Technical data
ServerIron ADX Graphical User Interface Guide 51
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Virtual servers
7
• Admin State: Click the Enable check box to disable the virtual server. By default, admin
state is enabled.
• Load Balancing Predictor: Select a load balancing algorithm from the list to determine the
load distribution among real servers; for example, Weighted Round Robin.
• OID Entry ID: Enter the SNMP object ID value that represents the weight of the real server.
• Max Value: Enter the maximum value for the dynamic weighting. The range is from 0
through 4,294,967,295.
• Under Symmetric, provide the following information:
Priority: Enter the value to set the priority level for the virtual server. The device with
higher priority will be the active device while the standby device will have lower priority.
The range is from 1 through 255.
Dynamic Priority: Enter the value to automatically adjust the priority of the virtual
server application to a lower value, if the application fails a health check. The range is
from 1 through 255.
Symmetric Active: Select the Enable check box to configure a device pair as an true
active-active pair in Server Load Balancing (SLB).
5. Click Advanced to configure the advanced parameters on the virtual server.
The Advanced tab is displayed, as shown in Figure 35.
FIGURE 35 Configuring advanced parameters
6. Provide the following information:
• Tracking: Click one of the following options.
Track Group—Allows the client to use the same server for applications associated with
the grouped ports, as long as all the ports in the group are active.
Track Port—Allows the client to use the same server for applications associated with
the grouped ports, as long as the primary port is active.
None—Allows to disable the tracking option on the real server.
• Master Port: Select a master port from the list.
• TCP Age: Specify the number of minutes the device allows a TCP connection to remain
inactive before closing the connection. The range is from 2 through 60 minutes. The
default value is 30 minutes.