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AMCC rolls out terabit-class switch fabric for metro-carrier apps

Posted: 26 Feb 2002 ?? ?Print Version ?Bookmark and Share

Keywords:applied micro circuits? amcc? networking ic? network ic? data communication ic?

Designed to work seamlessly with the company's 10Gbps nP7510 network processor and nPX5700 traffic manager, the nPX8005 crossbar-based switch fabric is expected to provide the flexibility to scale linearly to terabit-range bandwidth for metro-carrier applications such as core switching.

The switch fabric is comprised of a memory subsystem (S8905), a scheduling device (S8805 or S8505), and a crossbar with integrated arbiter (S8605). It also features an integrated 2.5Gbps serdes high-speed terminations and memory.

Previously known as Cyclone, the nPX8005 architecture is protocol-agnostic, offering cell sizes suitable for cell or packet traffic, allowing the switch fabric to be used across multiple platforms.

"The nPX8005 is expected to be one of the earliest terabit-class fabric products on the market," said Jag Bolaria, senior analyst at The Linley Group. "With this fabric, AMCC is able to provide complete switching solutions for a broad range of throughputs, with advanced quality of service that includes low latency and no-delay jitter," he added.

The nPX8005 also offers "active redundancy" which allows additional switch cards to not only provide redundant protection but also fully-usable bandwidth. The company claims this effectively increases bandwidth utilization by 33 percent.

Manufactured using a 0.13?m CMOS process, the nPX8005 features a power dissipation of 12W per 10Gbps terminated bandwidth provisioned with 1+1 protection. It also features a 50-ohm differential and common-mode terminations for 2.5Gbps serial links, and supports TDM grooming and packet-switching in a single fabric.

The switch fabric also features eight classes of service, enabling greater granularity when handling traffic subject to service level agreements. It also offers robust scheduling algorithms such as weighted round robin for fixed-length cell traffic, deficit round robin for variable length packet traffic, and weighted fair queuing for egress traffic shaping and finer granularity scheduling.





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