Troubleshooting the SWAN Concentrator and WAN Subsystem

1 Make sure that the DLC task object code files are secured with "N" read access.
The DLC task object code files should be located in the $SYSTEM.CSSnn
subvolume.
2 Make sure that the TFTP server process is configured to use the correct location
for the DLC task object code files. The location of download files is specified by
the STARTUP attribute. (The default location is $SYSTEM.CSSnn.)
3 Check the status of the required WAN subsystem processes and objects and
their supporting processes and restart any processes and objects that are not in
the STARTED state.
4 Check the cable connections between the ServerNet adapters and the SWAN
concentrator and correct and cabling problems.
5 Check the LAN hardware and correct any LAN hardware problems.
Network Error Alarm
This alarm is generated when the software or hardware connection between the NonStop
S-series server and the SWAN concentrator is not operational.
To recover from this alarm, perform Steps 2 through 5 as described for SWAN Download
Error Alarm.
I/O Process Error Alarm
This alarm is generated when the connection between a WAN subsystem input/output
process (IOP) and the SWAN concentrator is not operational.
To recover from this alarm, perform Steps 2 through 5 as described for SWAN Download
Error Alarm.
SWAN Memory Error Alarm
This alarm is generated when a checksum or memory error occurs.
To recover from this alarm, you must reboot the SWAN kernel by power cycling the SWAN
concentrator.