Cisco DNCS System Release 2.8.1 3.8.1 4.3.1 User Guide

As part of setting up enhanced channel maps for your facility, you build a set of group definition rules. This page
describes how to create an enhanced channel map and build a set of group definition rules.

Before you begin, make certain that you understand what occurs when you build a set of group definition
rules. When you create these rules, the following events occur.



The DNCS stores these rules in a file and posts the group definition rules file on the BFS for the DHCT

to read.



When the DHCT boots up, it looks for this file on the BFS and reads the file if it exists. During normal

operation, the DHCT also monitors this file for modifications.



If the DHCT finds a rule that matches the DHCT's configuration, then it uses the first rule that matches

to apply the channel map associated with that rule. If the DHCT does not find a rule that matches its
configuration, it uses the channel map for the hub where it resides.

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 DHCT's
attributes.

Follow these instructions to set up an enhanced channel map:

1.

Add a custom channel map to the DNCS and determine its LUG ID. 

Example: You might create a channel map that contains only high-definition (HD) channels. When giving
a name to the channel map, we suggest that you use a name that identifies the lineup group function.
For example, you might name a lug-based channel map that contains only HD channels HD_LUG.

Note: Add a customized channel map the same way you would add a typical hub-based channel map to
the DNCS. See 

 for assistance.

2.

Determine the LUG ID of the custom channel map that you created in step 1: Open the Display Channel

Map window for the channel map you just created and write down the Lug ID (lineup group ID) that the
DNCS assigned to the new channel map.

3.

Repeat steps 1 and 2 to create other custom channel maps.

Note: Several minutes after creating a new channel map, the channel map file can be viewed in the
sam cabinet on the BFS Client window. New channel map files are listed under the lug folder in order by
lug ID. If a channel map is associated with a hub, then the channel map file will also appear in the sam
cabinet by hub ID.

4.

 that a DHCT must meet in order to receive a custom channel map

(Lug ID) that you have created. The DNCS places these rules on the BFS as a file for distribution to