Expand Configuration and Management Manual (G06.24+)

Troubleshooting
Expand Configuration and Management Manual—523347-008
21-16
WAN Subsystem Problems
Ethernet ports to the same segment, either omit ALTTCPIP or set it to a NonStop
TCP/IP process that does not exist. Both solutions will result in the following EMS
message: “Connected to Wrong ETHERNET PORT.”
•
The SWAN concentrator’s Ethernet ports are reversed. If the ports are reversed,
you will receive the following EMS message: “Connected to Wrong ETHERNET
PORT.”
•
There is a firmware failure in a communications line interface processor (CLIP)
prior to the FIRMUP procedure. Power cycle the SWAN concentrator if the kernel
is nonresponsive.
For detailed information about configuring a SWAN concentrator, refer to the WAN
Subsystem Configuration and Management Manual.
WAN Subsystem Problems
Expand line-handler processes and $NCP are WAN subsystem devices; they rely on
various WAN subsystem components to operate correctly. This subsection provides
WAN subsystem troubleshooting guidelines and identifies common WAN subsystem
configuration problems.
Troubleshooting Check List
Use the check list provided in Table 21-9 to solve problems related to the WAN
subsystem.
Table 21-9. WAN Subsystem Problem-Resolution Check List (page 1 of 2)
Task Procedure
Check the state of the WAN
subsystem manager process
($ZZWAN).
To determine if $ZZWAN is running, use the
following SCF command:
STATUS PROCESS $ZZKRN.#ZZWAN
If $ZZWAN is not running, it must be started. See
the WAN Subsystem Configuration and
Management Manual for details.
Check the configuration of the WAN
subsystem manager process
($ZZWAN).
To display configuration information for $ZZWAN,
use the following SCF command:
INFO PROCESS $ZZKRN.#ZZWAN
If $ZZWAN is not configured correctly, it must be
reconfigured. See the WAN Subsystem
Configuration and Management Manual for details.