User guide

Canopy System User Guide Bandwidth and Authentication Manager
(BAM) Services and Features
pmp-0229 (Mar 2013)
441
Bandwidth Manager Capability
Prizm or BAM allows you to set bandwidth per SM for sustained rates and burst rates. With this
capability, the system allows both
• burst rates beyond those of many other broadband access solutions.
• control of average bandwidth allocation to prevent excessive bandwidth usage by a
subscriber.
All packet throttling occurs in the SMs and APs based on Quality of Service (QoS) data that the
Prizm or BAM server provides. No server processing power or network messages are needed for
packet throttling.
QoS management also supports marketing of broadband connections at various data rates, for
operator-defined groups of subscribers, and at various price points. This allows you to meet
customer needs at a price that the customer deems reasonable and affordable.
When Authentication Server is selected in the Security tab of the AP Configuration web page
and one or more Authentication Server is specified by IP address, bandwidth management is
expanded to apply uniquely specified sustained data rate and burst allocation values to each SM
registered in the AP. So, you can define differently priced tiers of subscriber service.
Designing Tiered Subscriber Service Levels
Examples of levels of service that vary by bandwidth capability are provided in Table 64 and
Table 65.
NOTE:
The speeds that these tables correlate to service levels are comparative
examples. Actual download times may be greater due to use of the bandwidth by
other SMs, congestion on the local network, congestion on the Internet, capacity
of the serving computer, or other network limitations.
Table 64: Example times to download for typical tiers of service with CAP 120
Equipment
AP CAP 120
SM CSM 120
Operation 1X
Max burst speed 4.4 Mbps
Example
Settings
Service Type
Premium Regular Basic
Sustained Downlink
Data Rate
5250 Kbps 1000 Kbps 256 Kbps
Sustained Uplink
Data Rate
1750 Kbps 500 Kbps 128 Kbps