Linksys WCM300 Cisco Cable Wideband Solution Design and Implementation Guide, - Page 44

Multiservice Architecture, M-CMTS Interactions with Wideband Cable Modems, MAC Domains - firmware

Get Linksys WCM300 - Channel Bonded Cable Modem PDF manuals and user guides View all Linksys WCM300 manuals
Add to My Manuals
Save this manual to your list of manuals

Page 44 highlights

Modular CMTS Chapter 3 Cisco Cable Wideband Architecture Multiservice Architecture With M-CMTS architecture, the use of external edge QAM devices allows MSOs to use the same network resources for a video on demand (VOD) network and a Cisco wideband cable network. With updated firmware, some edge QAM devices can be used for VOD and for wideband channels though individual output QAM channels in the device cannot be shared. The wideband channel uses the edge QAM device for downstream data traffic, and uses the M-CMTS's uBR10-MC5X20 cable interface line card for upstream traffic and for downstream MAC management and signaling messages. In the Cisco Cable Wideband Solution, Release 1.0, traditional DOCSIS 1.X/2.0 services are supported by the CMTS; uBR10-MC5X20 cable interface line cards (not edge QAM devices) are used for these services. A multiservice architecture (see Figure 3-4) with converged IP triple play (voice, data, and video services) on wideband channels is the ultimate goal for DOCSIS 3.0 services. Figure 3-4 M-CMTS Multiservice Architecture Video over MPEG-TS Video over IP Data over IP Voice over IP uBR10012 M-CMTS Core DOCSIS 3.0 Downstream Channel Bonding Edge QAM device Traditional DOCSIS 1.X/2.0 channels 190005 Note In the Cisco Cable Wideband Solution, Release 1.0, the uBR1012 router currently supports a data-only service on wideband channels. A Cisco Cable Wideband Solution, Release 1.0, system does not currently support video or voice on wideband channels. M-CMTS Interactions with Wideband Cable Modems The following sections provide information on interactions between the M-CMTS and wideband cable modems: • MAC Domains, page 3-6 • Addressing, page 3-7 • Security, page 3-7 • Quality of Service, page 3-8 MAC Domains A DOCSIS MAC Domain is a logical subcomponent of a CMTS and is responsible for implementing all DOCSIS functions on a set of downstream channels and upstream channels. All MAC Domain operations are performed by the Core CMTS's uBR10-MC5X20 cable interface line cards. A CMTS MAC Domain contains at least one downstream channel and at least one upstream channel. Each downstream channel or upstream channel is contained by a single MAC Domain. Cisco Cable Wideband Solution Design and Implementation Guide, Release 1.0 3-6 OL-10705-02

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
  • 80
  • 81
  • 82
  • 83
  • 84
  • 85
  • 86
  • 87
  • 88
3-6
Cisco Cable Wideband Solution Design and Implementation Guide, Release 1.0
OL-10705-02
Chapter 3
Cisco Cable Wideband Architecture
Modular CMTS
Multiservice Architecture
With M-CMTS architecture, the use of external edge QAM devices allows MSOs to use the same
network resources for a video on demand (VOD) network and a Cisco wideband cable network. With
updated firmware, some edge QAM devices can be used for VOD and for wideband channels though
individual output QAM channels in the device cannot be shared.
The wideband channel uses the edge QAM device for downstream data traffic, and uses the M-CMTS’s
uBR10-MC5X20 cable interface line card for upstream traffic and for downstream MAC management
and signaling messages.
In the Cisco Cable Wideband Solution, Release 1.0, traditional DOCSIS 1.X/2.0 services are supported
by the CMTS; uBR10-MC5X20 cable interface line cards (not edge QAM devices) are used for these
services.
A multiservice architecture (see
Figure 3-4
) with converged IP triple play (voice, data, and video
services) on wideband channels is the ultimate goal for DOCSIS 3.0 services.
Figure 3-4
M-CMTS Multiservice Architecture
Note
In the Cisco Cable Wideband Solution, Release 1.0, the uBR1012 router currently supports a data-only
service on wideband channels. A Cisco Cable Wideband Solution, Release 1.0, system does not
currently support video or voice on wideband channels.
M-CMTS Interactions with Wideband Cable Modems
The following sections provide information on interactions between the M-CMTS and wideband cable
modems:
•
MAC Domains, page 3-6
•
Addressing, page 3-7
•
Security, page 3-7
•
Quality of Service, page 3-8
MAC Domains
A DOCSIS MAC Domain is a logical subcomponent of a CMTS and is responsible for implementing all
DOCSIS functions on a set of downstream channels and upstream channels. All MAC Domain
operations are performed by the Core CMTS’s uBR10-MC5X20 cable interface line cards. A CMTS
MAC Domain contains at least one downstream channel and at least one upstream channel. Each
downstream channel or upstream channel is contained by a single MAC Domain.
190005
uBR10012
M-CMTS
Core
Video over MPEG-TS
Video over IP
Data over IP
Voice over IP
DOCSIS 3.0 Downstream
Channel Bonding
Traditional DOCSIS 1.X/2.0 channels
Edge QAM
device