Analyze Why the Device Link Is Missing

If the ifconfig(1M) command cannot find a device, the following message is displayed in the output:

...
cannot open igb0; link doesn't exist
...

1. Check the OS.

   • If the OS is Oracle Solaris 10 8/11, skip to Step 2.

   • If the OS is Oracle Solaris 11, use the dladm(1M) command to plumb the driver. See the dladm(1M) man page for instructions.

2. Check that the adapter is seated properly in its slot, that the cables are properly attached, and that the LEDs are functioning.
3. Use the prtconf(1M) or scanpci(1M) command to ensure that the device is installed.
4. If the device exists, check the /etc/driver_aliases file to ensure that the file contains an igb entry that corresponds to the name for the device.
5. If the entry exists, check the /etc/path_to_inst file to ensure that the file contains an igb entry.

   Removing a device and reseating it in another slot does not always clean up the device tree. If this is the case, you must remove the device tree and reboot the system. See Oracle Solaris Administration: Network Interfaces and Network Virtualization for more information.

Related Information

• Analyze a Port Hang

• Analyze Slow Network Performance