Cisco Headend System Release 2.7 Betriebsanweisung
Chapter 1 Maintaining Your SDV System
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4000308 Rev B
Managing Bandwidth and Service Groups
Overview
Because the SDV technology is designed to recover bandwidth from
infrequently-viewed channels, fine-tuning of access network bandwidth is an
important management aspect of your SDV system.
infrequently-viewed channels, fine-tuning of access network bandwidth is an
important management aspect of your SDV system.
Careful management of service groups is another important consideration for your
SDV system. For example, you should split service groups in the event that the
DHCT threshold capacity of the SDV service group is exceeded. Increases in channel
demand also could warrant the need for splitting service groups.
SDV system. For example, you should split service groups in the event that the
DHCT threshold capacity of the SDV service group is exceeded. Increases in channel
demand also could warrant the need for splitting service groups.
This chapter provides information for properly managing your SDV bandwidth and
service groups.
service groups.
Checking SDV Service Groups
Run the SGMparse.pl Utility
The SGMparse.pl utility is used to read the service group map (SGM) file. The SGM
file contains all the frequencies assigned to GQAM and MQAM service groups.
file contains all the frequencies assigned to GQAM and MQAM service groups.
Complete the following steps to run the SGMparse.pl utility.
1 If necessary, open an xterm window on the DNCS.
2 Type cd /dvs/dvsFiles/SGM and then press Enter.
1 If necessary, open an xterm window on the DNCS.
2 Type cd /dvs/dvsFiles/SGM and then press Enter.
Important! Make sure you type a space before typing /dvs.
3 Type ls and then press Enter to list the service group map files.
Example: The following sample output shows the list of SGM files:
core sdb sdv servicegroupmap.dat
core sdb sdv servicegroupmap.dat