Linksys WCM300 Cisco Cable Wideband Solution Design and Implementation Guide, - Page 37

Wideband Channel Resiliency, Edge QAM Redundancy

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Chapter 2 Cisco Cable Wideband Components Where to Find Information on Solution Hardware Components The show controllers modular-cable command shows the current state of the Wideband SPA's Gigabit Ethernet ports. With the Cisco IOS CLI, the Wideband SPA's Gigabit Ethernet ports are not specified on the command line as individual Gigabit Ethernet interfaces because the ports work in tandem as a redundant pair. Wideband Channel Resiliency If a wideband channel fails, the wideband cable modem goes offline and re-registers: • If another wideband channel is available for the service, the wideband cable modem tries that channel and comes online. • If no other wideband channel is available, the wideband cable modem comes online in traditional DOCSIS 2.0 mode. Edge QAM Redundancy Depending on the edge QAM device that is used, the edge QAM device can have varying degrees of redundancy. For information on a specific edge QAM device, see the vendor's documentation for that device. Where to Find Information on Solution Hardware Components Table 2-7 provides a list of the hardware installation documents that are most relevant to the Cisco Cable Wideband Solution's components. The complete list of uBR10012 hardware installation and upgrade guides are available at: http://www.cisco.com/en/US/products/hw/cable/ps2209/prod_installation_guides_list.html The Release Notes for Cisco uBR10012 Universal Broadband Router for Cisco IOS Release 12.3(21) BC are available at: http://www.cisco.com/univercd/cc/td/doc/product/cable/ubr10k/ub10krns/index.htm OL-10705-02 Cisco Cable Wideband Solution Design and Implementation Guide, Release 1.0 2-21

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2-21
Cisco Cable Wideband Solution Design and Implementation Guide, Release 1.0
OL-10705-02
Chapter 2
Cisco Cable Wideband Components
Where to Find Information on Solution Hardware Components
The
show controllers modular-cable
command shows the current state of the Wideband SPA’s Gigabit
Ethernet ports. With the Cisco IOS CLI, the Wideband SPA’s Gigabit Ethernet ports are not specified on
the command line as individual Gigabit Ethernet interfaces because the ports work in tandem as a
redundant pair.
Wideband Channel Resiliency
If a wideband channel fails, the wideband cable modem goes offline and re-registers:
•
If another wideband channel is available for the service, the wideband cable modem tries that
channel and comes online.
•
If no other wideband channel is available, the wideband cable modem comes online in
traditional DOCSIS 2.0 mode.
Edge QAM Redundancy
Depending on the edge QAM device that is used, the edge QAM device can have varying degrees of
redundancy. For information on a specific edge QAM device, see the vendor’s documentation for that
device.
Where to Find Information on Solution Hardware Components
Table 2-7
provides a list of the hardware installation documents that are most relevant to the Cisco Cable
Wideband Solution’s components. The complete list of uBR10012 hardware installation and upgrade
guides are available at:
The
Release Notes for Cisco uBR10012 Universal Broadband Router for Cisco IOS Release 12.3(21) BC
are available at: