Cisco Headend System Release 2.7 User Guide
4025032 Rev C
3
About Enhanced Channel Maps
Important: The order of the rules in the group definition rules file is very important:
the DHCT stops searching as soon as it finds a matching group definition rule.
Therefore, if a DHCT matches more than one rule, it chooses the channel map
associated with the first matching rule in the list. Be sure that you build the group
definition rules file in the appropriate order based on your desired configuration. In
addition, check for typographical errors. For example, if you type "15" for the DHCT
hardware version instead of "1.5," DHCTs will ignore the rule containing this
typographical error. As a result, these DHCTs may download the lug-based channel
map that is associated with the next rule matching the DHCTs attributes.
the DHCT stops searching as soon as it finds a matching group definition rule.
Therefore, if a DHCT matches more than one rule, it chooses the channel map
associated with the first matching rule in the list. Be sure that you build the group
definition rules file in the appropriate order based on your desired configuration. In
addition, check for typographical errors. For example, if you type "15" for the DHCT
hardware version instead of "1.5," DHCTs will ignore the rule containing this
typographical error. As a result, these DHCTs may download the lug-based channel
map that is associated with the next rule matching the DHCTs attributes.
The following section explains how to associate channel map rules and how to
define group definition rules.
define group definition rules.