Broadcom Pumps its StrataXGS Switch for 10G Mobile Backhaul

Broadcom introduced its latest StrataXGS Ethernet switching chip optimized for high-capacity mobile backhaul platforms. The StrataXGS BCM56440 switch, which is implemented in 40nm CMOS, integrates the functionality of up to seven off-the-shelf application-specific standard parts (ASSPs), eliminating the need for power-hungry network processing units (NPUs) and field programmable gate arrays (FPGAs).

Key areas of integration include switching, traffic management, timing (both IEEE 1588v2 and IEEE 802.1as packet-based clock synchronization), circuit emulation services, and memory.

The switching capability includes an embedded deep buffer an hierarchical Quality of Service (QoS). It handles L2 switching, L3 routing, metro VPN tunneling and access control lists. Connectivity protocols include VPLS, VPWS, MPLS-TP, PBB and PBB-TE tunneling. In addition, the switch supports Ethernet and MPLS OAM in hardware to enable a complete host CPU offload.

The timing capabilities include 1588v2 support for boundary clock, ordinary clock and transparent clock. It also supports synchronous Ethernet clock synchronization on all ports.
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