INDUSTRY COMPONENT

Shared Memory Buffer

A high-speed memory buffer in switch fabric systems that temporarily stores and manages data packets during routing operations.

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Component Specifications

Definition
A shared memory buffer is a critical component in switch fabric architectures that provides temporary storage for data packets as they traverse the switching matrix. It enables efficient packet queuing, congestion management, and quality of service (QoS) implementation by allowing multiple input/output ports to access a common memory pool. This component minimizes packet loss during traffic bursts and ensures deterministic latency in high-performance networking equipment.
Working Principle
The shared memory buffer operates by allocating memory blocks to incoming data packets from multiple input ports. A centralized memory controller manages read/write operations, allowing packets to be stored temporarily before being forwarded to their destination output ports. This architecture enables statistical multiplexing, where memory resources are dynamically allocated based on traffic patterns, preventing head-of-line blocking and improving overall switch throughput.
Materials
Semiconductor materials (silicon), copper interconnects, PCB substrate (FR-4), thermal interface materials
Technical Parameters
  • Bandwidth 100-400 Gbps
  • Port Count 8-64 ports
  • Access Speed <10ns
  • Memory Capacity 64MB-2GB
  • Power Consumption 5-25W
  • Operating Temperature 0°C to 70°C
Standards
ISO/IEC 11801, IEEE 802.3, ANSI/TIA-942

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Shared Memory Buffer.

shared memory buffer switch fabric buffer network switching memory packet buffer QoS memory networking hardware data center switching Shared Memory Buffer in Computer, Electronic and Optical Product Manufacturing

Parent Products

This component is used in the following industrial products

Switch Fabric

The internal high-speed data switching and routing subsystem within a network switch.

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Engineering Analysis

Risks & Mitigation
  • Memory contention during peak traffic
  • Buffer overflow causing packet loss
  • Thermal management issues
  • Single point of failure risk
FMEA Triads
Trigger: Memory controller failure
Failure: Complete buffer malfunction
Mitigation: Implement redundant controllers and error-correcting code (ECC) memory
Trigger: Thermal overload
Failure: Memory corruption and system shutdown
Mitigation: Implement active cooling and temperature monitoring with throttling mechanisms

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
±5% for timing parameters, ±2% for voltage levels
Test Method
RFC 2544 for throughput testing, RFC 2889 for congestion testing, thermal cycling per MIL-STD-810

Buyer Feedback

★★★★☆ 4.6 / 5.0 (15 reviews)

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"The technical documentation for this Shared Memory Buffer is very thorough, especially regarding technical reliability."

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Frequently Asked Questions

What is the primary function of a shared memory buffer in switch fabric?

The primary function is to temporarily store data packets during switching operations, preventing packet loss during congestion and enabling quality of service management.

How does shared memory differ from dedicated port buffers?

Shared memory allows dynamic allocation across all ports, improving memory utilization, while dedicated buffers allocate fixed memory per port, which can lead to inefficient resource use during unbalanced traffic.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

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