Triple Play Service Delivery Architecture This section provides TPSDA configuration information for the following topics: ARP Hosts Bridged CO DHCP Server Failover States DHCPv4 Server Basics Diameter Application NASREQ Diameter Base Protocol: Establishing a Diameter Peer Connection ESM 128-bit Mode for DHCPv6 IA_NA WAN Hosts ESM Basics ESM IPv4: Multicast in a Wholesale/Retail Scenario ESM IPv4: Multicast with Redirection ESM IPv4: Multicast with SRRP ESM SLAAC Prefix Assignment via Local Address Server ESMv4: PPPoE Hosts ESMv6: IPoE Dual Stack Hosts ESMv6: PPPoE Dual Stack Hosts Flexible Authentication Model in ESM GTP Access High Scale QoS IOM in ESM Context: Expanded SLA Mode High Scale QoS IOM in ESM Context: Single SLA Mode Ingress Multicast Path Management IPoE Sessions IPv4 DHCP Hosts L2TP for Subscriber Access — LAC Local User Database Basics Local User Database for DHCPv4 Server Local User Database for Enhanced Subscriber Management Managed SAPs with Routed CO Multi-Chassis Ring Layer 2 with Enhanced Subscriber Management Python Cache Support for ESM Applications RADIUS-Triggered Dynamic Data Service Provisioning Raw Formatting of DHCPv4/v6 Options in ESM Routed CO Subscriber Redundancy for Routed CO Virtual Residential Gateway Authentication Scenarios Virtual Residential Gateway Home LAN Extension Virtual Residential Gateway Home Pool Management WiFi Aggregation and Offload — Basic Open SSID WiFi Aggregation and Offload — Basic Secure SSID with Distributed RADIUS Proxy WiFi Aggregation and Offload — IPv4/v6 Dual-Stack UEs WiFi Aggregation and Offload — Migrant User Support WiFi Aggregation and Offload — Open SSID with DSM and Lawful Intercept