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1–44 edge switch 2/16 service manual
General InformationI
• 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 1–21.
Figure 1–21: 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 1–22.
Figure 1–22: Null Modem Cable
Tools Supplied by Service Personnel
The following tools are expected to be supplied by service personnel performing
switch installation and maintenance actions. Use of the tools may be required to
perform one or more installation, test, service, or verification tasks.
• Scissors or pocket knife - A sharp cutting edge (scissors or knife blade) may be
required to cut the protective strapping when unpacking the switch, HAFM server,
Ethernet hub, or replacement FRUs.