Specifications

2-12

Cisco ONS 15530 Planning Guide

OL-7708-01

Chapter 2 Protection Schemes and Network Topologies

Client Based Line Card Protection

Figure 2-8 Client Based Line Card Protection Scheme for 4-Port 1-Gbps/2-Gbps FC Aggregation Cards and 2.5-Gbps ITU

Trunk Cards

Considerations for Client Protection With 2.5-Gbps ITU Trunk Cards or 10-Gbps ITU Trunk Cards

The following considerations apply when using client protection:

• Due to their lower optical loss, we recommend using nonsplitter line cards for configurations with

client protection.

• Client protected configurations allow monitoring of the protection fiber without the OSC.

• Up to two channels can be client protected on a single shelf if the OSC is not supported; if the OSC

is supported, one channel can be client protected on a single shelf.

8-Port FC/GE Aggregation Cards

Figure 2-9 shows an example configuration that supports client protection using 8-port Fibre

Channel/Gigabit Ethernet aggregation cards and 2.5-Gbps ITU trunk cards.

4-port FC card

2.5-Gbps ITU trunk card

ITU trunk card

OADM

modules

West

East

SRC

LRC

120757

Active signal

Optical fiber

connection

Electrical backplane

connection

Standby

switch fabric

connection

Redundant

CPU switch

modules

Client

switch

2.5-Gbps