Introduction

Each front-panel port (regardless of media type or bandwidth capability) can be configured to operate in Full Duplex Switched Ethernet (FDSE) mode. FDSE allows for each 10BaseT port to provide dedicated 20-Mbps bandwidth for connections to file servers or high-end workstations, while 100BaseTX or 100BaseFX ports can be used to deploy fault-tolerant 200-Mbps backbone links. All 100BaseTX ports also support auto-negotiation.

The 9H42x-xx modules support two types of packet switching:

•Traditional switching, which is 802.1d bridging based on physical layer address information; it enhances the overall reliability of the network and, with DEC Spanning Tree support, protects against loop conditions.

•SecureFast™ switching, which is high-performance switching based on source and destination MAC (physical) layer addresses. Packets received from a source address on a module’s protocol-dependent front panel network are converted into fixed-length, protocol-independent packets for transmission across a backplane, and then are re-converted at the destination device into the appropriate physical frame format for reception by the destination address. Future firmware and management software enhancements will allow an administratively defined connection-policy between end stations connected to SecureFast Packet Switching devices.

NOTE

Firmware support for the SecureFast Virtual Networking (SFVN) feature of the 9H42x-xx family (which allows switching configuration on a per-user level) is in the early stages of release as this document is published; SFVN remote management will be included in a future release of SPECTRUM Element Manager.

Each module also provides a single backplane interface to the INB bus, for common transmission of data with all other modules of any media connected to the INB in the chassis. The INB is the Cabletron-proprietary network bus for protocol-independent, high-speed packet or cell switching between connectivity modules that support front-panel Ethernet, FDDI, Token Ring, or ATM networks. The connectivity modules incorporate Cabletron’s SecureFast Switch (SFS) technology to provide high-performance packet switching based on source and destination MAC addresses, rather than on internet protocol (IP) addresses. By basing packet switching on physical layer information, the INB allows your network infrastructure to be protocol independent. The INB backplane consists of two channels (INB-1 and INB-2), each featuring a 64-byte wide data path capable of a sustained data transfer rate of 2 Gigabits/second (4 Gigabits/second for the combined channels); all 9H42x-xx modules connect to INB-2. The INB backplane requires no management, as its data transmission is subject to hardware defaults.

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Cabletron Systems 9H42X-XX manual Introduction
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9H42X-XX specifications

Cabletron Systems 9H42X-XX is an advanced networking device recognized for its robust performance and reliability in various enterprise environments. Designed to meet the growing demands of data communication, this model serves as a vital component of network infrastructure, offering a myriad of features and technologies.

One of the standout characteristics of the 9H42X-XX is its high-speed data processing capabilities. Equipped with multiple Gigabit Ethernet ports, it ensures rapid data transfer rates, making it ideal for bandwidth-intensive applications. This model supports both IPv4 and IPv6 addressing, ensuring compatibility with modern networking standards and future-proofing the investment for organizations transitioning to newer technologies.

The 9H42X-XX excels in flexibility and scalability, accommodating a range of networking topologies. Its modular design allows for the addition of different interface cards, catering to specific networking requirements such as VoIP, video streaming, and cloud services. This adaptiveness is crucial for organizations that must optimize their network as needs evolve over time.

Security is a primary consideration in the design of the 9H42X-XX. With built-in firewall capabilities and support for advanced encryption protocols, data integrity and confidentiality are ensured. Furthermore, the device offers robust access control features, allowing organizations to define user permissions and protect sensitive information from unauthorized access.

Another important feature is the comprehensive management options available with the 9H42X-XX. It provides a user-friendly interface for network administrators to monitor traffic, configure settings, and troubleshoot issues. This ease of management contributes to reduced downtimes and better overall network efficiency.

Additionally, the Cabletron Systems 9H42X-XX is known for its durability and performance consistency in varying environmental conditions. This resilience makes it suitable for both indoor and outdoor deployments, further extending its usability across different types of organizations.

In summary, the Cabletron Systems 9H42X-XX is a versatile networking solution that combines high-speed connectivity, security features, and ease of management within its robust architecture. Its adaptability and technical specifications position it as a reliable choice for enterprises looking to upgrade their network infrastructure and accommodate future growth.
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