Nortel Networks NTRN10AN, 3500 manual IPTR-2, IPTR-3, IPTR-4, IPTR-1

2-40Operation, administration, and maintenance (OAM) features

Special provisioning considerations for inter-ring hub node of OPE virtual rings or OPE ring spanning Layer 1 subtending rings

In the case where you provision an RPR spanning multiple Layer 1 (SONET) rings (see Figure 2-20 on page 2-41and Figure 2-21 on page 2-42), the hub node will require the use of two IPTR ring names for each RPR, to distinguish the two pass-through connections from one another. Two different provisioning scenarios and their cross-connect provisioning rules are listed in Table 2-5and Table 2-6.

Table 2-5

Scenario 1: there are already RPRs provisioned on the hub node

RPR	Nodal IPTR ring name	Side 1 Optic	Side 2 Optic
	(example names)
first RPR (see Note)	IPTR-1 (see Note)	slot 11 or 12 optical facility	tributary optical facility
	IPTR-2	slot 11 or 12 optical facility	tributary optical facility
second RPR	IPTR-3	slot 11 or 12 optical facility	tributary optical facility
	IPTR-4	slot 11 or 12 optical facility	tributary optical facility
•	•	•	•
•	•	•	•
•	•	•	•
Nth RPR	IPTR-n	slot 11 or 12 optical facility	tributary optical facility
	IPTR-n+1	slot 11 or 12 optical facility	tributary optical facility
Note: "first RPR" and "IPTR-1" represent the next time you provision an RPR on the hub node.
Table 2-6
Scenario 2: there are no prior RPRs provisioned on the hub node
RPR	Nodal IPTR ring name	Side 1 Optic	Side 2 Optic
	(example names)
first RPR	IPTR-1	slot 11 or 12 optical facility	tributary optical facility
	IPTR-2	tributary optical facility	slot 12 or 11 optical facility
second RPR	IPTR-3	slot 11 or 12 optical facility	tributary optical facility
	IPTR-4	slot 11 or 12 optical facility	tributary optical facility
•	•	•	•
•	•	•	•
•	•	•	•
Nth RPR	IPTR-n	slot 11 or 12 optical facility	tributary optical facility
	IPTR-n+1	slot 11 or 12 optical facility	tributary optical facility

OPTera Metro 3500 Multiservice Platform NTRN10AN Rel 12.1 Standard Iss 1 Apr 2004