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COMSPHERE 3550 Series Data Service Units
5-8 February 1995 3550-A2-GB20-10
Table 5-2
Diagnostic (DSU) Configuration Options
Diag Type: Disr
Next NonD Disr Mixed None Prev
Diagnostic Type
. This configuration option defines the diagnostic interaction between control and tributary DSUs. All
DSUs on the same circuit should be set the same (e.g., if the control is set to NonD, all its tributaries should also be set
to NonD).
NonD — Select nondisruptive diagnostics for diagnostic data to be transmitted between the control and the
tributary DSUs over a separate diagnostic channel.
Disr — Select disruptive diagnostics for diagnostic data to be carried between the control and the tributary DSUs
over the same (primary) channel as user-transmitted data. User-initiated commands are sent between the
control and the tributary DSUs disruptively, interrupting data.
Mixed — Select if operating over a multipoint network. This setting supports nondisruptive health and status
updates, but user-initiated commands are sent between the control and the tributary DSUs disruptively,
interrupting data.
None — Select none if only local diagnostics are to be allowed; that is, there will be no diagnostic communications
with remote devices.
2nd Ch(bps): 400
Next 100 400 800 1200 1600 Prev
In-band Secondary Channel Diagnostic Transport Speed in bps
(only displayed when Diag Type is set to NonD and Full
Mode is enabled). This configuration option allocates the DSU’s port bandwidth when there is no excess bandwidth
available for in-band secondary channel transport (used for diagnostic data) operation.
How to Select Bandwidth: Select one of the valid diagnostic speeds from the table below for the DSU’s port and the
DDS line’s speed, as specified in the
Rate(Kbps)
configuration option under the DSU option set. (Example: If the DSU’s
Rate(Kbps)
configuration option is set to 9.6 kbps, you can select 100, 400, 800, 1200, or 1600. If you select 400, the
resulting DSU port speed will be 9.2 kbps.)
NOTE: When The TDM/Flex is operating at a line rate greater than 19.2 kbps or with a multipoint configuration,
100 bps is not a valid in-band secondary channel transport rate.
If the DSU
Rate(Kbps)
is equal to Port Speed, or
if the underspeed port speed and sum of the
TDM/Flex ports is equal to the
aggregate speed on the DSU: Valid diagnostic speeds are:
1.2 100, 400
2.4 100, 400, 800
4.8 100, 400, 800, 1200, 1600
9.6 100, 400, 800, 1200, 1600
19.2 100, 400, 800, 1200, 1600
38.4 100, 400, 800, 1200, 1600
48 100, 400, 800, 1200, 1600
56 100, 400, 800, 1200, 1600
64 100, 400, 800, 1200, 1600