mac [ errors | hardware |...
Page 89 - Example 1
show controllers cable-modem mac Configuring the Cisco uBR900 Series Cable Access Routers 89 Example 1 The following sample display shows the MAC log file for a cable-modem interface that has successfully registered with the CMTS: uBR924# show controllers cable-modem 0 mac log 00:14:24: 864.124 CMAC...
Page 90 - Example 2
show controllers cable-modem mac 90 Cisco IOS Release 12.0(7)T 00:14:32: 872.856 CMAC_LOG_RANGING_SUCCESS 00:14:32: 872.874 CMAC_LOG_STATE_CHANGE dhcp_state 00:14:33: 873.386 CMAC_LOG_DHCP_ASSIGNED_IP_ADDRESS 188.188.1.62 00:14:33: 873.388 CMAC_LOG_DHCP_TFTP_SERVER_ADDRESS 4.0.0.32 00:14:33: 873.392...
Page 91 - Example 3; command shows only the entries in the MAC log
show controllers cable-modem mac Configuring the Cisco uBR900 Series Cable Access Routers 91 This output indicates that the Cisco uBR900 series 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 ...
Page 92 - Possible but Uncommon Cable Interface Reset Causes
show controllers cable-modem mac 92 Cisco IOS Release 12.0(7)T The following example indicates that an event in the cable interface driver caused the interface to reset. This often occurs because a shut or clear command is currently being issued on the interface. uBR924# show controllers cable-modem...
Page 93 - Possible but Uncommon Cable Interface Reset Causes (continued)
show controllers cable-modem mac Configuring the Cisco uBR900 Series Cable Access Routers 93 CMAC_LOG_RESET_SERVICE_NOT_AVAILABLE The CMTS has failed the Cisco uBR900 series’ registration because a required or requested class of service is not available. CMAC_LOG_RESET_T6_RETRIES_EXHAUSTED The CMTS ...
Page 94 - Example 4; The following example display for the; command
show controllers cable-modem mac 94 Cisco IOS Release 12.0(7)T Example 4 The following example display for the show controllers cable-modem 0 mac hardware command shows the detailed configuration of the interface driver and the MAC-layer hardware. The most interesting bit is the station address (har...
Page 96 - show controllers cable-modem MIB Statistics Field Descriptions
show controllers cable-modem mac 96 Cisco IOS Release 12.0(7)T burst profiles: profile 0: 01 19 1D 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 profile 1: 01 19 1...
Page 97 - Example 5; show controllers cable-modem mac state; command summarizes the state of the cable MAC
show controllers cable-modem mac Configuring the Cisco uBR900 Series Cable Access Routers 97 Example 5 The show controllers cable-modem mac state command summarizes the state of the cable MAC layer and provides a list of downstream search frequency bands and the order in which they are searched. If ...
Page 99 - Table 12 describes the fields shown in the display.
show controllers cable-modem mac Configuring the Cisco uBR900 Series Cable Access Routers 99 COS 1: Assigned SID: 5 Max Downstream Rate: 4000000 Max Upstream Rate: 2000000 Upstream Priority: 7 Min Upstream Rate: 100000 Max Upstream Burst: 12 Privacy Enable: TRUE Ranging Backoff Start: 0 (at initial ...
Page 101 - Field
show controllers cable-modem mac Configuring the Cisco uBR900 Series Cable Access Routers 101 Scrambler Seed 15-bit seed value loaded at the beginning of each burst after the register has been cleared. Not used if scrambler is off. Maximum Burst Size Maximum number of mini-slots that can be transmit...
Page 103 - show controllers cable-modem phy; show controllers cable-modem phy; command in; show controllers cable-modem phy; receive; transmit
show controllers cable-modem phy Configuring the Cisco uBR900 Series Cable Access Routers 103 show controllers cable-modem phy To display the contents of the registers used in the downstream physical hardware of the Cisco uBR900 series cable access router, use the show controllers cable-modem phy co...
Page 106 - show controllers cable-modem tuner; show controllers cable-modem tuner; show controllers cable-modem tuner; There are no key words or arguments for this command.; Defaults
show controllers cable-modem tuner 106 Cisco IOS Release 12.0(7)T show controllers cable-modem tuner To display the settings for the upstream and downstream tuners used by a Cisco uBR900 series cable access router, use the show controllers cable-modem tuner command in privileged EXEC mode. show cont...
Page 107 - show controllers cable-modem tuner Field Descriptions
show controllers cable-modem tuner Configuring the Cisco uBR900 Series Cable Access Routers 107 Table 13 show controllers cable-modem tuner Field Descriptions Related Commands Field Description tuner_freq Indicates the current downstream frequency. symbol_rate Indicates the downstream symbol rate in...
Page 108 - show dhcp
show dhcp 108 Cisco IOS Release 12.0(7)T show dhcp To display the current DHCP settings on point-to-point interfaces, enter the show dhcp command from privileged EXEC mode. show dhcp { lease | server } Syntax Description Defaults No default behavior or values. Command Modes Privileged EXEC Command H...
Page 109 - Table 15 describes the significant fields shown in the display.
show dhcp Configuring the Cisco uBR900 Series Cable Access Routers 109 Following is sample output for the show dhcp server command: uBR924# show dhcp server DHCP server: ANY (255.255.255.255) Leases: 1 Offers: 1 Requests: 2 Acks: 1 Naks: 0 Declines: 0 Releases: 0 Bad: 0 TFTP Server Name: SOHOSERVER ...
Page 110 - show dhcp server Field Descriptions (continued)
show dhcp 110 Cisco IOS Release 12.0(7)T Related Commands Acks Number of ‘acknowledge’ messages sent by the server to the proxy-client. Naks Number of ‘not acknowledge’ messages sent by the server to the proxy-client. Declines Number of offers from the server that have been declined by the proxy-cli...
Page 111 - show interfaces cable-modem; command from either user EXEC mode or privileged EXEC mode.; User EXEC or privileged EXEC; Bridging
show interfaces cable-modem Configuring the Cisco uBR900 Series Cable Access Routers 111 show interfaces cable-modem To display information about the Cisco uBR900 series cable access router’s cable interface, enter the show interfaces cable-modem command from either user EXEC mode or privileged EXEC...
Page 112 - Table 16 describes the significant fields shown in the display.
show interfaces cable-modem 112 Cisco IOS Release 12.0(7)T Examples Traffic passing through the cable access router interface is shown in the following example: uBR924# show interfaces cable-modem 0 cable-modem0 is up, line protocol is up Hardware is BCM3300, address is 0050.7366.2439 (bia 0050.7366...
Page 115 - accounting; option with the; show interface cable-modem; Table 17 describes the fields shown in this display.; Table 18 describes the counters shown in this display.
show interfaces cable-modem Configuring the Cisco uBR900 Series Cable Access Routers 115 To display the number of packets and bytes of each protocol type passing through the cable access router interface, use the accounting option with the show interface cable-modem command: uBR924# show interface c...
Page 117 - Act
show interfaces cable-modem Configuring the Cisco uBR900 Series Cable Access Routers 117 Related Commands Act Action to be taken when this address is looked up; choices are to receive or discard the packet. Type MAC address type. Command Description cable-modem compliant bridge Enables DOCSIS-compli...
Page 118 - Debug Commands
Debug Commands 118 Cisco IOS Release 12.0(7)T Debug Commands Note Troubleshooting the Cisco uBR900 series cable access router is typically accomplished using the CMTS at the cable operator’s headend facility; it is rarely done by directly accessing the Cisco uBR924. For information on troubleshootin...
Page 119 - debug cable-modem bpkm
debug cable-modem bpkm Configuring the Cisco uBR900 Series Cable Access Routers 119 debug cable-modem bpkm To debug baseline privacy information on a Cisco uBR900 series, use the debug cable-modem bpkm command in privileged EXEC mode. To turn the debugging messages off, use the no form of this comma...
Page 120 - debug cable-modem bridge; Debugs Cisco uBR900 series interrupts.; debug cable-modem mac; Troubleshoots the Cisco uBR900 series MAC layer.; debug cable-modem map
debug cable-modem bpkm 120 Cisco IOS Release 12.0(7)T Related Commands Command Description debug cable-modem bridge Debugs bridge filter processing information on a Cisco uBR900 series cable access router. debug cable-modem error Enables debugging messages for the cable interface driver on a Cisco u...
Page 122 - Debugs baseline privacy information on a Cisco uBR900 series.; debug cable-modem error
debug cable-modem bridge 122 Cisco IOS Release 12.0(7)T Related Commands Command Description debug cable-modem bpkm Debugs baseline privacy information on a Cisco uBR900 series. debug cable-modem error Enables debugging messages for the cable interface driver on a Cisco uBR900 series. debug cable-mo...
Page 125 - debug cable-modem interrupts; debug cable-modem interrupts
debug cable-modem interrupts Configuring the Cisco uBR900 Series Cable Access Routers 125 debug cable-modem interrupts To debug Cisco uBR900 series 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. ...
Page 128 - This example shows sample display output from the
debug cable-modem mac 128 Cisco IOS Release 12.0(7)T Examples Example 1 This example shows sample display output from the debug cable-modem mac log command. The fields of the output are the time since bootup, the log message, and in some cases a parameter that gives more detail about the log entry. ...
Page 129 - debug cable mac messages
debug cable-modem mac Configuring the Cisco uBR900 Series Cable Access Routers 129 0 events dropped due to lack of a chunk The line “ 0 events dropped due to lack of a chunk ” at the end of a display indicates that no log entries were discarded due to a temporary lack of memory. This means the log i...
Page 135 - Glossary
Glossary Configuring the Cisco uBR900 Series Cable Access Routers 135 Glossary broadband —Transmission system that combines multiple independent signals onto one cable. In the cable industry, broadband refers to the frequency-division multiplexing of many signals in a wide bandwidth of RF frequencie...
Page 137 - spectrum reuse; —An alternate term for cable access router. See; upstream
Glossary Configuring the Cisco uBR900 Series Cable Access Routers 137 spectrum reuse —CATV’s most fundamental concept. Historically, the over-the-air spectrum has been assigned to many purposes other than that of carrying TV signals. This has resulted in an inadequate supply of spectrum to serve the...
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