Cisco uBR904 Specifications

Bridging and Routing Features for the Cisco uBR904 Cable Modem 1Bridging and Routing Features for theCisco uBR904 Cable ModemThe following sections a

Configuration Tasks10Cisco IOS Release 12.0(3)T• Exit global configuration mode and attempt to reenter it using the new enable password:cisco# exitcisc

Configuring Routing Bridging and Routing Features for the Cisco uBR904 Cable Modem 11Configuring RoutingIf you have one or more PCs directly connected

Configuration Tasks12Cisco IOS Release 12.0(3)TVerifying RoutingTo verify that bridging is not configured, routing is enabled, and that Routing Informa

Configuring Bridging Bridging and Routing Features for the Cisco uBR904 Cable Modem 13Configuring BridgingThe Cisco uBR904 cable modem is configured for

Configuration Tasks14Cisco IOS Release 12.0(3)TWhen the cable interface comes up, the IP address and downstream channel are configuredautomatically.Not

Reestablishing Plug-and-Play Bridging Bridging and Routing Features for the Cisco uBR904 Cable Modem 15Reestablishing Plug-and-Play BridgingTo erase t

Configuration Tasks16Cisco IOS Release 12.0(3)TCustomizing the Cable Modem InterfaceDifferent geographical regions and different cable plants use diff

Sample Bridging Configuration Bridging and Routing Features for the Cisco uBR904 Cable Modem 17Configuration ExamplesSample Bridging ConfigurationThisis

Configuration Examples18Cisco IOS Release 12.0(3)TSample Routing ConfigurationThis is a typical routing configuration for the Cisco uBR904 cable modem.

Sample Routing Configuration Bridging and Routing Features for the Cisco uBR904 Cable Modem 19Command ReferenceThis section describes new and changed

Feature Summary2Cisco IOS Release 12.0(3)TFigure 1 Cisco uBR904 in a Bridging ConfigurationFigure 2 Cisco uBR904 in a Routing Configuration with a HubBe

Command Reference20Cisco IOS Release 12.0(3)Tcable-modem compliant bridgeTo enable DOCSIS-compliant transparent bridging for a cable modem interface a

cable-modem downstream saved channel Bridging and Routing Features for the Cisco uBR904 Cable Modem 21cable-modem downstream saved channelTo modify th

Command Reference22Cisco IOS Release 12.0(3)TRelated Commandscable-modem compliant bridgecable-modem fast-searchcable-modem upstream preamble qpskinte

cable-modem fast-search Bridging and Routing Features for the Cisco uBR904 Cable Modem 23cable-modem fast-searchTo enable a faster downstream search a

Command Reference24Cisco IOS Release 12.0(3)Tcable-modem upstream preamble qpskTo enable the QPSK modulation scheme in the upstream direction from the

interface cable-modem Bridging and Routing Features for the Cisco uBR904 Cable Modem 25interface cable-modemTo specify the cable modem interface on a

Command Reference26Cisco IOS Release 12.0(3)Tshow bridge cable-modemTo display bridging information for a cable modem, enter the show bridge cable-mod

show dhcp Bridging and Routing Features for the Cisco uBR904 Cable Modem 27show dhcpTo display the current DHCP settings on point-to-point interfaces,

Command Reference28Cisco IOS Release 12.0(3)TFollowing is sample output for the show dhcp server command:uBR904# show dhcp server DHCP server: ANY

show dhcp Bridging and Routing Features for the Cisco uBR904 Cable Modem 29Related Commandsinterface cable-modemip address-poolip dhcp-serverpeer defa

List of Terms Bridging and Routing Features for the Cisco uBR904 Cable Modem 3DHCP—Dynamic Host Configuration Protocol. This protocol provides a mechan

Command Reference30Cisco IOS Release 12.0(3)Tshow interfaces cable-modemTo display information about the Cisco uBR904 cable modem’s cable interface, e

show interfaces cable-modem Bridging and Routing Features for the Cisco uBR904 Cable Modem 31 Queueing strategy: fifo Output queue 0/40, 0 drops; in

Command Reference32Cisco IOS Release 12.0(3)TLast clearing of “show interface”countersTime at which the counters that measure cumulative statistics (s

show interfaces cable-modem Bridging and Routing Features for the Cisco uBR904 Cable Modem 33To display the number of packets and bytes of each protoc

Command Reference34Cisco IOS Release 12.0(3)TTable 5 describes the fields shown in this display.MIB counters on the cable interface are displayed in th

show interfaces cable-modem Bridging and Routing Features for the Cisco uBR904 Cable Modem 35Information about routing and bridging protocols and filte

Command Reference36Cisco IOS Release 12.0(3)TRelated Commandscable-mocem compliant bridgecable-modem downstream saved channelcable-modem fast-searchsh

show interfaces cable-modem Bridging and Routing Features for the Cisco uBR904 Cable Modem 37What to Do NextFor additional software configuration infor

What to Do Next38Cisco IOS Release 12.0(3)T

Prerequisites4Cisco IOS Release 12.0(3)TPrerequisitesIn order to use the Cisco uBR904 cable modem for data-over-cable applications, the followingcondi

List of Terms Bridging and Routing Features for the Cisco uBR904 Cable Modem 5• Cable Device MIB—Records statistics related to the configuration and st

Functional Description6Cisco IOS Release 12.0(3)TFigure 3 CMTS to Cable Modem Network Sample TopologyIP-relatedATM, FDDI, 100BT...100BTAnalog TVDigita

Configuration Options Bridging and Routing Features for the Cisco uBR904 Cable Modem 7Configuration OptionsThe Cisco uBR904 cable modem is usually confi

Configuration Tasks8Cisco IOS Release 12.0(3)TRoutingIn this application, the cable modem acts as a router to connect to existing networks. A typical

Configuring a Host Name and Password Bridging and Routing Features for the Cisco uBR904 Cable Modem 9Configuring a Host Name and PasswordOne of the firs