Cisco Systems MC-607 manual MC-629

Page 23

Configuring Subscriber-End Broadband Access Router Features

Subscriber-End Broadband Access Router Initial Power-Up Sequence

Table 40 Cable Access Router Initialization Sequences and Events (continued)

Sequence

Event

Description

 

 

 

 

 

 

7.

Transfer operational

 

Using TFTP, the router downloads the specified

 

 

parameters.

 

DOCSIS configuration file and configures itself for the

 

 

 

 

appropriate parameters. The DOCSIS configuration

 

 

 

 

file defines the router operating mode such as the

 

 

 

 

provisioned downstream and upstream service

 

 

 

 

assignments, including assigned frequencies, data

 

 

 

 

rates, modulation schemes, CoS, type of services to

 

 

 

 

support, and other parameters. Cisco provides tools to

 

 

 

 

help automate the creation of configuration files.

 

 

 

 

 

 

 

 

 

 

 

Note

The DOCSIS configuration file must be in the

 

 

 

 

 

 

exact format given by the DOCSIS

 

 

 

 

 

 

specification. An incorrect DOCSIS

 

 

 

 

 

 

configuration file can cause the Cisco uBR900

 

 

 

 

 

 

series to constantly cycle offline. Such errors

 

 

 

 

 

 

include wrong downstream frequency, wrong

 

 

 

 

 

 

UCD, wrong downstream channel ID, invalid

 

 

 

 

 

 

CoS, incorrect BPI privacy configurations or

 

 

 

 

 

 

shared secret strings.

 

 

 

 

 

 

 

 

 

 

The cable access router sends another registration

 

 

 

 

request to the CMTS containing the CoS parameters

 

 

 

 

given in the DOCSIS configuration file.

 

 

 

 

The CMTS verifies that the router is using the

 

 

 

 

appropriate CoS profile and converts the temporary

 

 

 

 

SID into a data SID with a service class index that

 

 

 

 

points to the applicable CoS profile.

 

 

 

 

 

 

8.

Perform registration.

 

The router completes its secondary ranging and is then

 

 

 

 

online, passing data between the HFC network and the

 

 

 

 

PCs and other CPE devices that are connected to the

 

 

 

 

router.

 

 

 

 

 

 

9.

Comply with baseline privacy.

If baseline privacy is configured and enabled on both

 

 

 

 

the router and CMTS, the router and CMTS negotiate

 

 

 

 

the appropriate encryption/decryption parameters and

 

 

 

 

exchange keys for privacy. After encryption is enabled,

 

 

 

 

all information sent within Ethernet packets is

 

 

 

 

encrypted to prevent interception or modification by an

 

 

 

 

unauthorized party.

 

 

 

 

 

 

10.

Enter the operational

 

As soon as the Cisco uBR900 series cable access

 

 

maintenance state.

 

router has successfully completed the above sequence,

 

 

 

 

it enters operational maintenance state.

 

 

 

 

 

 

 

 

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 configuration file, the router uses TFTP to download the image and configuration file into its local memory. It then installs the new Cisco IOS image and runs the configuration file.

Cisco IOS Multiservice Applications Configuration Guide

MC-629

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Contents MC-607 Configuring Subscriber-End Broadband Access Router FeaturesMC-608 Cisco IOS Software Feature SetsSubscriber-end Overview MC-609 Base IP Bridging Feature SetHome Office Easy IP Feature Set MC-610 Small Office Feature SetTelecommuter Feature Set MC-611 Operating ModesMC-612 Data SpecificationsDescription Downstream Values Upstream Values MC-613 Service AssignmentsMC-614 Downstream and Upstream Data TransferBridging Applications MC-615 Routing ApplicationsNetwork Address Translation and Port Address Translation L2TP ProtocolEasy IP Dhcp ServerMC-617 Voice over IP OperationsSimplified VoIP over Cable Network MC-618MC-619 Voice Compression and DecompressionMC-620 Protocol StackMC-621 Subscriber-End Broadband Access Router Voice SpecificationsSgcp Protocol Stack Metric ValueMC-622 Backup Pots ConnectionMC-623 Docsis Baseline PrivacyIPSec Network Security MC-624 Triple Data Encryption StandardFirewall NetRanger Support-Cisco IOS Intrusion DetectionMC-625 Subscriber-End Broadband Access Router Configuration OptionsMC-626 MC-627 Event DescriptionMC-628 Sequence Event DescriptionMC-629 MC-630 MC-631 Cable Modem Initialization FlowchartMC-632 Subscriber-End Broadband Access Router Basic TroubleshootingWaitforlinkupstate MC-633UBR924# show controllers cable-modem 0 mac ? MC-634MC-635 Event 1-Wait for the Link to Come UpEvent 2-Scan for a Downstream Channel, then Synchronize MC-636 Event 4-Start Ranging for Power AdjustmentsEvent 3-Obtain Upstream Parameters MC-637 Event 5-Establish IP ConnectivityEvent 9-Perform Registration Event 6-Establish the Time of DayEvent 7-Establish Security Event 8-Transfer Operational ParametersMC-639 Event 11-Enter the Maintenance StateEvent 10-Comply with Baseline Privacy MC-640 Subscriber-End Broadband Access Router Configuration TasksMC-641 Configuring a Host Name and PasswordCommand Purpose MC-642 Configuring Ethernet and Cable Access Router InterfacesMC-643 Configuring RoutingMC-644 Verifying RoutingMC-645 Configuring BridgingMC-646 MC-647 Reestablishing DOCSIS-Compliant BridgingMC-648 Verifying DOCSIS-Compliant BridgingMC-649 Customizing the Cable Access Router InterfaceUsing Multiple PCs with the Cable Access Router MC-650 Basic Internet Access Bridging Configuration ExampleMC-651 Basic Internet Access Routing Configuration ExampleMC-652 IP Multicast Routing Configuration ExampleMC-653 VoIP Bridging Using H.323v2 Configuration ExampleMC-654 VoIP Routing Using H.323v2 Configuration ExampleMC-655 NAT/PAT Configuration ExampleMC-656 VoIP Bridging Using Sgcp Configuration ExampleMC-657 IPSec Configuration ExampleMC-658 L2TP Configuration ExampleMC-659 MC-660
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