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Superhub modules basically fall into two classes: those that provide LAN connectivity to users and specialized ones that offer higher level services such as bridging, switching, routing and gateway links.The newer switch modules, such as those offered by Cabletron, Bay and 3Com, may or may not provide switched backplane connectivity, so be careful.

As vendors struggle to quickly release switching modules into the market, several Horse charm bracelet them have products that only draw power from the chassis, requiring you to use an external patch cord to attach existing shared LAN modules to the backplane. The patch cords -- a Category 5 twisted-pair cable with two RJ-45 connectors, for example -- act as jumper cables to connect a switch port to a LAN port. Not a pretty picture.

Fast LAN technologies such as 100Base-T are also finding their way into the superhub, often combined with switching on the same module. Be sure to check if a vendor supports fast Ethernet over fiber to overcome the distance limits of copper cable while providing 100M bit/sec connectivity at a lower-than-FDDI price point.

While not suitable for backbone applications, 100Base-T may be just the ticket for server connections, particularly if you can keep it down to one node per switch port, eliminating the contention issues inherent in 100Base-T. Our research shows Tiffany Somerset dangle cuff fast LAN technologies accounted for less than 5% of all module shipments in 1995. However, that number is sure to explode this year as vendors roll switching into their 100Base-T offerings. The switching will be done on the 100Base-T module itself either using an Application Specific Integrated Circuit or an Intel Corp. i960 processor. However, connecting this module to the hub backplane will integrate 100Base-T switching into the rest of the network.

While most superhub vendors strive to manufacture a full range of modules for their chassis, some opt to establish OEM relationships. Optical Data Systems uses this strategy to integrate best-of-breed modules from many other vendors into its Infinity line.

Strong contenders in this market segment will have a full Return to Tiffany Heart Lock Cuff of specialized modules. In addition to traditional shared Ethernet, token-ring and FDDI LAN interfaces, you want to make sure the superhub you choose supports the vendor's entire line of technology offerings. Bridge/router, communication server, terminal server, file/application server, protocol translator, SNA connectivity and ATM access modules are all important to consider.Managing the beastOnce you have settled on the backplane and modules you need, turn your attention to management.

The strength of a vendor's network management platform determines how well hub elements can be logically and physically controlled. Superhub management tasks are either dedicated to a particular module, as in Bay's System 5000, or management is Elsa Peretti Open Heart pendant across many modules, as in Cabletron's MMAC-Plus. The issue here is hub real estate and management overhead.Dedicated management modules provide this specialized function without taking away processing resources on other modules, but they consume valuable slot space.

In distributed management, a particular module is picked at start-up either automatically or based on user configuration. The management functions include port and module monitoring, as well as configuration and traffic collection. Some superhubs, including ones from 3Com, have Remote Monitoring embedded in the hub, making more advanced network monitoring and analysis possible.All superhubs provide Simple Network Management Protocol Medium Elsa Peretti Open Heart pendant 1 support, enabling you to control and manage them through your favorite management platform.