PRV-1059
User Manual
MNL-0490-01 RevD4 REF. ECO-3163
Effective: 01 Feb 10
Page 7 of 27
Chapter 2 Quick Start-up
This section describes the installation of the PRV-1059.
Installation
The non-VLAN switch does not require drivers or software configuration. Users can immediately use any of the
features of the product simply by attaching the cables and supplying power to the unit through either the PC/104
bus or 2-pin power header, depending on the version purchased. The VLAN-enabled switch requires use of the
Parvus cable (sold separately) and software to configure the VLAN settings. Configuration and connection of the
VLAN switch is described in chapter 5.
Carefully remove the board from its anti-static bag. For PC/104 applications, make sure power is turned off, then
carefully line up all pins before insertion. Attach the 10/100 Ethernet Switch into a PC/104 card stack by mating
PC/104 bus connector to PC/104 bus connector.
Installing Network Cables and Establishing Connectivity
The following types of cabling can be used with the 10/100 Ethernet Switch:
10BaseT Category 3,4 or 5 UTP/STP
100BaseTX Category 5 UTP/STP
Twisted-pair crossed cabling (10BaseT or 100BaseT) is recommended yet not required for the uplink connection
(switch-to-switch). Straight cabling for the remaining port connections (switch-to-PC) is similarly recommended,
but not required.
The board supports Auto MDI-/MDIX Crossover, which allows it to determine whether or not it needs to cross
over between receive/transmit pairs, virtually eliminating the need for an external crossover cable. If it
interoperates with a device that cannot automatically correct for crossover, the switch makes the necessary
adjustment prior to commencing auto-negotiation. Similarly, if the switch interoperates with a device that
implements MDI-MDIX crossover, a random algorithm determines which device performs the crossover.
The IEEE802.3ab specification, although well-written, does not clearly specify all linking conditions which may
occur between the various modes of operation of Ethernet, taking into account auto-crossover, auto-negotiation,
and forced modes of operation (10/100 forced speeds using either full or half duplex). As a result, mixing auto-
crossover with forced modes of operation may lead to initial link problems whenever a cable is first “live”
connected. Also, because of incompatibilities between various switch IC manufactures related to the IEEE
802.3ab specification, occasionally, link connectivity is not established immediately. When plugging in a new
cable, if a link is not established within about 10 seconds (usually much faster!), then the user should simply
cycle the power to the switch, turning it off and back on. In all cases, cycling power should result in a successful
link, even when auto-detecting through forced modes of operation (10-base T/half, 10-base T/full, 100–base
T/half and 100-base T/full). If it isn’t possible to cycle power, then cycling power of the associated link partner
may be an option. At worst, and in rare cases, if power cannot be cycled, then eventually (within several minutes
at the most) a link should successfully be established. Therefore, in these extreme rare cases, patience may be
needed. However, once link is established, the switch will not miss packets outside of normal collision events,
even when operating in harsh conditions using very long cables up to 100-meters in length.
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