OSI/AS Configuration and Management Manual

Troubleshooting Guide
OSI/AS Configuration and Management Manual—424119-001
8-60
Troubleshooting Example
Step 5: Analyze the Trace Using PTrace
The SCF command
ptrace from trx1; select l3
starts the PTrace trace formatter on the trace in TRX1, selects the Layer 3 mask, and
displays the following:
The following PTrace command records all the trace records selected by the select mask:
record all
The following are the trace records selected by PTrace:
Record #37 shows the call request packet. The two fields after the call request are the
SNPA addresses (X.25 subnetwork addresses), each 12 digits long (%HCC). The called
address (X25DESTADDR) is 408333222203. The calling address (SRCADDR plus the
subdevice port number) is 408333111102. The length of the facility field is 03 bytes.
The facility field is 430202; this is the negotiated window size.
Record #60 shows that a clear packet was received with a reason code 81, in response to
the call request packet. This reason code means that no subdevice on the remote side
was able to accept the connection.
Trace of: \MARS.$X251, Type (61,0).
Ptrace Data File: $DIAG.MYSTUFF.TRX1
Trace started: 10/16/91 05:23:05.79
First trace entry: 10/16/91 05:23:05.79
Last trace entry: 10/16/91 05:24:20.47
Trace file is an extended format.
Trace entry size limit: 128
10/16/91 05:23:13:390 >000.000 #37 L3 Pkt Out
SDN #001/%001 LEN #0024 GFI(0001) MOD8 LGN/LCN $001
Call^req
000: 1001 0BCC 4083 3322 2203 4083 3311 1102
008: 0343 0202 0000 0000
CALLED ADDRESS ($C) 408333222203
CALLING ADDRESS ($C) 408333111102
FACILITIES ($03)
CCITT STANDARD X.25 FACILITIES ---
WINDOW SIZE FROM CALLED DTE: 02 FROM CALLING DTE: 02
USER DATA ($04) 00000000
10/16/91 05:23:13:420 >000.030 #60 L3 Pkt In
SDN #001/%001 LEN #0005 GFI(0001) MOD8 LGN/LCN $001
Clear
000: 1001 1300 81
CAUSE CODE: $00
DIAGNOSTIC CODE: $81/129