DNS Configuration and Management Manual (G06.27+, H06.05+, J06.03+)

Scaling DNS
HP DNS Configuration and Management Manual—529432-003
4-2
DNS Round-Robin Address Rotation
This arrangement is a physical scaling mechanism appropriate for private networks.
DNS Round-Robin Address Rotation
Another method of scaling at the network level is to use DNS round-robin address
rotation. For DNS address rotation, a different network interface is associated with
each IP address, and one name server answers requests for the name using the
Figure 4-1. Physical Separation of Network Traffic
Note. Figure 4-1 shows the processors as separate servers to illustrate a general concept. In
the NonStop server environment, all four processors could be in one server.
vst028.vsd
DNS server
(named) 1
Subnet 192.168.1.1
Subnet 192.168.2.1
DNS server 1 returns IP
address of Weserver 1
Webserver 1
Webserver 2 Webserver 3
DNS server
(named) 2
DNS server
(named) 3
Webserver 4
DNS server
(named) 4
DNS server 2 returns IP
address of Weserver 2
Subnet 192.168.3.1
DNS server 3 returns IP
address of Weserver 3
Subnet 192.168.4.1
DNS server 4 returns IP
address of Weserver 4
Four servers for MyCompany