Troubleshooting While Starting a SunATM Interface
There are many steps involved in making an interface active on an ATM network. Problems in your configuration may cause a failure at any number of points along the way. The following sections contain steps you can take to determine where in the process your system failed, and what to do to remedy the situation. If you continue to experience problems, information gathered from these steps will help your service provider diagnose the problem.
▼To Diagnose Generic Configuration Problems
1.Make sure that there is an entry for the interface in /etc/opt/SUNWconn/atm/ atmconfig.
Configuration of an interface begins during system boot. Configuration will be attempted for all interfaces listed in /etc/opt/SUNWconn/atm/atmconfig. For information about the format of this file, see “Editing the atmconfig File” on page 42, and the atmconfig(4) man page.
2.Check to see if any error messages were printed during the boot process. If there were error messages, see “Error Messages” on page 110.
3.Verify linkstate in qccstat(1M).
This command indicates the signalling status of your interface. If the linkstate is not DL_ACTIVE, your interface is not communicating properly with your switch.
■Make sure that your switch and interface are configured to run the same version of UNI signalling.
The SunATM software supports UNI versions 3.0, 3.1, and 4.0; set the version for each interface in the /etc/opt/SUNWconn/atm/atmconfig file.
■Verify that your interface is physically connected to the switch and that the switch sees the physical connection (most switches have a physical link LED for each port).
If your interface is a multimode fiber interface, one possible cause for a bad physical connection is that transmit and receive are swapped. “transmit” on your interface should be connected to “receive” on the switch, and “receive” on your interface to “transmit” on the switch. There is generally writing on one of the cables in a
Appendix D Troubleshooting and SunATM Error Messages 101
