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Tools and Test Equipment
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General Information
• Fiber-optic wrap plug - An SFP multimode (shortwave laser) or
singlemode (longwave laser) wrap plug is required to perform
port loopback diagnostic tests. One wrap plug is shipped with the
switch, depending on the type of port transceivers installed. Both
plugs are shipped if shortwave laser and longwave laser
transceivers are installed. The plug is shown in Figure 1-8.
Figure 1-8 Multimode and Singlemode Wrap Plugs
• Fiber-optic protective plug - For safety and port transceiver
protection, fiber-optic protective plugs must be inserted in all port
SFPs without fiber-optic cables attached. The switch is shipped
with protective plugs installed in all ports. A protective plug is
shown in Figure 1-9.
Figure 1-9 Fiber-Optic Protective Plug
• Null modem cable - An asynchronous RS-232 null modem cable
is required to configure switch network addresses and acquire
event log information through the maintenance port. The cable
has nine conductors and DB-9 male and female connectors. A null
modem cable is not a standard (straight-through) RS-232 cable.
Refer to Figure 1-10.