Expand Configuration and Management Manual (G06.24+)

Troubleshooting
Expand Configuration and Management Manual—523347-008
21-11
Resolving Specific Network Problems
Resolving Specific Network Problems
This subsection provides checklists for solving the following specific network problems:
•
$NCP Problems
•
Expand Line-Handler Process Problems
•
SWAN Concentrator Problems
•
WAN Subsystem Problems
•
Expand-Over-X.25 Problems
•
Expand-Over-IP Problems
•
Multi-CPU Path Problems
$NCP Problems
Table 21-6 lists SCF commands that are useful for diagnosing problems with $NCP.
Table 21-6. Identifying $NCP Problems With SCF Commands
Command Use
STATUS DEVICE $ZZWAN.#NCP Displays the state of $NCP.
START DEVICE $ZZWAN.#NCP Starts $NCP.
INFO DEVICE $ZZWAN.#NCP
or
INFO PROCESS $NCP
Displays configuration information for $NCP.
CPUS Provides information about the number of nodes
known by the local node.
INFO PROCESS $NCP,
CONNECTS
Displays the systems that are connected or
connecting, and only the entry for which the
connection is established. If the path is a multi-CPU
path (superpath), the CONNECTS option displays all
of the paths in the multi-CPU path. It is basically a
summary of the NETMAP command, but shows only
the connected entries.
INFO PROCESS $NCP, LINESET Displays the status of a selected path and the status
of started lines that make up that path.
INFO PROCESS $NCP, NETMAP Provides best-path route identification, routing data
for the best path, and a list of the nodes currently
seen by the local node.
INFO PROCESS $NCP, PATHSET Displays the NCP pathmap information, similar to the
LINESET option but in a different format. This format
displays both the line-handler LDEV and name, as
well as the other information already in the LINESET
option.
INFO PROCESS $NCP, RPT Displays the information kept in the reverse pairing
table (RPT) for each multi-CPU path on the selected
system.