Chapter 1: Introduction

1.5.3Inverse Multiplexing (IMUX)

Cabletron Systems Inverse Multiplexing (IMUX) feature provides enhanced throughput for users by following this process:

The IMUX function evenly distributes a data packet stream from the LAN interface through multiple full T1 WAN interfaces on the HSIM-W85.

Data packet streams received by the WAN interfaces on the other end of the WAN links are then recombined, ordered, and transmitted to the LAN interface.

The IMUX function is configured using the Network Tools command, imux, described in Chapter 4.

NOTE

Cabletron Systems products that support Inverse Multiplexing (IMUX), such as the HSIM-W6, CSX400, HSIM-W84, HSIM-W85, and HSIM-W87, must exist on both ends of the WAN link for the IMUX function to work. All bridging and switching functions, such as 802.1D, SecureFast VLAN, and 802.1Q are able to run as normal on the host platform when using the IMUX function on the HSIM-W85.

1.5.4Priority Queuing

WAN IP Priority Queuing is used to prioritize IP packets from a specified IP address. This prioritizing ensures that certain packets get through the network, such as management packets which are necessary to the operation of the network. It also ensures that routers that depend on protocols with tight timing, such as RIP, do not time out. The prioritized packets do not eliminate other traffic on the network, but are held in a special queue, so that they are not discarded during oversubscribed traffic peaks. Priority Queuing can be enabled in management, using Network Tools. Refer to the wanpq command in the Management chapter.

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HSIM-W85 User’s Guide

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Cabletron Systems W85 manual Inverse Multiplexing Imux, Priority Queuing

W85 specifications

Cabletron Systems W85 is a prominent networking solution that was developed to support the burgeoning demand for high-performance data communications in the enterprise environment. As an advanced multi-layer switch, the W85 effectively integrates various networking technologies, offering robust support for both wired and wireless connectivity, making it particularly suitable for complex network infrastructures.

One of the standout features of the W85 is its scalability. Designed to grow with the needs of a business, the W85 can accommodate an increasing number of users and devices without sacrificing performance. This is essential in today's digital workspace, where employees and equipment are continually being added to the network.

The W85 operates across multiple layers of the OSI model, offering Layer 2 and Layer 3 switching capabilities. Layer 2 functionalities enable efficient Ethernet switching and VLAN support, ensuring that data can move swiftly within local networks. Meanwhile, its Layer 3 capabilities facilitate dynamic routing, allowing for intelligent data distribution across different network segments. This dual functionality enhances the W85's versatility, making it suitable for both small and large-scale deployments.

Equipped with advanced security features, the Cabletron W85 places a strong emphasis on network integrity. It supports comprehensive security protocols that help to mitigate potential threats. Features such as Access Control Lists (ACLs) allow administrators to define and enforce security policies, ensuring that only authorized users have access to sensitive data. Furthermore, the device supports advanced encryption methods to protect data in transit, which is crucial for safeguarding information in modern enterprises.

The W85 is also notable for its management capabilities. It provides an intuitive web-based interface for system administrators, simplifying the configuration and monitoring processes. With support for SNMP (Simple Network Management Protocol), administrators can efficiently manage network devices and receive alerts for potential issues before they escalate into significant problems.

In terms of connectivity, the Cabletron W85 features multiple Gigabit Ethernet ports designed to handle high-speed data transfer. This allows for seamless integration with existing infrastructure while ensuring that performance remains high even under heavy loads. The device is also compatible with various network management protocols, positioning it as a streamlined component in any enterprise’s networking strategy.

The Cabletron Systems W85 embodies the future of enterprise networking with its combination of scalability, security features, and robust management tools, ensuring it remains a relevant choice for organizations looking to enhance their networking capabilities.