Cisco Headend Digital Broadband Delivery System Guida Utente

 

4020694 Rev B 

35 

 

The DNCS is typically configured to have EMMs expire within 30 days. The 
camAuditor process is designed to re-encrypt EMMs when the EMMs age to the 
point where they will expire within 19 days, or less. As stated in the Overview 
section of this chapter, the emmDistributor process cycles through the database and 
refreshes DHCTs with their newly encrypted EMMs. It may take several days for the 
emmDistributor process to completely cycle through a large database. 

DHCTs may not receive their newly encrypted EMMs under the following 
circumstances: 

 

The DHCT is rebooting. 

 

The subscriber has powered-off the DHCT. 

 

Network problems prevent the delivery of EMMs to a DHCT. 

Important:  DHCTs that do not receive EMMs will time out and will be unable to 
support encrypted services. 

 

System operators should run the emmlst utility at least once a day to ensure that the 
emmDistributor process is making steady progress through the database. System 
operators should ensure that it is taking the emmDistributor process no longer than 
5 days to cycle through the database.  

Important:  Call Cisco Services if it appears that your emmDistributor process is 
taking longer than 5 days to cycle through the database. Cisco Services engineers 
may instruct you to change the value of the EMM_DIST_THROTTLE parameter in 
the .profile file on the DNCS. 

 

System operators who see the following message when running the emmlst utility 
should call Cisco Services immediately: 
EMM distributor is not logging at this time. 

Important:  This message indicates that the emmDistributor process is not running. 
If the emmDistributor process is not running, the system is not updating DHCTs 
with EMMs. If this problem is not corrected, DHCTs may lose authorization for 
secure services.