Configuring the WSM using Device Manager

About IP address ranges for SLB

You can define a range of IP addresses for your SLB real and virtual servers. The default real and virtual server mask is 255.255.255.255, so that each real and virtual server represents a single IP address. A mask setting of 255.255.255.0 defines a range so that each real and virtual server represents 256 IP addresses. Consider the following example:

• A virtual server is configured with an IP address of 172.16.10.1.
• Real servers 172.16.20.1 and 172.16.30.1 are assigned to service the virtual server.
• The IP address range is set to 255.255.255.0.

When a client request is sent to virtual server IP address 172.16.10.45, the unmasked portion of the address (0.0.0.45) gets mapped directly to the real server IP address selected by the SLB algorithm. Thus, the request would be sent to either 172.16.20.45 or 172.16.30.45.

See also:

• Configuring IP address ranges for SLB
• Configuring each real server
• Defining an IP interface on the WSM
• Configuring a real server group
• Configuring a virtual server
• Configuring ports for server load balancing
• Enabling or disabling server load balancing
• Configuring virtual server load balancing
• Server load balance statistics
• How virtual server load balancing works