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AT-8500 Series Layer 2+ Fast Ethernet Switches Installation Guide
67
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 85.
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 Guides.
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 Guides.
Cabling
Expansion
Modules
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.