Specifications

2-4

Cisco ONS 15530 Planning Guide

OL-7708-01

Chapter 2 Protection Schemes and Network Topologies

Splitter Based Facility Protection

Figure 2-2 Splitter Protection with 8-Port Multi-Service Muxponders

A switchover is triggered in hardware by a loss of light on the receive signal.

Splitter Protection Considerations When Using 8-Port Multi-Service Muxponders

The following considerations apply when using splitter protection with transponder line cards:

• Because the signal splitter module on splitter 8-port multi-service muxponders introduces 3.55 dB

of loss in the transmit direction, we recommend using nonsplitter 8-port multi-service muxponders

for configurations where splitter protection is not required.

• The APS software that supports splitter protection can be configured as revertive or nonrevertive.

Unless a switchover request from the CLI is in effect, the system uses the working interface for the

active signal. After a system-initiated switchover to the protection interface occurs for signal quality

reasons, the active traffic can be put back on the previously failed working fiber after the fault has

been remedied. The fault can be remedied either automatically (revertive) or through manual

intervention (nonrevertive).

• Up to four channels can be splitter protected on a single shelf.

For rules on how to configure the shelf for splitter protection, see Chapter 6, “Example Shelf

Configurations and Topologies.” For instructions on configuring the software for splitter protection,

refer to the Cisco ONS 15530 Configuration Guide.

OADM

modules

West

East

SRC

CPU

LRC

OSC

Redundant

CPU switch

modules

Optical

fiber

connection

Electrical

backplane

connection

113953

8-Port multi-service

muxponders

LRC