Aggregate Switched Backup For A Multipoint Configuration - Paradyne COMSPHERE 3610 Operator's Manual

NOTE
In a multipoint aggregate
switched configuration, if the
DSU has rate adaption or the
configuration option M-PtSymPrt
(Multipoint Symmetrical Port)
enabled, partial backup is not
supported. In this case, when
backing up any set of drops, all
drops will be backed up (full
backup).
To establish partial backup, command the control
DBMs to call the remote DBMs using the Dial command
(6800 Series NMS or DCP) followed by the Standby
Facility command (sf from the 6800 Series NMS or
Dial from the DCP). The 6700 Series NMS provides
two choices from the Dial Standby status: Return to Lease
or Return to Dial. The DSU's timing is taken from the
DDS network.
To establish full backup, send a Standby Facility
command. Enter sf from the 6800 Series NMS or Bkup
from the DCP to the control DBMs to call the remote
DSU. The 6700 Series NMS software provides a
Commands pull-down window to access Standby Facility.
Figure 1-7. Aggregate Switched Backup for a Multipoint Configuration
3610-A2-GB91-90
The DSU's timing is taken from the source specified in
the AgSw Timing (Aggregate Switch Timing)
configuration option.
During full backup aggregate
switching, commands are routed
over the aggregate port to the
remote DSU or DBM. Only two
tests are available to test the DDS
facility, Digital Test and Bit Error
Rate Test (aggregate versions
only). These tests or a
network-initiated loopback may
disrupt data routed over the
backup circuits if the Aggregate
Switch Timing configuration
option is set to Aggr.
Refer to Figure 1-7 for a sample aggregate switched
backup for a multipoint configuration. The control DSU is
configured so that AggrSwitch is enabled and
AgSw Timing is set to Int. The bridge is configured so
Bridge Timing is set to Ext for Port 1. The DBMs are
configured so that TxClkSource is set to Ext.
July 1999
Introduction
NOTE
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