D-13610-A2-GB46-60 December 1996
SNA Diagnostics
SNA Diagnostic Interface D-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LPDA-2 Addressing D-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SNA Diagnostic Interface
The SNA Diagnostic Interface option is compatible
with IBM’s LPDA-2 (Line Problem Determination Aid,
Revision 2
) protocol. Management of 3600 Series DSUs
by LPDA-2 can be enabled from:
• The front panel
• COMSPHERE 6700 or 6800 Series NMS
This feature is compatible with all other options
available to the 3600 Series DSUs: DBM, MCMP
, and
TDM. However, the SNA Diagnostic Interface option is
supported via Port 1 on a MCMP or TDM circuit card.
The 3600 Series DSUs operating with the SNA
Diagnostic Interface option emulate IBM 5822 DSUs.
The 3600 Series DSUs are data compatible, but they are
not diagnostically compatible with IBM 5822 DSUs. A
mixture of 3600 Series and IBM 5822 DSUs will not
support LPDA-2 diagnostics. The SNA Diagnostic
Interface option must be enabled in each control and
tributary DSU.
The 3600 Series DSU responds to commands from an
NMS or NetView on a first-come, first-served basis. The
NetView operator can monitor DSU parameters and line
status and can initiate tests from NetV
iew. DSU
configuration options cannot be changed; this is a
NetView constraint. An operator of a 6700 or
6800 Series NMS can change network configuration
options as well as perform tests.
The SNA Diagnostic Interface firmware is installed in
the carrier-mounted Model 361
1 DSU and the standalone
Model 3610 DSU. Either model may be configured as
the control of a circuit that is to be managed by the
NetV
iew management system.
The LPDA-2 option must be enabled from the
Configuration branch (Table 4-5).
D
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