Using Sfp Transceivers - 3Com OfficeConnect 3CDSG8 User Manual

Installing The Switch
When POST is complete, the Status LED turns green. If the Status turns yellow after POST, it
means that POST failed and the switch is unlikely to be fully functional. You should reload the
software via the console port and restart the switch. If this has not resolved the failure contact
your 3Com network supplier for assistance.
The following summarizes the possible colors for the Status LED after POST.
Table 5 Power LED POST Indications
Status Meaning
Green The unit is powered on and ready to use.
Yellow Power-on self-test failed. The Switch is in fail-safe mode.
This can happen if a port or ports fail when the Switch was
powered on.
The unit is not receiving power:
•
Verify that the power cord is connected correctly,
Off and then try powering on the Switch again
•
If the Switch still does not operate, contact your
3Com network supplier
If POST fails, try the following:
• Power off the Switch, and then power it on again. Check the Status LED and see if POST
was successfully completed.
• Restore the default configuration the Switch. Refer to the CLI commands appendix for
instructions on using the System Restore Default command
• Reload the software.
CAUTION: Resetting the Switch to its factory defaults erases all your settings.
You will need to reconfigure the Switch after you reset it.
If these do not resolve the issue:
• Check the 3Com Knowledgebase for a solution. To visit the 3Com Knowledgebase Web
site, start your Web browser, and then enter http://knowledgebase.3Com.com.
• Contact your 3Com network supplier for assistance.
________________________________________________________________

Using SFP Transceivers

The following sections describe how to insert an SFP transceiver into an SFP slot.
SFP transceivers are hot-insertable and hot-swappable. You can remove them
from and insert them into any SFP port without having to power down the
Switch.
Approved SFP Transceivers
The following list of approved SFP transceivers is correct at the time of publication:
• 3CSFP91 SFP (SX)
• 3CSFP92 SFP (LX)
21