Compaq Netelligent Repeater and Switch Products
C
OMPAQ
N
ETELLIGENT
R
EPEATER AND
S
WITCH
P
RODUCTS
(cont’d.)
8
041A/0996
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
ETELLIGENT
100 M
B
/
S
E
THERNET
R
EPEATER
P
RODUCTS AND
P
OSITIONING
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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