Troubleshooting
Interpreting LED Error Patterns
Table
LEDs on Router Module’s Cover Plate |
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Router | Router | Hub | WAN | SNMP | Diagnostic Tips |
Fault | (LAN) | Net Fail | Mgt |
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| Net Fail |
| Fault |
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OFF | ON | * | OFF | OFF | A router software failure was detected. When this error occurs, this |
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| pattern of LEDs appears for only a few seconds until the router |
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| reboots (which will occur unless Auto Reboot in the configuration |
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| has been disabled). If Auto Reboot has been disabled, reset the |
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| router module to reboot it. |
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| After the router reboots, information about the failure will appear in |
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| the crash history (which can be displayed using the NCL Crash |
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| command) and in the event log (which can be displayed from the |
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| Main menu). |
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OFF | ON | * | * | ON | Replace the SNMP module. |
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OFF | ON | OFF | ON | OFF | Port failure detected. |
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| 1. Verify that the node at the other end is up and running. |
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| 2. If this error persists, make sure the WAN is specified correctly in |
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| the configuration. (Refer to “Create or Modify a Router |
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| Configuration”, page |
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| 3. If the error still persists, check for a fault in the network equipment |
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| or links. |
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| 4. If the error still persists, replace the WAN cable. |
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| 5. If the error still persists, replace the router module. |
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OFF | OFF | OFF | ON | OFF | Either a device has not yet been connected, or the connection to the |
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| remote device has been lost. The broken connection can be |
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| detected if the Remote signal & sense parameter is enabled in the |
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| configuration or if a protocol is running on this port. The circuit will |
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| be enabled again when the connection is restored. |
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| For |
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| enabled, then the WAN port is not hearing properly addressed |
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| faulty or disconnected network hardware or improper configuration. |
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OFF | OFF | ON | OFF | OFF | The router module’s LAN driver is unable to send data. (Data is sent |
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| by a protocol or when XCVR Signal Polling is enabled on the internal |
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| LAN port.) The failure may be due to faulty or disconnected network |
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| hardware, excessive collisions, or excessive deferrals. Call for |
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| service from your HP dealer or service provider. |
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*This LED is not important for the diagnosis. |
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Troubleshooting 4