Allied Telesis AT-iMG7x6MOD series, Installation Manual

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AT-iMG746MOD Installation Guide
Chapter 5: Turn-Up and Troubleshooting 43
Troubleshooting
This chapter contains information on how to troubleshoot the gateway in the event that a problem occurs.
Problem: Gateway is not operating correctly.
Solution: Reset the unit by disconnecting and then reconnecting the power cable.
Problem: The PWR LED is off.
Solution: Check the power cable to verify that it is not damaged and that it is connected correctly.
Problem: The SYST LED is on.
Solution: Unplug the power cable and plug it in again after 20 seconds. If the LED does not turn off, unplug
the power cable and contact Allied Telesis.
Problem: The WAN LED is off.
Solution: Check the following:
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Verify that the fiber optic port and FX/EPON fiber connector on the pigtail from the splice tray are clean.
Refer to Appendix B, “Cleaning Fiber Optic Connectors” on page 51 for information.
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Verify that the connector is properly seated in the fiber optic port.
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Verify that the fiber optic cable has an active light source.
Problem: The WAN (EPON connection) LED stays at red flashing (does not go to green).
Solution: Check the following:
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Verify that the fiber optic port and FX/EPON fiber connector on the pigtail from the splice tray are clean.
Refer to Appendix B, “Cleaning Fiber Optic Connectors” on page 51 for information.
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Verify that the iMAP is trying to configure the ONU. (Verify that the ONU with the corresponding MAC
has been configured on the EPON port on the iMAP.)
Problem: The WAN (EPON connection) LED is ON but the iMG is not passing traffic..
Solution: Check the following:
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Check the VLAN configuration to ensure the correct VLANs have been configured.
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At the iMAP, check the port’s state on the ONU.
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At the iMAP, check the ONUs state on the OLT.
RJ-45 LED Left - Link
- ON - A LAN link has been established
- OFF -A LAN link has not been established
Right - Ethernet Activity
- ON - A connection has been established
- OFF -A connection has not been established
- Flashing - The link is active
Table 3. LEDs and Meanings (Continued)