Linksys WCM300 Cisco Cable Wideband Solution Design and Implementation Guide, - Page 51

4-3

Cisco Cable Wideband Solution Design and Implementation Guide, Release 1.0

OL-10705-02

Chapter 4

Implementing and Configuring the Solution

Wideband CMTS Configuration

Configuring the Wideband SIP and Wideband SPA

The wideband CMTS components that require configuration include the Cisco Wideband SIP and Cisco

Wideband SPA. Cisco IOS commands are issued on the uBR10012 router to configure the Wideband SIP

and SPA. An outline of the configuration tasks needed for the Wideband SIP and SPA is as follows:

•

Preprovisioning of the Wideband SIP and Wideband SPA

•

Setting General Configuration Values for the Wideband SPA

•

Configuring RF Channels

•

Configuring Fiber Nodes

•

Configuring Wideband Channels and Primary Downstream Channels as Virtual Bundle Members

•

Setting Optional Configuration Values

For information on the preceding tasks and for reference information on the Cisco IOS commands used

for Wideband SIP and SPA configuration, see the

Cisco uBR10012 Universal Broadband Router SIP and

SPA Software Configuration Guide

.

Configuring the Edge QAM Device Configuration

Edge QAM (EQAM) device configuration is device-specific and implementation-specific.

•

For the Scientific Atlanta Continuum DVP XDQA24 device, the

Continuum DVP eXtra Dense QAM

Array 24 Configuration Guide

contains configuration information. See the appendix “Cisco

Wideband Applications” in that document for information on configuring this EQAM device for

wideband.

•

For information on configuring other EQAM devices, refer to the device’s documentation.

Regardless of the edge QAM device or implementation, these items are used for Wideband SPA

configuration and must be configured on each EQAM device:

•

For the edge QAM device:

–

IP address of the EQAM device’s Gigabit Ethernet interface (input port)

–

MAC address of the EQAM device’s Gigabit Ethernet interface (input port)

•

For each of the EQAM device’s QAM outputs that will be used for a Wideband SPA RF channel:

–

Center frequency of the QAM output

–

UDP number of the QAM output

The IP address, MAC address, frequency, and UDP port configured on the edge QAM device are

specified when configuring RF channels on the CMTS. Be certain to verify that the RF-channel values

set with

rf-channel

(issued on the CMTS) match the values configured on the edge QAM device.

Note

If a Layer-2 Gigabit Ethernet switch is used to connect the Wideband SPA to the EQAM device, the MAC

address specified in the

rf-channel

command is the MAC address of the switch’s Gigabit Ethernet

interface.

An RF channel and EQAM configuration worksheet such as the one shown in

Table 4-2

may be useful

for coordinating Wideband SPA RF channel and EQAM device configuration. A Wideband SPA supports

either 18 or 24 RF channels depending on how the SPA is configured. For more information, see the

description of the

rf-channel

command in the

Cisco uBR10012 Universal Broadband Router SIP and

SPA Software Configuration Guide

.

Section	Page
Preface	7
Objectives	7
Document Revision History	7
Document Organization	8
Related Documentation	8
Conventions	10
Obtaining Documentation, Obtaining Support, and Cisco Security Guidelines	11
Solution Overview	13
Solution Description and Scope	13
Architecture and Scope	14
In Scope	14
Out of Scope	15
Solution Key Features	15
Solution Components	15
Cisco, Linksys, and Scientific Atlanta Equipment	16
Third-Party Equipment	16
Cisco Cable Wideband Components	17
Cisco Cable Wideband Add-on Components	17
Base CMTS Components	17
Base CMTS Component Requirements	20
Cable Interface Line Cards and Network Uplink Line Cards	21
Cisco uBR-MC5X20S/U/H and uBR10-MC5X20U-D Cable Interface Line Cards	21
Cisco Half-Height Gigabit Ethernet Line Card	23
Wideband CMTS Components	24
Wideband SIP and Wideband SPA	24
Cisco Wideband SIP	25
Cisco Wideband SPA	25
External Edge QAM Device	27
Number of EQAM Devices Required	27
Scientific Atlanta Continuum DVP XDQA24	28
Harmonic NSG 9116	28
Harmonic NSG 9000	28
Vecima Networks VistaLynx VL1000	29
Gigabit Ethernet Switch (Optional)	29
Wideband Cable Modems	30
Linksys WCM300 Wideband Cable Modem	30
Scientific Atlanta DPC2505 and EPC2505 Wideband Cable Modems	32
Wideband CMTS Redundancy and Resiliency	34
PRE2 Redundancy and Resiliency	35
Route Processor Redundancy Plus	35
DOCSIS Stateful Switchover	35
uBR10-MC5X20 Line Card Redundancy	35
Wideband SPA Redundancy and Resiliency	36
Wideband SPA Redundant Gigabit Ethernet Ports	36
Wideband Channel Resiliency	37
Edge QAM Redundancy	37
Where to Find Information on Solution Hardware Components	37
Cisco Cable Wideband Architecture	39
Wideband Channel Bonding	39
Software Configuration for Fiber Nodes	41
Virtual Interface Bundling for Primary Downstream Channels and Wideband Channels	41
Modular CMTS	42
Benefits of M-CMTS Architecture	43
Cost Effective Architecture	43
Multiservice Architecture	44
M-CMTS Interactions with Wideband Cable Modems	44
MAC Domains	44
Addressing	45
Security	45
Quality of Service	46
Gigabit Ethernet Switch Functionality	46
Edge QAM Device Functionality	46
Wideband Cable Modem Functionality	47
Wideband Cable Modem Design and Operation	47
Implementing and Configuring the Solution	49
Wideband CMTS Configuration	49
Configuring Base CMTS Components	49
Configuring Wideband CMTS Components	50
Configuring the Wideband SIP and Wideband SPA	51
Configuring the Edge QAM Device Configuration	51
Configuring the Gigabit Ethernet Switch	53
Wideband Cable Modem Behavior	54
Linksys WCM300-NA, WCM300-EURO, and WCM300-JP Modems	54
DOCSIS Configuration File for Wideband on Linksys WCM300 Modems	55
Primary Bonding Group ID	55
Bonded Channel Enable	55
Secondary Bonding Group ID	56
Scientific Atlanta DPC2505 and EPC2505 Modems	56
Automatic Adjustments During Scientific Atlanta DPC2505 and EPC 2505 Registration	57
CMTS Interactions with Wideband Cable Modems	57
Registration for Wideband Cable Modems	57
Load Balancing for Wideband Cable Modems	58
Supported MIBs	58
Known Restrictions	58
Monitoring and Troubleshooting Wideband Components	61
Monitoring Wideband Components	61
Monitoring Wideband SIPs	62
show diag	62
Monitoring Wideband SPAs	63
show hw-module bay oir	63
show diag	63
show controllers modular-cable	64
Monitoring Wideband Channels	66
show interface wideband-cable	66
Hardware Status and Line Protocol Status for a Wideband-Channel Cable Interface	67
show hw-module bay	67
Monitoring RF Channels	70
show hw-module bay	70
Monitoring Wideband Cable Modems	70
show cable modem wideband	71
show cable modem summary	71
Troubleshooting Wideband Components	73
Troubleshooting Wideband SIPs and Wideband SPAs	73
Performing Basic Troubleshooting on a Wideband SIP and Wideband SPA	73
Verifying That a Wideband SPA’s Active Gigabit Ethernet Port Is Up	74
Verifying That a Wideband SPA Is Correctly Configured for SPA-to-EQAM Communications	76
Verifying That a Wideband SPA Is Able to Communicate with the Edge QAM Device	76
Troubleshooting Wideband Channels	77
Verifying That a Wideband Channel is Up and Is Transmitting Packets	77
Verifying That a Wideband Channel is Configured Correctly	78
Troubleshooting Wideband Cable Modems	79
Pinging a Wideband Cable Modem	79
Verifying That a Wideband-Capable Cable Modem is Registered as a Wideband Modem	80
Verifying Other Information for Wideband Cable Modems	81
Index	83
A	83
B	83
C	83
D	84
E	85
F	85
G	85
H	85
I	85
J	85
L	85
M	86
N	86
O	86
P	86
Q	86
R	86
S	87
T	87
U	87
V	87

Linksys WCM300 Cisco Cable Wideband Solution Design and Implementation Guide, - Page 51

Configuring the Wideband SIP and Wideband SPA, Configuring the Edge QAM Device Configuration

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