Cisco Headend System Release 2.7 User Guide
Managing Bandwidth and Service Groups
4022446 Rev B
15
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.
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 section provides information for properly managing your SDV bandwidth and
service groups.
service groups.
Fine Tuning SDV Bandwidth
This section provides procedures you can follow to monitor and fine tune your
bandwidth.
bandwidth.
Check SDV Server Specifications
Refer to the Series D9500 Switched Digital Video Servers Installation and Operation Guide
(part number 4012584) to verify that your system conforms to maximum
specification limits listed for the following:
(part number 4012584) to verify that your system conforms to maximum
specification limits listed for the following:
QAM modulators
DHCTs
Service Groups
Note: See Expanding the Number of Available Service Groups (on page 13) for
procedures to expand the number of service groups available on your system.
Note: See Expanding the Number of Available Service Groups (on page 13) for
procedures to expand the number of service groups available on your system.
Monitor Alarms
Use your Network Management System (NMS) to monitor your system for the
following session and server capacity alarms:
following session and server capacity alarms:
Alarm 101
Alarm 204
Alarm 205
Alarms 207 through 209
Alarm 400