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Cabletron made the biggest break with tradition when it began shipping its 2.5G bit/sec TDM-based backplane that supports packet and cell technologies in August 1994. If you need segment routing and want it included in your hub, then look closely at the MMAC-Plus. Cabletron's ATM-based cell switching backplane will ship this year.

3Com Corp.'s ONcore Multifunction System, acquired from Chipcom Corp., has 17 slots and can support up to 33 LANs -- eight Ethernets, 17 token rings and eight FDDI. Its backplane has redundant controllers, and you can configure redundant management for all Elsa Peretti Eternal Circle pendant from one slot. The hub provides backward-compatibility with modules from older generation Chipcom products.Furthermore, 3Com will integrate Ethernet and token-ring switching in this hub. And with a long-standing alliance with IBM, the product is particularly strong in token-ring support.There are several telltale signs that you are the type of Elsa Peretti Eternal Circle pendant who should be examining superhubs.

For instance, superhubs are for you if you are looking to gain control over a large network by managing connections logically and integrating a wide variety of repeating, bridging, switching, routing and gateway technologies in a single platform. Port switching and virtual LAN support, plus high-speed backplanes that interconnect a variety of functional modules, certainly will stir an interest in superhubs.

You also will want a superhub if you desire high port Elsa Peretti Infinity Cross pendant to achieve economies of scale. Seeing as most superhubs have chassis with different numbers of open slots, you can obtain the port density that closely matches your needs.

Then there is the issue of hearty fault tolerance and redundancy features. Look at superhubs if you need redundant power supplies to prevent an outage of the main source of electricity from remaining to be the hub's most common point of failure, hot-swappable modules for nonstop networking and card sparing to ensure all the networking eggs you placed in one basket will not crack. Redundant power supplies and spare cards that can pick up operations when the primary ones fail, combined with the ability to swap out new modules for old ones without taking the hub down, are essential in a data center-caliber device such as a superhub.Atlas pendant can bet that you will be managing a mix of shared and switched LANs as you migrate to newer technologies such as LAN switching, ATM and 100Base-T. A superhub that can manage a range of switching -- everything from segment or port switching to packet or cell switching -- will provide the most flexibility in creating VLANs throughout the enterprise.

A superhub may be in your future if you want to mix variety of legacy Elsa Peretti Starfish pendant types such as Ethernet, token ring and EDI with newer LAN standards such as ATM, 100Base-T, and Ethernet and token ring overfiber. A growing number of superb vendors are supporting that whole range of LAN interfaces plus modules for bridging, switching, routing and application-layer file, print and gateway services. Keep track of your superhub real estate carefully, though, because many of these modules often take up two or more slots.LAN switching provider Madge Networks, Inc. last week extended its reach into the wide area with the $165 million acquisition of multiplexer vendor Teleos Communications, Inc.

The deal gives Madge WAN access switching products and ISDN technology, which the firm will add to its Ethernet, token-ring and Asynchronous Transfer Mode switching product portfolio. The buyout will provide customers with integrated switching technology across the LAN and WAN to support a mix of voice, data and multimedia applications, analysts said.