Resilient Packet Ring (RPR) Networking

Alliance Semiconductor is developing a family of networking controllers to address the needs of established and emerging protocols and standards including Gigabit Ethernet & 10-Gbps Ethernet, Resilient Packet Ring (IEEE 802.17), Generic Framing Protocol (GFP), Virtual Concatenation (VCat) and others. These networking controllers serve a variety of applications and vertical markets including networking, cable infrastructure, storage, compute and others.

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Resilient Packet Ring Controllers

The AS95L2100 family of Resilient Packet Ring Controllers from Alliance Semiconductor is specially designed to support the emerging IEEE 802.17 Resilient Packet Ring (RPR) standard at various line interface speeds including OC-12, OC-48 and OC-192 for SONET, and 2.5G & 10G for Ethernet and PacketPHY.

The AS95L2100 family is based on a unique patented Adaptive Compute Architecture that combines wire-speed processing power with adaptive logic. This technology provides an unparalleled control over hardware and software that enable the same device to be adapted - without performance penalty - to various ring protocols such as the emerging IEEE 802.17 draft 3.x, Cisco's SRP™ and other proprietary protocols.

The RPR Controller family uniquely supports multiple physical interfaces, modes, protocols and standards. The AS95L2100 family incorporates the resilient ring Media Access Control (MAC) along with layer 1 and layer 2 functions that include: SONET framers, Ethernet MACs, POS/HDLC, GFP and WIS frame delineators. The family also integrates on-chip address matching Content Addressable Memory (CAMs), and large buffer memory for insert and high priority transit queues.

The AS95L2100 family includes on-chip configuration, performance and fault-management features that support RPR requirements for Operation, Administration, Maintenance and Provisioning (OAM&P). The AS95L2100 family includes three devices based on the same architecture that incorporate the same set of features. They are software compatible and differ in the bandwidth and line rate they support. The AS95L2100 has a 20Gbps bandwidth and supports OC192, OC48 and 10GE line interfaces. The AS95L2102 has 10Gbps max bandwidth and supports OC48 and OC12 line interfaces. The AS95L2101 has 5Gbps max bandwidth and supports OC48, OC12 and 2.5GE line interfaces.

The AS95L2100 family is ideally suited for a variety of vertical markets including networking, communications, computing, cable infrastructure, servers and storage cluster systems.