Cisco Headend System Release 2.5 Installation Guide
5-36
SR 2.5 and SR 3.5 Post Upgrade Procedures
78-738190-01 Rev B
Change the DNCS Data Pump Rates,
Continued
General Notes About the Pioneer Data Carousel Rate Settings
Note these general points about the data in the Pioneer Data Carousel Rate Settings
Note these general points about the data in the Pioneer Data Carousel Rate Settings
table:
•
•
The rows highlighted in gray represent inband data carousels. The rows without
the gray highlighting represent out-of-band (OOB) data carousels.
•
Source IDs for non- Cisco data carousels may be different than those listed in the
preceding table.
BFS Performance Recommendations
When setting your inband and out-of-band data carousel rates, consider the
following points as they pertain to the configuration of your Broadcast File Server:
•
•
The presence of third-party applications does not require that you configure one
data carousel per application. You may assign multiple files to the same carousel,
as long as you consider the specific performance requirements of the DBDS
network. The more files you assign to a given data carousel, the longer it will take
for the files to transfer to the DHCT.
•
You can redistribute existing application files among the data carousels as you add
new application files to your system. Consider the specific transfer speed
requirements of the files when deciding whether to redistribute the application
files.
•
Do not use any system default data carousels for third-party application files.
Cisco reserves default carousels for system files only.
Inband Data Carousel Recommendations
Consider these recommendations for managing inband data carousels on the DBDS:
•
•
For third-party applications, use these guidelines when adding inband carousels:
- The data rate should be either 1 or 2 Mbps (megabits per second).
- The block size should be 4000 bytes.
- The indication interval should be 100 ms (milliseconds).
- The data rate should be either 1 or 2 Mbps (megabits per second).
- The block size should be 4000 bytes.
- The indication interval should be 100 ms (milliseconds).
•
Depending upon your QAM modulation mode, the sum of your inband data
carousel rates (including source 199), plus any additional audio-visual content that
is combined on the modulator, should not exceed the following totals:
Direct ASI
BFS BIG
64-QAM modulation
26 Mbps
25 Mbps
256-QAM modulation
37 Mbps
36 Mbps
Note: Once you define an inband data carousel, the BFS automatically sets up the
session. However, you still need to define the source and source definition.