Electrical Card Protection - Cisco ONS 15454 Reference Manual

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Table of Contents

Card Protection

This chapter explains the Cisco ONS 15454 card protection configurations. To provision card protection,

refer to the Cisco ONS 15454 Procedure Guide.

Chapter topics include:

7.1 Electrical Card Protection

The ONS 15454 provides a variety of electrical card protection methods. This section describes the

protection options.

1:N protection configuration.

This section covers the general concept of electrical card protection. Specific electrical card protection

schemes depend on the type of electrical card as well as the electrical interface assembly (EIA) type used

on the ONS 15454 backplane.

15454-SA-ANSI and 15454-SA-HD (high-density) shelf assemblies.

When a protection switch moves traffic from the working/active electrical card to the protect/standby

electrical card, ports on the new active/standby card cannot be placed out of service as long as traffic is

switched. Lost traffic can result when a port is taken out of service, even if the standby card no longer

carries traffic.

7.1 Electrical Card Protection, page 7-1

7.2 Electrical Card Protection and the Backplane, page 7-5

7.3 OC-N Card Protection, page 7-13

7.4 Unprotected Cards, page 7-14

7.5 External Switching Commands, page 7-14

Table 1-1 on page 1-15

C H A P T E R

shows a 1:1 protection configuration and

Table 7-4 on page 7-6

details the specific electrical card protection

Table 1-2 on page 1-16

for the EIA types supported by the

Figure 7-2 on page 7-3

Cisco ONS 15454 Reference Manual, R7.0.1