HP t 5226 24-Port Ethernet manual Compaq Netelligent Repeater and Switch Products cont’d

COMPAQ NETELLIGENT REPEATER AND SWITCH PRODUCTS (cont’d.)

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to add such features as you need them. Competitors that use custom hardware-based ASICs, which define and optimize a switch only for a particular switching scheme, lock you into current technology with little or no migration path.

Hot-swappable, load-sharing, redundant power supplies make Netelligent switches the most reliable in the industry. All Netelligent switches come with one power supply and are equipped for an optional redundant power supply. While some competitors offer redundant power capability, you must purchase a separate unit which is not hot-swappable and can cost as much as 80% more than the Compaq solution.

N E T E L L I G E N T 100 M B / S E T H E R N E T R E PE A T E R P R O D U C T S A N D P O S I T I O N I N G

Fast Ethernet is an 802.3u IEEE specification defined to run over the same twisted-pair and fiber- optic cabling as 10Base-T Ethernet. Specifically, 100Base-TX supports Category 5 twisted-pair wiring and 100Base-T4 supports Categories 3, 4, and 5 twisted-pair wiring. The primary difference between TX and T4 technology is that TX uses 2 pairs of wire and T4 uses four pairs of wire to transmit data at 100 Mb/s. The maximum distance between the repeater and network device over twisted-pair is 100 meters.

In addition to differing cabling standards, Fast Ethernet is defined to run over two different types of repeaters, which are classified as either Class I or Class II.

The Class I specification allows one repeater in a network segment. A Class I repeater can support only the network devices connected to it.

The Class II specification allows up to two repeaters in a network segment. The maximum distance between two transmitting devices in a Class II configuration cannot exceed 205 meters. For example, if the network devices connected to the repeaters are at the maximum distance of 100 meters, the repeaters must be no more than 5 meters apart. Compaq Smart Uplink technology overcomes the repeater hop limitations in the Fast Ethernet specification by allowing virtually unlimited expansion as your network grows.

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