Trouble Shooting Guide – FarSync Drivers – Linux
Connectivity Problems
Problem Symptom | Possible Cause(s) | Action |
---|---|---|
Kernel Oops when the command ifup/farifup hdlc0 is used | There were several releases of the 2.6 Kernel which had this bug, i.e. versions 2.6.23 to 2.6.25 inclusive. | Update to a later Kernel. |
No response from ping | Cable not plugged in | Make sure this cable is inserted to correct port A or B on the 2 port card and A, B, C or D on the four port card |
Remote address not correctly specified | Check that you are pinging the address as specified in the POINTOPOINT configuration parameter | |
Clock not present | Check that the correct (port wise) green LED is flashing while attempting to ping. Does the farutil command report that a clock is detected? If you have configured the clock source as external, then you are not receiving clock from your Service Provider, or you have a cable problem. |
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Firewall issues | Check the firewall settings on the local and remote ends of the connection. The firewall settings may be preventing the ping from working. Use a network monitoring tool, such as tcpdump, to see if there is any tx or rx activity. We also supply a simple monitor utility called farmon that will dump in hex any frames passing through the driver. Change to the common/ directory and type "make farmon" to build it. |
05-Oct-2011