Verizon Purchases Spirent's Broadband Test Solution to Support DSL Rollout

Verizon will use Spirent's PPP over Ethernet over ATM (PPPoEoA) test application for the AX/4000 Broadband Test System to verify performance, reliability and scalability of the carrier's broadband access routers before they are deployed into a live network. PPPoEoA and PPPoA are common forms of the PPP implemented in broadband networks that leverage ATM as their underlying transport. Over the past year, network equipment manufacturers have been developing access routers that boast improved feature sets, including increased reliability and scalability, to support as many as 200,000 or more subscribers (PPP sessions) per device. Spirent said its AX/4000 test solution supports 32,000 sessions per port, or 256,000 subscribers per chassis, and a session setup rate as high as 400 subscribers per second per port or 3,200 sessions per second per chassis. The Spirent AX/4000's session scalability, along with its support for QoS testing of bi-directional data over the PPP sessions, enables broadband access testing in the lab so that carriers can confirm how many subscribers each device can realistically accommodate prior to actual deployment.
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