DSU Operations
4-31
3610-A2-GB91-90
July 1999
Configuration Worksheets, summaries of configuration
option sets, are provided in
Appendix B
. They can be used
for reference, or for recording configuration option
changes or configuration option sets stored in Usr1, Usr2,
or Usr3.
Poll List
The Poll List (PList) submenu maintains or changes a
DSU’s poll list. A poll list identifies all DSUs or DBMs
one level downstream in the network. A control DSU
includes its tributary DSUs, or DSUs and DBMs in its poll
list. A backbone tributary DSU includes any extended
control DSUs, DBMs, or APL modems that are attached
to the diagnostic channel (DC).
For customers migrating from DATAPHONE II or
older COMSPHERE DSUs to the 3600 Series DSUs (with
firmware Release 4.25 or greater), operating with Mixed
diagnostics enables the 3600 Series DSU to work with
tributary DSUs that support disruptive diagnostics.
Tributaries that do not support disruptive diagnostic types
of 2500, 2600, 3600e, and 3600s must not be on the
control DSU’s poll list; otherwise, the control DSU will
time-out waiting for an upstream diagnostic message from
a DSU that is incapable of sending such a message.
PList is only available in the Local branch and only to
a DSU configured with nondisruptive and mixed
diagnostics. To access PList from the top-level menu,
make the following selections:
•
Local (F1)
•
Confg
•
PList
When PList is selected, four selections are displayed.
Table 4-11 lists the PList selection options and their
function.
F1
Poll List:
Displ
Clr
Chang
F2
F3
Acq
Press the
key, view the additional selections.
Table 4-11
PList Options and Their Function
Selections
Function
Displ
Displays each of the addresses
in the poll list.
Clr
Clears (erases) all addresses
from the poll list.
Chang
Selectively adds, deletes, or
changes address in the poll list.
Add
Adds the tributary to the control
DSU’s poll list. For MCMP only,
and only appears for a tributary
DSU.
Acq
Polls all valid addresses and
adds those addresses that
respond to the poll list.
Displaying the Poll List
To display the poll list:
F1
Poll List
Displ
Clr
Chang
F2
F3
F1
Poll List:
27
F2
F3
The number after Poll List is the network address of
the poll list member. Press the F1 (
↑
) or F2 (
↓
) key to
display additional addresses.
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