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4.5 Confi gure > Analyser
Your unit can be confi gured to maintain a trace of activity taking place at the various ports and of the
layer 2 and 3 protocols. Trace information is stored in a circular buffer in memory. When the buffer is
full, the storage of new trace data starts at the beginning of the buffer again (overwriting the oldest
data). This buffer appears in the fi le directory as a pseudo-fi le called “ANA.TXT”.
The following is a typical trace showing activity on the D-channel:
----- 4-5-2002 13:11:50.260 ------ L2 DCHAN
SABME from NT to TE: COMMAND POLL SAPI=10, TEI=01,
42,03,7F,
---------
----- 4-5-2002 13:11:50.260 -----L2 DCHAN UA from TE to NT: RESPONSE FINAL SAPI=10, TEI=01,
42,03,73,
----- 4-5-2002 13:11:50.330 ------ L2 DCHAN I
FRAME from NT to TE: COMMAND SAPI=10, TEI=01, NS=00,
NR=00, 42,03,00,00,
X25 RESTART from DCE to DTE:
LCG=0 LCN=0 PTI
10, 00, FB,
07 00 ..
---------
----- 4-5-2002 13:11:50.330 -----L2 DCHAN I FRAME from TE to NT: COMMAND SAPI=10, TEI=01, NS=00, NR=01,
40,03,00,02,
X25 RESTART CONFIRMATION from DTE to DCE:
LCG=0 LCN=0 PTI
10, 00, FF,
---------
Both B and D-channel analysis can be enabled simultaneously if necessary and you can
select which LAPB and LAPD sources you wish to include in the trace by checking the
appropriate boxes.
Using the Web Page(s)
The Confi gure > Analyser web page allows you to turn the analyser “On” or “Off” and to determine
what information is included in the trace using the following parameters:
Analyser:
This parameter is used to turn the protocol analyser “On” or “Off”.
Protocol layers:
The check boxes shown under this heading are used to specify which protocol layers are included in
the protocol analyser trace. You can choose to generate a trace of the physical layer (Layer 1), the
Link Layer (Layer 2) protocol, the Network Layer (Layer 3) protocol or any combination, by checking
or clearing the appropriate check-boxes. In addition, you may select XOT (X.25 over TCP/IP) tracing if
this feature is included in your product.
IKE:
This checkbox is used to enable or disable the inclusion of IKE packets in the analyser trace when
using IPSec.