Cisco Headend System Release 2.7 Release Notes

 

10 

4022291 Rev C 

With the live upgrade, your site only needs to be down for 2 to 3 hours during the 
entire upgrade process. Most of the upgrade procedures have no system impact. You 
can perform the pre-install and pre-upgrade steps at any time of day. However, the 
actual upgrade process normally takes place during a maintenance window 
beginning at midnight. The following table describes each upgrade process. 

Pre-install 

1-3 hours 

Activities are performed by Cisco Services, including 
checking the overall health of the system. These activities do 
not impact the system. 

Pre-upgrade  3-4 hours 

Backing up the system: 

 

Back up the system components 

 

Back up the DNCS and Application Server files 

 

Complete system checks 

These activities do not impact the system. 

Upgrade 

6-8 hours total; 
2-3 of these 
hours require 
system outage 

Note: Actual 
time may vary 
based on the 
number of 
devices being 
upgraded. 

Upgrade the DBDS network: 

 

Back up the DNCS database 

 

Install the DNCS and Application Server software 

 

Determine which optional features (licensed or 
unlicensed) need to be enabled as a result of this 
upgrade 

 

Install and download the component software (QAM, 
MQAM, GQAM, and QPSK modulator) 

 

Reboot the hardware 

 

Complete functional checks 

QPSK modulator upgrades and some QAM and MQAM 
upgrades can be completed with little or no subscriber 
impact. However, 2-3 hours of the upgrade require system 
outage. 

Post-
Upgrade 

3-4 hours 

Back up the system: 

 

Back up the file system 

 

Back up the DNCS database 

These activities do not impact the system.