365-575-102 Operation:
Issue 8.0, July 2002 Page 1 of 6
NTP-003
Establish Dual Ring Interworking (DRI) STS-3 (or
STS-1) Cross-Connections
DOITEMSBELOWINORDERLISTED........ FORDETAILS,GOTO
1. Overview: This operations procedure is used to establish the necessary
cross-connections at the primary and secondary nodes of an FT-2000 2-fiber
ring network. These cross-connections are necessary to support dual ring
interworking operation with a second SONET ring network. This procedure
can be performed from any node in the FT-2000 2-fiber ring network.
Cross-connections made to the wrong points can cause service interruptions.
Dual ring interworking (DRI) operation is only supported in Software Releases
4.1 and later.
For Releases 6 and earlier, an electrical low-speed interface circuit pack
(DS3 and/or STS1E) has three low-speed ports. All three ports associated
with the slot will be affected by a slot-to-tributary or a tributary-to-slot
cross-connection.
For Releases 6 and earlier, an optical low-speed interface circuit pack (OC-3)
operates on a slot basis and is affected by a slot-to-tributary or a
tributary-to-slot cross-connection.
Obtain the operation instructions (work order)
that indicates the required cross-connections.
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2.
NOTE:
The primary node normally carries traffic via a DRI cross-connection.
From the operation instructions, identify and
record the target identifier (TID) of the primary
node.
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