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Chapter 5 Monitoring and Troubleshooting Wideband Components Monitoring Wideband Components • show cable modem errors • show cable modulation profile • show interface cable privacy show cable modem wideband To display information for registered and unregistered wideband cable modems, use the show cable modem wideband command. For example: Router# show cable modem wideband MAC Address IP Address 0014.bfbe.3cc0 1.11.0.1 0016.92f0.90d6 1.11.0.4 0014.bfbe.3cb8 1.11.0.2 0016.92f0.90d8 1.11.0.3 I/F MAC Prim State Sid C5/0/1/U0 w-online(pt) 3 C5/0/1/U0 w-online(pt) 5 C6/0/1/U0 w-online(pt) 3 C6/0/1/U0 w-online(pt) 5 WB Ch ID 24 24 36 36 DSID MD-DS-SG 24 N/A 272 1 36 N/A 274 1 With the show cable modem wideband command, you can specify a particular wideband cable modem by IP address or MAC address. You can also specify a set of wideband cable modems that are on a particular cable interface. Table 5-2 describes the fields that are shown in the show cable modem wideband display. Table 5-2 Descriptions for the show cable modem wideband Fields Field MAC Address IP Address I/F MAC State Prim SID WB Ch ID DSID MD-DS-SG Description The MAC address for the CM. The IP address that the DHCP server has assigned to the CM. The cable interface providing the upstream for this CM. The current state of the MAC layer. For information on MAC states, see the show cable modem wideband command in the Cisco Broadband Cable Command Reference Guide. The primary SID assigned to this CM. The identifier of the primary wideband channel. The Downstream Service Identifier. The MAC Domain Downstream Service Group, the downstream channels of a single MAC domain that reach the cable modem. If you specify show cable modem wideband registered-traditional-docsis, the command displays wideband-capable modems that are registered as DOCSIS 1.X or DOCSIS 2.0 modems. show cable modem summary To display summary information for cable modems including modems registered as wideband cable modems, use the show cable modem summary command. Router# show cable modem summary Interface Cable Modem Total Reg Unreg Offline Wideband C5/0/1/U0 2 2 0 0 2 C6/0/1/U0 2 2 0 0 2 initRC 0 0 Description initD initIO 0 0 0 0 initO 0 0 OL-10705-02 Cisco Cable Wideband Solution Design and Implementation Guide, Release 1.0 5-11

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

5-11

Cisco Cable Wideband Solution Design and Implementation Guide, Release 1.0

OL-10705-02

Chapter 5

Monitoring and Troubleshooting Wideband Components

Monitoring Wideband Components

•

show cable modem errors

•

show cable modulation profile

•

show interface cable privacy

show cable modem wideband

To display information for registered and unregistered wideband cable modems, use the

show cable

modem wideband

command. For example:

Router#

show cable modem wideband

MAC Address

IP Address

I/F

MAC

Prim

DSID MD-DS-SG

State

Sid

Ch ID

0014.bfbe.3cc0 1.11.0.1

C5/0/1/U0 w-online(pt)

N/A

0016.92f0.90d6 1.11.0.4

C5/0/1/U0 w-online(pt)

272

0014.bfbe.3cb8 1.11.0.2

C6/0/1/U0 w-online(pt)

N/A

0016.92f0.90d8 1.11.0.3

C6/0/1/U0 w-online(pt)

274

With the

show cable modem wideband

command, you can specify a particular wideband cable

modem by IP address or MAC address. You can also specify a set of wideband cable modems that are

on a particular cable interface.

Table 5-2

describes the fields that are shown in the

show cable modem wideband

display.

If you specify

show cable modem wideband

registered-traditional-docsis,

the command displays

wideband-capable modems that are registered as DOCSIS 1.X or DOCSIS 2.0 modems.

show cable modem summary

To display summary information for cable modems including modems registered as wideband cable

modems, use the

show cable modem summary

command.

Router#

show cable modem summary

Interface

Cable Modem

Description

Total Reg

Unreg Offline

Wideband

initRC initD initIO initO

C5/0/1/U0

C6/0/1/U0

Table 5-2

Descriptions for the show cable modem wideband Fields

Field

Description

MAC Address

The MAC address for the CM.

IP Address

The IP address that the DHCP server has assigned to the CM.

I/F

The cable interface providing the upstream for this CM.

MAC State

The current state of the MAC layer. For information on MAC states, see the

show cable modem wideband

command in the

Cisco Broadband Cable

Command Reference Guide

Prim SID

The primary SID assigned to this CM.

WB Ch ID

The identifier of the primary wideband channel.

DSID

The Downstream Service Identifier.

MD-DS-SG

The MAC Domain Downstream Service Group, the downstream channels of

a single MAC domain that reach the cable modem.