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These results conclusively point to the need to support any type of home gateway within a service delivery framework. Service providers must provide the full spectrum of subscriber and host/appliance management capabilities (quality of service [QoS]/security, authentication, authorization and accounting [AAA], troubleshooting, billing, etc.).
For example, all plug-and-play VoIP phones within a household must be authenticated automatically, and inherit the host-specific QoS, security and other applicable policies that will allow service providers to, for instance, mark or remark all voice traffic homogeneously within the same household. At the same time, service providers must make sure that the billable entity or subscriber receives the appropriate billing information for all VoIP calls from all VoIP appliances within the same household.
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"The vast majority of cable deployments and managed communication services from telcos leverage DHCP almost exclusively" |
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One key concern for service providers is to facilitate and accelerate the migration from a legacy PPP/RADIUS-based HSI installed base to a unified, DHCP-based mode of operation for all services. Such a unified mode of operation should be optimized and streamlined, capable of scaling to the massive demands of triple play and IPTV service rollout. It is therefore critical that the underlying service delivery architecture provide the element, service and subscriber mechanisms that can natively support and integrate the legacy AAA functions, while also
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Authentication Methods and Protocol Choices
The predominant mode of operation for broadcast TV and video on demand (VoD) service implementation is dynamic host configuration protocol (DHCP) for the vast majority of all deployments across regions. Although a majority of legacy consumer HSI deployments are based on point-to-point protocol (PPP)/RADIUS technologies for telco companies, 80 to 95 percent of all providers worldwide have made the strategic and technological decision to leverage DHCP as the predominant mode of operation for their triple play infrastructure. DHCP provides proven, robust and more efficient authentication mechanisms that enable better throughput and transport efficiency, multi-appliance plug-and-play connectivity, maximize flexibility for policy enforcement, content insertion and subscriber management, and facilitate and accelerate the migration from legacy infrastructures through native support for HSI, voice, video and managed enterprise services.
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progressively migrating HSI subscribers and integrating them within a unified DHCP-based mode of operation for triple play services.
Optimized service delivery architectures must provide a comprehensive set of legacy AAA support functions, including AAA/RADIUS proxy and PPP offload capabilities, together with the most comprehensive and complete set of subscriber management, AAA and DHCP capabilities to support native retail and wholesale HSI service (in addition to voice and video). Today’s industry leading Ethernet service switches and service router platforms were purpose-built to provide the full set of scalability, service richness, high-availability and subscriber management capabilities required for truly integrated triple play service operations. Additionally, leading triple play vendors have also innovated and pioneered unique capabilities, such as Programmable Subscriber Configuration Policy (PSCP), which facilitate and accelerate the seamless migration to a unified DHCP-based mode of operation, while leveraging existing, legacy HSI AAA/Radius profiles.
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