CUCM Upgrade

 CUCM Upgrade 6.1.4 up to 8.6 - MCS to VMWare

• Enable peer firmware sharing on all phones
• Upgrade IOS on all voice gateways (VG224s included)
• Install Device Pack on current system to get phone loads to a level (8.5.2 I believe) where they will take the code in CUCM 8.5
• Change IP address on one server. Also change in DNS. Shutdown. Move to DC. Bring back up. Ensure everything working. Check DB replication. If this server is the TFTP server, change option 150 on all DHCP scopes
• Reset all phones so they get new configuration file with changed server IP address. Confirm either on a sampling of phones or via web browser to phones
• Change config on all IOS voice gateways to include new server IP address
• Change IP address of CUCM on Unity. Restart Unity sevice. Confirm Unity connectivity to both CUCM servers
• Change IP address on second server. Also change in DNS. Shutdown. Move to DC. Bring back up. Ensure everything working. Check DB replication. If this is the TFTP server, change option 150 on all DHCP scopes
• Reset all phones so they get new configuration file with changed server IP address. Confirm either on a sampling of phones or via web browser to phones
• Change config on all IOS voice gateways to include new server IP address
• Change IP address of CUCM on Unity. Restart Unity sevice. Confirm Unity connectivity to both CUCM servers
• Upgrade to 8.5 on physical boxes. Allow phones to download 9.x firmware
• Upgrade TSP drivers on Unity for new version of TSP on CUCM
• Backup CUCM system
• Shut down publisher
• Install 8.5 in VMWare with exact same settings as the shutdown publisher including hostname, IP address, certificate information, admin password, shared secret, application username/password
• Restore publisher and by extension entire cluster from backup. Restart all servers
• Ensure functionality
• Shut down subscriber server
• Install 8.5 in VMWare with exact same settings as the shutdown subscriber including hostname, IP address, certificate information, admin password, shared secret, application username/password
• Restore subscriber from backup. Restart subscriber
• Upgrade to 8.6 on both. Complete CUCM outage for a couple of hours. Change VMWare guest operating system to RHEL 5.
• Testing