Cisco Headend System Release 2.7 User Guide

 

4031374 Rev B 

201 

 

The most common use of the runCVT utility is to add DHCTs to a download group. 
When DHCTs belong to a specific download group, they can download software 
that is intended only for DHCTs that belong to that group. System operators can add 
DHCTs to a specified download group through use of the -a option of the runCVT 
utility. 

When run with the -a option, the runCVT utility will first seek to confirm the 
operator's intent to add DHCTs to a download group. The operator is then 
prompted to specify the Group ID of the download group that is to have DHCTs 
added to it, as well as the name of the file that contains the DHCT MAC addresses.  

The utility then prompts the operator to indicate whether existing DHCTs in the 
download group should be deleted before new DHCTs are added to the group. Any 
DHCTs that are deleted are placed on a fast refresh list to download default DHCT 
code. 

Note:  The fast refresh list describes a list of recently modified DHCTs that are 
notified by the DNCS to download new code. DHCTs typically remain on the fast 
refresh list for about an hour. 

Important:  Be certain the following conditions are true before you try to add 
DHCTs to a download group by way of the runCVT utility: 

 

You know the ID of the existing download group to which you want to add 
DHCTs. 
Note:  See Display the Help Window for the runCVT Utility (on page 197) for 
information on how to generate a list of existing download groups. 

 

You have created a text file that contains the MAC addresses of DHCTs that are 
to be added to the download group. 
Note:  See Prepare the Text File (on page 199) for guidelines and instructions on 
preparing the file of MAC addresses.