Specifications

Cisco ONS 15327 Product Overview, R3.3

June 2002

Cisco ONS 15327 Product Overview

Network Configurations

Figure 30 shows a UPSR subtending from a BLSR. In this example, Node 3 is the

only node serving both the BLSR and UPSR. Optical cards in Slots 1and 2 serve

the BLSR, and optical cards in Slots 3and 4 serve the UPSR.

Figure 30 UPSR subtending from a BLSR

Linear Add/Drop Multiplexer Mode

In ADM configuration, intermediate nodes have direct access to eastbound or

westbound STS channels along a fiber route, and can connect any STS to any

other STS for transport along the network. ADM configurations eliminate the

need for costly “back-to-back” terminal configurations and can be enhanced with

1+1 protection for any or all transport spans in the system. Figure 31 shows an

ADM configuration.

Node 3

Node 1

Node 2

BLSR

Node 4

Slot 4

Slot 2

Slot 4

Slot 3

Slot 1

Slot 3

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