Since we have already said quite a bit about hubs elsewhere, this page
will mostly be a product review. A hub
is a passive device that acts as a central connecting point by taking in
lines from individual devices, mainly PCs, servers and printers, to form
individual LAN segments. Devices that are connected to the same
hub are in the same LAN segment and they share the hub's
bandwidth. Essentially, a hub repeats incoming signals to all
Now we need to give brief descriptions of some terminology related to hubs that will be useful in answering the following four questions which characterize the main hub properties you need to consider.
The following table lists the major CISCO products. Subsequent tables list product lines from other sources.
|Cisco MicroHub 1538||Eight port 10/100 autosensing device that comes in managed and automanaging units where one managed unit can be used to indirectly manage three other manageable units in a four stack hub.|
|Cisco FastHub Series||Four models ranging from 12 to 24 ports with 10/100 autosensing ports per chassis..|
|10BaseT Hub||Developed with Hewlett-Packard, this is a Fast Ethernet 10/100 fixed configuration managed hub optimized for use with Cisco Catalyst 1900 and 2820 Series switches. It is not stackable.|
|Cisco VPN 3000 Series Concentrator||Carrier class Fast Ethernet 10/100 VPN concentrators. Includes VPN client software including encryption and authentication techniques. Supports up to 10,000 encryption tunnels.|
|Cisco VPN 5000 Series Concentrator||Carrier class Fast Ethernet 10/100 VPN concentrators. Includes VPN client software including encryption and authentication techniques. Supports between 1,500 and 40,000 encryption tunnels.|
|Specialty Hubs||Concentrators used in specialized environments such as FDDI.|
|This information will be updated intermittently. In addition, I will post some offerings from CISCO competitors while trying to focus on those with largest market share. Any assistance in this will be greatly appreciated.|