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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

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

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

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.