Universal Broadband Router Hardware Installation Guide

4-14
Cisco uBR10012 Universal Broadband Router Hardware Installation Guide
OL-18259-01
Chapter 4 Troubleshooting the Installation
Troubleshooting the HHGE Installation
The yellow FAIL LED blinks 1. The SFP GBIC has been rejected
because:
– An internal fault is detected.
– Not a Gigabit Ethernet SFP.
– Not a Cisco SFP.
– Two SFPs with identical
serial numbers are present in
the system.
– There is a hardware shut down
1. Replace with a Cisco SFP GBIC.
The green LINK LED does not light
when you plug in the Ethernet cable
1. No Ethernet connection to
upstream device.
2. The SFP GBIC was not fully
inserted or seated properly.
3. Negotiation is not configured
properly.
4. Hardware shut down for that port.
5. Improper SFP GBIC (FAIL LED
should blink).
6. Bad cable.
1. Make sure the upstream device has an
active Ethernet connection.
2. Reinstall the SFP GBIC.
3. Reconfigure negotiation.
4. Enable the port.
5. Replace with a Cisco SFP GBIC.
6. Replace the cable.
The green LINK LED is on, but does
not pass traffic
1. Negotiation is off, but set to on at
the remote end.
2. Internal loopback is enabled.
1. Set local and remote negotiation settings
to the same value.
2. Disable loopback.
3. ARP incomplete
4. IP address not configured
Table 4-2 Line Card Installation Troubleshooting (continued)
Symptom Possible Cause Corrective Action