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Home Agent and DHCP Server Assignment

The home agent IP address is assigned with the WiMAX-HA-IP-MIP4 attribute. The DHCP server IP address is assigned with the WiMAX-DHCPv4-Server attribute. This section provides a brief description on how Steel-Belted Radius Carrier can assign these addresses.

Assignment Using Return List Attributes

SBR Carrier can assign the home agent and DHCP server addresses by returning the WiMAX-HA-IP-MIP4 and WiMAX-DHCPv4-Server attributes in the Access-Accept message. This is configured by defining these attributes in the return list of a user or profile entry.

The address assignment process and configuration differs depending on whether the server is acting as the HAAA or VAAA. Steel-Belted Radius Carrier can be configured to perform either role. For details on configuring this method, see Configuring Return List Attributes to Assign the Home Agent and DHCP Server .

Assignment Using Statically Weighted Round-Robin Groups

By using statically weighted round-robin groups, SBR Carrier can load balance the IP address assignment of multiple home agents and DHCP servers in the network. The round-robin feature enables you to configure a home agent round-robin group and assign fixed weights to each home agent in the group. SBR Carrier then assigns the home agent to a session based on a weighted round-robin method. For details on configuring this method, see Configuring Statically Weighted Round-Robin Groups to Assign the Home Agent and DHCP Server .

Assignment Using the Smart Dynamic Home Agent Assignment Feature

The smart dynamic home agent assignment feature uses several configuration files that define both the round-robin groups, and their associated weights. The weight file is dynamically updated. When SBR Carrier receives a SIGHUP (1) signal, it reads these configuration files and updates the round-robin groups. You can assess the load status of the home agents in your network and populate the associated configuration files in a way that balances the load across home agents. For details on configuring this method, see Configuring the Smart Dynamic Home Agent Assignment Feature.

Modified: 2018-01-11