The NSE3128GLM is a network search engine (NSE) device ideally suited for enabling policy enforcement and packet classification in edge, campus and enterprise networking applications. The device database may be organized as 64K x 64, 32K x 128 or 16K x 256. The NSE3128GLM performs high-speed parallel search operations on logical tables. Other applications for the device are as an address filter or an address translator for Ethernet and ATM switches and Layer 3 and higher routing applications.

The NSE3128GLM has a mask word associated with every network search engine word. The user is able to mask entries on a bit-by-bit basis (granularity of 1 bit).
Exact match search operations, such as Layer 2 (MAC) address and MPLS label searches are supported by the NSE3128GLM.

The NSE3128GLM can perform aging on up to 64K entries in the database. When instructed, the NSE3128GLM can automatically set the aging bit when a match is found, if a match is not found the NSE3128GLM returns a ‘no match’ flag which can then be used to initiate the learn procedure.

The NSE3128GLM can support traffic shaping by performing regulation of the average and burst data rates of data transmission. The traffic policing within the device is based on the token bucket algorithm. For each token bucket (up to 512 are supported), a mix of metering rates may be applied by the application.

Features

• Glue-less interface to AMCC processors (nP3400, nP3404, nP7250 and nP7510)
• Multiple database widths supported within the same device: 64, 128 and 256 bits (soft-configurable to 32-bits)
• Network processor Interface supports separate input and output buses for maximum throughput
• Local mask bit associated with each network search engine bit
• Single centralized search engine and database shared across up to four network processors
• Interface for a general purpose host CPU
• Interface for associated data SRAM
• Host CPU drivers along with Table Management Algorithm
• Traffic policing for regulating data transmission and applying metering rates
• Aging for up to 64K entries
• Optional: Cascading - Please contact the factory for further details
• Clock rates: Network Processor Unit (NPU) : 104 MHz; Host : 52 MHz; SRAM : 100 MHz
• Sustained search rate of 83/66/50 million/second
• Eight (8) Configuration Registers
• Supply voltage: Core 1: 1.8V, I/Os: 3.3V LVTTL
• Package: 388 PBGA