4.2 Add a Target Set

Before you can add a Target Set, you must configure at least one IPFE in IPFE, and then Configuration, and then Options.

Use this task to add a target set to the IPFE configuration. Define the list of application server IP addresses for the target set and associate the target set with an IPFE.

Target Sets associated with an IPFE may be completely overlapping, but may not be partially overlapping. A warning appears if overlapping target sets are associated with an IPFE.

• Partially overlapping target set example:
• Target Set 1: Application Server 1, Application Server 2
• Target Set 2: Application Server 2, Application Server 3

• Completely overlapping target set example:
• Target Set 1: Application Server 1, Application Server 2
• Target Set 2: Application Server 1, Application Server 2

1. Select IPFE, and then Configuration, and then Target Sets.

   The fields are describe in Table 4-2.

2. Click either Insert IPv4 or Insert IPv6.
   If no IPFE has been configured, an error message is displayed.
3. Under the Target Set section complete the following entries:
   1. Select the TS Number for the target set.
   2. Select the Protocols this target set supports.
   3. If you want to configure the target set, but not enable its use, select Disable.
   4. Set the Delete Age timer. The timer must be greater than Diameter Watchdog timer.
   5. Select Hash or Least Load in the Load Balance Algorithm field.
4. Under the Least Load Parameters section complete the following entries:
   1. Set the MPS Factor.
   2. Set the Connection Count Factor.
   3. Set the deviation percentage of MPS Factor and Connection Count Factor in the Allowed Deviation field.
   4. If you want to Enable peer node group awareness when directing connections, check the box in the Peer Node Aware Least Load field.
      When enabled, the IPFE distributes connections from the same peer node group across servers in the target set to provide server redundancy for that group of peers. The IPFE keeps a group count of the connections from a peer node group to each server in the target set. Servers with a group count difference that is equal to or greater than D from the lowest group count are generally not considered, such as, if D is 1, the effect is to send the connection to the server with the lowest group count.
   5. Set the D value as describe in step 4d (Peer Node Aware Least Load) in the Peer Node Group Distribution Threshold field.
5. Under the Public IP Address section complete the following entries:
   1. Provide an IP Address to represent this target set to the outside world.
      The IP address format is either IPv4 or IPv6 depending on which button you selected in step 2. This IP address must reside on the XSI network.
   2. Select the Active IPFE that primarily handles traffic for this TSA.
      If an IPFE is unavailable for selection, that IPFE has not been configured.
      If the Active IPFE fails, then its mate takes over.

      If configured, the partner of the active IPFE is the standby IPFE

6. Under the Alternate Public IP Address section complete the following entries:
   1. Provide an optional Alternate Address that is a public IPv4 IP address to represent this target set to the outside world.
      For SCTP this address serves as an non-primary protocol-linked failover address.
      For TCP, this address can serve as an independent address.
      If this field is populated, then the column alternate IP address under target set IP list must be populated. Do not edit if in use by a local node.
   2. Select the Active IPFE for alternate address that handles traffic for this TSA's alternate address.
      If the Active IPFE fails, then its mate takes over.
7. Under the Target Set IP List section complete the following entries:
   1. Select an IP address in the IP Address field.
      This IP address must reside on the XSI network.
   2. Optionally, select an alternate IP address in the Alternate Address field.
   3. Enter a textual description for the application server in the Description field.
   4. Provide a weighting value in the Weighting field.
      The weighting value is used to control the traffic distribution among the application servers.
   5. Click Add to add another IP address to the list.
      You may add up to 16 IP addresses per target set.
8. Click OK, Apply, or Cancel.

After application servers have been added to a target set, the IPFE distributes traffic across them.