Expand Configuration and Management Manual (G06.24+)

Troubleshooting
Expand Configuration and Management Manual—523347-008
21-5
SCF Commands
Example 21-1 shows an SCF LISTDEV display produced by a LISTDEV TYPE 63
command.
Expand Subsystem SCF Commands
Table 21-3 lists the Expand subsystem SCF commands that are most helpful when
attempting to identify Expand subsystem problems.
Example 21-2 and Example 21-3 show example SCF STATS and SCF STATUS
displays. The U-Frames counter in the SCF STATS command display for a SWAN
Concentrator line shows the number of unsequenced or nonsequenced frames sent
and received by the Expand line-handler process. This counter may be high during line
setup; a large number of U-frames at any other time may indicate a fatal problem. (The
U-Frames counter is highlighted in bold type.)
Example 21-1. SCF LISTDEV Display
LDev Name PPID BPID Type RSize Pri Program
26 $PBAL4 2,13 3,13 (63,1 ) 0 199 \TAHITI.$SYSTEM.T9057.LHOBJ
66 $A10 2,14 3,12 (63,6 ) 12 199 \TAHITI.$SYSTEM.SYS01.LHOBJ
68 $IPCOW 1,18 0,17 (63,0 ) 3 199 \TAHITI.$SYSTEM.SYS01.LHOBJ2
70 $FOXCOW 2,12 3,14 (63,3 ) 1 199 \TAHITI.$SYSTEM.SYS01.LHOBJ2
71 $EX25COW 2,11 3,15 (63,0 ) 12 199 \TAHITI.$SYSTEM.SYS01.LHOBJ
87 $B30S 2,10 3,16 (63,5 ) 12 199 \TAHITI.$SYSTEM.SYS01.LHOBJ
88 $B21 2,13 3,13 (63,6 ) 12 199 \TAHITI.$SYSTEM.T9057.LHOBJ
89 $B20 2,13 3,13 (63,6 ) 12 199 \TAHITI.$SYSTEM.T9057.LHOBJ
124 $ZEXP 1,23 0,23 (63,30) 132 180 \TAHITI.$SYSTEM.SYS01.OZEXP
Table 21-3. Identifying Problems With Expand Subsystem SCF Commands
Command Use
STATS $device_name Provides detailed statistical data, most of which can be
reset.
STATUS $device_name Displays the dynamic state of the object, along with
modifiable information.
INFO PROCESS $NCP, LINESET Verifies path and link state, checks logical device
(LDEV) numbers, and logs file-system error messages.
INFO PROCESS $NCP, NETMAP Displays the nodes currently connected, with a listing
of the current routing data.
PROBE PROCESS $NCP Displays status information about the intermediate
nodes in a path and displays the typical time to each
destination node.
Note. You should reset SCF statistics using the RESET command after starting a system or
line or resolving a problem.