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Linksys WCM300 Cisco Cable Wideband Solution Design and Implementation Guide, - Page 55

DOCSIS Configuration File for Wideband on Linksys WCM300 Modems, Primary Bonding Group ID

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Chapter 4 Implementing and Configuring the Solution Wideband Cable Modem Behavior DOCSIS Configuration File for Wideband on Linksys WCM300 Modems The Linksys WCM300 wideband cable modem obtains a DOCSIS configuration file as it does in DOCSIS 2.0. For wideband operation, the file may contain three wideband-related Type/Length/Value (TLV) encodings. • Primary bonding group ID • Bonded channel enable • Secondary bonding group ID Note The preceding TLVs can optionally be specified in the DOCSIS configuration file. These TLVs are not required for the Linksys WCM300 modem to operate in wideband mode (w-online). All three TLVs are encoded as vendor-specific options (type 43) to facilitate interoperability and reduce future compatibility issues. Primary Bonding Group ID The primary bonding group ID option is encoded as subtype 14: • Type.Subtype: 43.14 • Length: 2 • Value: primary bonding group ID The primary bonding group ID option allows the provisioning system to force the wideband cable modem to use a particular primary bonded downstream channel. The modem can use a single primary bonded channel for unicast and multicast traffic. When the primary bonding group ID value is present, the CMTS assigns the wideband cable modem to the wideband-channel interface identified by the configured bonding group ID. If the CMTS is unable to assign the wideband cable modem to the wideband-channel interface specified by the configured bonding group ID, the CMTS causes the wideband cable modem to fail registration. Only a single occurrence of the primary bonding channel ID option may be specified in the DOCSIS configuration file. The total of the RF channels in the primary and secondary bonded channels must comply with the 50 MHz capture-window limitation of the Linksys WCM300 modem. Note If a wideband channel is specified as a primary bonded channel in the DOCSIS configuration file, the channel must be identically specified as a primary bonded channel in the CMTS active, running configuration file. The cable bonding-group-id command specifies whether a bonding group is a primary or secondary bonding group. For information on this command, see the Cisco uBR10012 Universal Broadband Router SIP and SPA Software Configuration Guide. Bonded Channel Enable The bonded channel enable option is encoded as subtype 15: • Type.Subtype: 43.15 • Length: 1 • Value: 0 equals Disable, and 1 equals Enable OL-10705-02 Cisco Cable Wideband Solution Design and Implementation Guide, Release 1.0 4-7

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

Match case Limit results 1 per page

4-7

Cisco Cable Wideband Solution Design and Implementation Guide, Release 1.0

OL-10705-02

Chapter 4

Implementing and Configuring the Solution

Wideband Cable Modem Behavior

DOCSIS Configuration File for Wideband on Linksys WCM300 Modems

The Linksys WCM300 wideband cable modem obtains a DOCSIS configuration file as it does in

DOCSIS 2.0. For wideband operation, the file may contain three wideband-related

Type/Length/Value (TLV) encodings.

•

Primary bonding group ID

•

Bonded channel enable

•

Secondary bonding group ID

Note

The preceding TLVs can optionally be specified in the DOCSIS configuration file. These TLVs are

not

required

for the Linksys WCM300 modem to operate in wideband mode (w-online).

All three TLVs are encoded as vendor-specific options (type 43) to facilitate interoperability and reduce

future compatibility issues.

Primary Bonding Group ID

The primary bonding group ID option is encoded as subtype 14:

•

Type.Subtype: 43.14

•

Length: 2

•

Value: primary bonding group ID

The primary bonding group ID option allows the provisioning system to force the wideband cable

modem to use a particular primary bonded downstream channel. The modem can use a single primary

bonded channel for unicast and multicast traffic. When the primary bonding group ID value is present,

the CMTS assigns the wideband cable modem to the wideband-channel interface identified by the

configured bonding group ID. If the CMTS is unable to assign the wideband cable modem to the

wideband-channel interface specified by the configured bonding group ID, the CMTS causes the

wideband cable modem to fail registration.

Only a single occurrence of the primary bonding channel ID option may be specified in the DOCSIS

configuration file. The total of the RF channels in the primary and secondary bonded channels must

comply with the 50 MHz capture-window limitation of the Linksys WCM300 modem.

Note

If a wideband channel is specified as a primary bonded channel in the DOCSIS configuration file, the

channel

must be identically specified

as a primary bonded channel in the CMTS active, running

configuration file. The

cable bonding-group-id

command specifies whether a bonding group is a

primary or secondary bonding group. For information on this command, see the

Cisco uBR10012

Universal Broadband Router SIP and SPA Software Configuration Guide

Bonded Channel Enable

The bonded channel enable option is encoded as subtype 15:

•

Type.Subtype: 43.15

•

Length: 1

•

Value: 0 equals Disable, and 1 equals Enable