Lucent Technologies DDM-2000 OC-3, User & Service Manual

Page: 485 / 2536

363-206-285
Administration and Provisioning
Issue 3 June 2001 8-45
5. Status and alarm conditions can be present during the provisioning
operation but will clear once the last ring cross-connection for this DS1
service is completed. If they do not, the
rtrv-alm;
and
rtrv-crs-vt1;
commands can be used to isolate the problem. See the TOP section of this
manual (Volume II).
6. Log in or remote log in to all the nodes and verify appropriate drop or pass-
through ring cross-connections.
7. Test both paths around the ring. Since DDM-2000 OC-3 uses non-revertive
path switching to minimize the number of hits on services, the initial path
selection is arbitrary. Use
rtrv-state-path
and
sw-path-vt1
commands to test both ring paths around the ring network at the drop
nodes of the new service. The
sw-path-vt1
command should be limited
to the addresses that are being tested. For the example, the commands
are
sw-path-vt1:m1-1-2-3
and
sw-path-vt1:m2-1-2-3
.
The
rtrv-state-path
and
sw-path-vt1
commands use a slightly
different VT1.5 ring channel designations from the cross-connect
designations because these commands need to identify which of the two
paths around the ring is currently active. If the ring path and selected VT1.5
channel are being received on main 1, the active ring channel designation
for the
rtrv-state-path
and
sw-path-vt1
commands will be
m1-1-
2-3
, where the
m1
is the path received on main 1. If the ring path and
selected VT1.5 channel are being received on main 2, the ring channel
designation for the
rtrv-state-path
and the
sw-path-vt1
commands
will be
m2-1-2-3
, where the
m2
is the path received on main 2. The
DDM-2000 OC-3 allows a per-path designation on the
sw-path-vt
command. This assures that only the new DS1 service being provisioned
will be subject to protection switch hits. If this is not the first DS1 service
being added to the ring, it is strongly recommended that the pulling of
circuit packs or fibers to test the protection path not be done, since it would
subject existing DS1 services to protection switch hits.