Allied Telesis AT-8550SP - Manual (Page 63)

AT-8500 Series Fast Ethernet Switch Installation Guide
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❑
You should verify that you are using the appropriate type of
fiber optic cabling. For an AT-8516F/xx Series switch, refer to
Planning the Installation on page 48. For an optional GBIC
module, refer to the GBIC Installation Guide. For an optional
fiber optic expansion module, refer to the Expansion Module
Installation Guide.
❑
You should verify that the operating specifications of the
switch’s fiber optic port are compatible with the fiber optic
port on the remote end node. For example, you cannot
connect a fiber optic port with a maximum distance of 2
kilometers and an operating wavelength of 1310 nm to
another fiber optic port that has a maximum distance of 40
kilometers (24.8 miles) and an operating wavelength of 1550
nm. For fiber optic ports specifications, refer to AT-8516F/SC
Fiber Optic Port Specifications on page 86.
❑
If your network topology will contain a loop where two or
more network devices can communicate with each other over
more than one data path, do not connect the network cables
forming the loop until after you have activated a spanning
tree protocol on the switch. Data loops can adversely affect
network performance. For information on spanning tree, refer
to the AT-S62 Management Software User’s Guide or
AT-S62 Command Line User’s Guide.
❑
If you are creating a port trunk, do not connect the cables of
the trunk to the switch until you after have configured the
trunk using the switch’s management software. Connecting
the trunk cables to the switch before you have configured the
software will result in a data loop, which can adversely affect
network performance. For instructions on how to configure a
port trunk, refer to the AT-S62 Management Software
User’s Guide or AT-S62 Command Line User’s Guide.
4. If you installed a fiber optic or twisted pair expansion module,
stacking module, GBIC module, or SFP module, connect the data
cable to the port on the module.
Note
If you are installing a DC powered switch, go to Wiring a DC
Powered Unit on page 66.