If required, alternate source addresses can be specified per Virtual Service.

This field is available in the Advanced Properties section of the Virtual Service modify screen.

Note: This option is only available if the Allow connection scaling over 64K Connections option is enabled in the System Configuration > Miscellaneous Options > L7 Configuration screen.

If no list is specified, the LoadMaster will use the IP address of the Virtual Service as its local address. Specifying a list of Alternate Source Addresses ensures that the LoadMaster will use these addresses instead.

Using an Alternate Source Address will allow more source ports to be used. With one IP address we are limited to 64,000. In order to use more, at least two additional IP addresses must be added in this field. One of the IP addresses can be the Virtual Service address.