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Broadcom expands switch SoC family for data centres

Posted: 20 Mar 2015 ?? ?Print Version ?Bookmark and Share

Keywords:Optical switch? carrier Ethernet? router? data centre?

Broadcom developed a new generation of its StrataDNX ("Dune") family of switch system-on-chip (SoC) devices. The new switch SoCs may be utilised by optical transport, carrier Ethernet, edge and core routers, data centre cloud, and enterprise campus users. The StrataDNX products are now being adopted by top tier equipment makers, providing them a reliable solution for demanding switching and routing platforms as well as large-scale multi-chassis routers.

The StrataDNX switch SoCs provide 800Gbit/s packet processing per device at a high interface bandwidth while integrating a scalable multi-terabit switch fabric, hierarchical traffic manager, external packet buffer memory and advanced packet processing. This unique combination enables equipment makers to deliver network equipment with a higher port density, lower power consumption and greater subscriber scale in a smaller physical system size.

The StrataDNX family of expandable products is complementary to Broadcom's highly integrated StrataXGS Trident and Tomahawk SoCs. Together they provide the industry's most comprehensive end-to-end portfolio of switching solutions across the carrier, data centre and enterprise markets.

The StrataDNX family supports pre-standard implementation for 25G and 50G Ethernet, enabling direct connectivity to the Broadcom BCM56960 Tomahawk switch SoC, the industry's first high- density 25G/100G Ethernet switch for cloud-scale networks. In addition, the devices support port speeds of up to 400Gbit/s. Integrated accelerators for carrier service management provide visibility and control for carrier networks and distributed data centres traversing a wide area network (WAN).

The 28nm StrataDNX switch family offers the following device options:

  • BCM88370 C A single-chip switch delivering 800Gbit/s Ethernet for compact carrier Ethernet and data centre top-of-rack switches
  • BCM88670 C A 720Gbit/s packet processor and traffic manager with DNX fabric interfaces for carrier Ethernet switch router, data centre chassis and enterprise campus applications
  • BCM88770 C A high density switch fabric device providing 3.6Tbit/s throughput per device enabling over 100Tbit/s switching capacity in a single stage system when combined with BCM88670

Broadcom's StrataDNX line delivers a complete set of advanced features for the most demanding carrier, campus and cloud environments. The devices support external DRAM-based packet memory offering up to 300 times more traffic buffering compared with on-chip memory, enabling zero-packet-loss in heavily congested networks. In-field reconfigurable flexible packet processing engines allow for customer-specific forwarding paradigms or future support of new and emerging protocols.

On-chip hierarchical traffic management ensures per-subscriber bandwidth guarantees, required by carrier networks to deliver on service level agreements (SLAs). For optical transport applications, the architecture enables converged carrier Ethernet and optical transport network (OTN) traffic over a unified fabric, enabling significant savings in carrier CapEx and OpEx.

The BCM88370, BCM88670 and the BCM88770 combine the market-leading feature-set of StrataDNX with high bandwidth capacity, enabling a new generation of innovative network switch systems. These include converged Ethernet/optical transport platforms, deep buffered elements for the data centre cloud, and advanced network functions virtualisation (NFV) infrastructure solutions combining the attributes of carrier and data centre network equipment.

Broadcom's StrataDNX BCM88370, BCM88670 and BCM88770 devices are currently sampling.

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