11
Figure 4
. Distributed network example
It is highly recommended to use VPN technology for computer network
connecting central office with sites for additional security.
It is highly recommended to use routers with two different technology Internet
access channels fir redundancy.
Algorithm of working in LAN
1.
If DHCP - obtaining IP address with the start of the access control panel
2.
Update of IP status of address (announcement and extension of reserved
IP, if DHCP)
3.
Determine accessibility of ACS server (IP or DNS name)
4.
Periodic sending of test signals
5.
If there is, sending of events. Waiting for server commands.
Algorithm of operation on the Internet (local wire net)
1.
If DHCP - obtaining of IP address within local network affiliate at panel
launch
2.
Update of status of IP addresses (announcement and extension of
reserved IP, if DHCP)
3.
Determine possibility of access to the Internet (accessibility of given IP
address of router)
