Alteon Application Switch Operating System Application Guide
Global Server Load Balancing
Document ID: RDWR-ALOS-V2900_AG1302
733
Configuring GSLB Network Preference
Alteon enables clients to select GSLB sites based on where the client is located. This is implemented
by configuring network preference. Network preference selects the server based on the preferred
network of the source IP address for a given domain. The preferred network contains a subset of the
servers for the domain.
The example configuration in
Figure 124 - Configuring the Client Proximity Table, page 733
illustrates how to create rules based on client network preference. Two client networks, A and B, are
configured in the network preference rule on the master Alteon at Site 4. Client A with a subnet
address of 205.178.13.0 is configured with a network preference rule for preferred Sites 1 and 3.
Client B, with a subnet address of 204.165.0.0, is configured a network preference rule for preferred
Sites 2 and 4.
Client A, with a source IP address of 205.178.13.10, initiates a request that is sent to the local DNS
server. The local DNS server is configured to forward requests to the DNS server at Site 4. Alteon at
Site 4 looks up its network preference and finds that Client A prefers to connect to Sites 1 or 3.
Similarly, Client B's requests are always forwarded to Sites 2 or 4.
Figure 124: Configuring the Client Proximity Table
Note:
The Alteon lets you configure up to 128 preferred client networks. Each network can contain
up to 1023 real servers.
