Allied Telesis AT-8350GB - Manual (Page 68)

Installation
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‰ 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-S41 Management Software User’s Guide for the
AT-8350GB Switch.
2. If you installed an optional GBIC module, remove the dust cover from
the GBIC port. Store the dust cover in a safe place so that you can use
it to protect the port if you disconnect the fiber cable.
Figure 40 Removing the Dust Cover from a GBIC Module
Caution
Do not remove the dust cover if you do not intend to connect the
GBIC cable at this time. Dust contamination can adversely impact
the operations of the port.
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