7-13
Cisco ONS 15530 Configuration Guide and Command Reference
78-14227-01, Cisco IOS Release 12.1(10)EV2
Chapter7 Configuring APS
Configuring Switch Fabric Based Line Card Protection
Note Splitter protection and y-cable protection cannot be configured with switch fabric based protection.

Considerations for Using Switch Fabric Based Line Card Protection

The following considerations apply when considering the use of line card protection:
•Switch fabric based line card protection does not protect against failures of t he client equipment or
the ESCON multiplexing line card. To protect against such failures, use client based line card
protection.
•A fully provisioned single shelf configuration can support up to two channels with switch fabric
based line card protection. A fully provisioned multiple shelf configuration can support up to
32 c hannel s in switch fabric ba sed line car d protec tion mode.
For more information about multiple shelf nodes, see Chapter8, “Configuring M ultipl e Shelf
Nodes.”
•Switch fabric based line card protection supports revertive behavior. With revertive behavior, the
signal automatically switches back to the working path after the signal failure has been corrected.
The default behavior is nonrevertive.
•To simplify system management, terminate the client signal on line cards of the same channel. In
this way the client signal maps to the same WDM wavelength on both the wo rkin g a nd pr ote cti on
paths.
•Configure unique flow identifiers on the ESCON multiplexing line card interfaces. Duplicate flow
identifiers interfere with switchovers between line cards.
•Be sure that the subinterface on the protection line card does not have a configured cross connecti on.
Such cross connection interfere with switchovers.
Proper physical configuration of the system is critical to the operation of switch fabric based line card
protection. For detailed information on shelf configuration rules, ref er to the Cisco ONS 15530 Planning
and Design Guide.
Configuring Switch Fabric Based Line Card Protection
To configure switch fabric based line card protection, use the following commands:
Command Purpose
Step1 Switch# show connect Displays the cross connect configuration.
Step2 Switch# configure terminal
Switch(config)#
Enters global configuration mode.
Step3 Switch(config)# connect
{waveethernetphy | tengigethernetphy}
slot/subcard.subinterface portgroup
slot/subcard/port [override]
Configures cross connections on the line card.
Step1 Switch(config)# redundancy
Switch(config-red)#
Enters redundancy configuration mode.