Cisco uBR924 Dokumentacja Strona 1

Bridging and Routing Features for the Cisco uBR924 Cable Access Router 1Bridging and Routing Features for theCisco uBR924 Cable Access RouterFeature

List of Terms and Acronyms10Cisco IOS Release 12.0(5)TdBmV—Decibels with respect to one millivolt in a 75-ohm system. The unit of RF power used inCATV

Configuration Tasks Bridging and Routing Features for the Cisco uBR924 Cable Access Router 11QPSK—Quadrature Phase-Shift Keying.A digital modulation m

Configuring a Host Name and Password12Cisco IOS Release 12.0(5)TConfiguring a Host Name and PasswordOne of the first configuration tasks you might want t

Configuration, Verification, and Troubleshooting Tips Bridging and Routing Features for the Cisco uBR924 Cable Access Router 13• Exit global configurat

Configuring Routing14Cisco IOS Release 12.0(5)TConfiguring RoutingDOCSIS-compliant transparent bridging is the factory default configuration of the Cisc

Verifying Routing Bridging and Routing Features for the Cisco uBR924 Cable Access Router 15Verifying RoutingTo verify that bridging is not configured,

Configuring Bridging16Cisco IOS Release 12.0(5)TConfiguring BridgingThe Cisco uBR924 cable access router is configured for DOCSIS-compliant transparent

Verifying Bridging Bridging and Routing Features for the Cisco uBR924 Cable Access Router 17When the cable interface comes up, the IP address and down

Reestablishing DOCSIS-Compliant Bridging18Cisco IOS Release 12.0(5)Tinterface cable-modem0 no ip address no ip directed-broadcast no ip route-cache no

Customizing the Cable Access Router Interface Bridging and Routing Features for the Cisco uBR924 Cable Access Router 19voice-port 0!!voice-port 1!!int

Feature Overview2Cisco IOS Release 12.0(5)TFigure 2 Cisco uBR924 in a Routing Configuration with a HubThe Cisco uBR924 cable access router is referred

Configuration Examples20Cisco IOS Release 12.0(5)TConfiguration ExamplesThis section provides the following configuration examples:• Basic Internet Acce

Basic Internet Access Routing Configuration Bridging and Routing Features for the Cisco uBR924 Cable Access Router 21interface cable-modem0 ip address

Configuration Examples22Cisco IOS Release 12.0(5)Tinterface cable-modem0 ip address 172.16.1.42 255.255.0.0 no ip directed-broadcast cable-modem downs

VoIP Bridging Configuration Using H.323v2 Bridging and Routing Features for the Cisco uBR924 Cable Access Router 23interface cable-modem0 ip address 1

Configuration Examples24Cisco IOS Release 12.0(5)Tdial-peer voice 2 pots destination-pattern 6502 port 1!dial-peer voice 62 voip destination-pattern 6

VoIP Routing Configuration Using H.323v2 Bridging and Routing Features for the Cisco uBR924 Cable Access Router 25voice-port 0!voice-port 1!dial-peer

Configuration Examples26Cisco IOS Release 12.0(5)TNAT/PAT ConfigurationCurrent configuration:!! No configuration change since last restart!version 12.0

Command Reference Bridging and Routing Features for the Cisco uBR924 Cable Access Router 27Command ReferenceThis section describes the following cable

cable-modem compliant bridge28Cisco IOS Release 12.0(5)Tcable-modem compliant bridgeTo enable DOCSIS-compliant transparent bridging for a cable access

cable-modem compliant bridge Bridging and Routing Features for the Cisco uBR924 Cable Access Router 29Related CommandsCommand Descriptioncable-modem d

Configuration Options Bridging and Routing Features for the Cisco uBR924 Cable Access Router 3After the Cisco uBR924 is installed and the connected PC

cable-modem downstream saved channel30Cisco IOS Release 12.0(5)Tcable-modem downstream saved channelTo modify the saved downstream channel setting and

cable-modem downstream saved channel Bridging and Routing Features for the Cisco uBR924 Cable Access Router 31Related CommandsCommand Descriptioncable

cable-modem fast-search32Cisco IOS Release 12.0(5)Tcable-modem fast-searchTo enable a faster downstream search algorithm on a cable access router inte

cable-modem fast-search Bridging and Routing Features for the Cisco uBR924 Cable Access Router 33Related CommandsCommand Descriptioncable-modem compli

cable-modem upstream preamble qpsk34Cisco IOS Release 12.0(5)Tcable-modem upstream preamble qpskTo enable the QPSK modulation scheme in the upstream d

cable-modem upstream preamble qpsk Bridging and Routing Features for the Cisco uBR924 Cable Access Router 35Related CommandsCommand Descriptioncable-m

cable-modem voip best-effort36Cisco IOS Release 12.0(5)Tcable-modem voip best-effortTo allow voicecalls to be sent upstreamoverthe cable interface via

cable-modem voip best-effort Bridging and Routing Features for the Cisco uBR924 Cable Access Router 37Related CommandsCommand Descriptioncable-modem c

interface cable-modem38Cisco IOS Release 12.0(5)Tinterface cable-modemTo specify the cable interface on a Cisco uBR924 cable access router, enter the

interface cable-modem Bridging and Routing Features for the Cisco uBR924 Cable Access Router 39Related CommandsCommand Descriptioncable-modem complian

Feature Overview4Cisco IOS Release 12.0(5)TBridgingThe Cisco uBR924 cable access router complies with the DOCSIS standards for interoperable cableacce

show bridge cable-modem40Cisco IOS Release 12.0(5)Tshow bridge cable-modemTo display bridging information for a Cisco uBR924 cable access router, ente

show bridge cable-modem Bridging and Routing Features for the Cisco uBR924 Cable Access Router 41Related CommandsCommand Descriptionshow dhcp Displays

show dhcp42Cisco IOS Release 12.0(5)Tshow dhcpTo display the current DHCP settings on point-to-point interfaces, enter the show dhcp commandfrom privi

show dhcp Bridging and Routing Features for the Cisco uBR924 Cable Access Router 43Following is sample output for the show dhcp server command:uBR924

show dhcp44Cisco IOS Release 12.0(5)TRelated CommandsAcks Number of ‘acknowledge’ messages sent by the server to the proxy-client.Naks Number of ‘not

show interfaces cable-modem Bridging and Routing Features for the Cisco uBR924 Cable Access Router 45show interfaces cable-modemTo display information

show interfaces cable-modem46Cisco IOS Release 12.0(5)TExamplesTraffic passing through the cable access router interface is shown in the following exam

show interfaces cable-modem Bridging and Routing Features for the Cisco uBR924 Cable Access Router 47Last input/output Number of hours, minutes, and s

show interfaces cable-modem48Cisco IOS Release 12.0(5)TCRC Number of cyclic redundancy checksums generated by the originating LANstation or far-end de

show interfaces cable-modem Bridging and Routing Features for the Cisco uBR924 Cable Access Router 49To display the number of packets and bytes of eac

Routing Bridging and Routing Features for the Cisco uBR924 Cable Access Router 5RoutingThe Cisco uBR924 cable access router can also be configured to a

show interfaces cable-modem50Cisco IOS Release 12.0(5)TInformation about routing and bridging protocols and filtering on the cable access router interf

show interfaces cable-modem Bridging and Routing Features for the Cisco uBR924 Cable Access Router 51Related CommandsAct Actiontobetakenwhenthisaddres

Debug Commands52Cisco IOS Release 12.0(5)TDebug CommandsAll cable-modem debug commands used with the uBR924 cable access router are documented inTroub

Restrictions6Cisco IOS Release 12.0(5)TRestrictionsWhen using the Cisco uBR924 cable access router, keep the following restrictions and limitations in

Supported Platforms Bridging and Routing Features for the Cisco uBR924 Cable Access Router 7Supported PlatformsThe Cisco uBR924 cable access router is

Supported MIBs and RFCs8Cisco IOS Release 12.0(5)T• The CMTS system administrator must ensure appropriate databases are updated to activate andsupport

List of Terms and Acronyms Bridging and Routing Features for the Cisco uBR924 Cable Access Router 9— For more information about CiscoWorks on the Docu