Visara LINCS Central Control - Manual (Page 160)

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LINCS Central Control
707024-002
Traffic Monitor Menu
This group of tests may be very useful if you are familiar with communication protocols,
however in most cases you will be using these utilities to capture data for analysis by Visara
engineers. These traces are included in Dumps. Access to these utilities may allow capture of
data without having to dump the LINCS platform.
Traffic Monitor Menu LINCS C8.2 Central Control
Item Description
1 Host Monitor Menu
2 Line/Channel Monitor Menu
3 Trace Utility Menu
4 Printer Sharing Monitor Menu
Select Item: Depress Enter
PF: 1-Menu
The Traffic Monitor menu allows you to select a monitor trace.
• The Host Monitor selection (item 1) allows definition and selection of a Host Monitor
Trace, which traces the protocol layer above the Link layer.
• The Line/Channel Monitor selection (item 2) allows selection of the Link Layer
Line Trace. Line traces are available for the following interfaces:
• SCC
• HSC
• Bus and Tag Channel
• ESCON
• The link level trace is currently available for Token Ring and Ethernet via the Trace
Utility menu, but require Visara engineering involvement.
• The printer sharing monitor monitors between bracket printer sharing.
Host Monitor Menu
The Host Monitor allows you to trace the protocol layer above the Link layer. You can trace
SNA and non-SNA datastreams on a per host, per port, or per LU basis, and then display the
traced data. By default, the host monitor is set to monitor all LUs at IML.
The host monitor can capture and display SNA TH/RH/RU data for remote-attached LINCS
nodes (SDLC/X.21/X.25), Token Ring, and Ethernet-attached DSPU LINCS nodes, and
Channel-attached LINCS nodes. All SNA data is displayed as hexadecimal data.
The host monitor can also capture and display non-SNA data for remote-attached LINCS
nodes (BSC), and Channel-attached (ESCON or Bus and Tag) LINCS nodes. All non-SNA
events are translated to English mnemonics and data associated with the event is displayed in
hexadecimal.
The amount of memory allocated for storing the host monitor data varies according to the
hardware and software configuration, but is limited in size. After all memory has been allocated
for system use, the remaining memory is allocated for the host monitor. This memory is
equally divided between all host circuits configured on each line. Once a trace buffer has
filled, the trace buffer wraps. This makes it important to pull the information off as soon after
an event occurs as possible. There are no provisions in LINCS to save the trace off as a file, so
you must either screen scrape the information or dump the LINCS platform. One good option