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preserve-interface

Syntax


            
               preserve-interface;

Hierarchy Level


            
               [edit interfaces interface-name sonet-options
                  aps]

Release Information

Statement introduced in JUNOS Release 7.6.

Description

Provide link PIC replication, providing MLPPP link redundancy at the port level. This feature is supported with SONET APS and the following link PICs:

Channelized OC3 IQ PIC
Channelized OC12 IQ PIC
Channelized STM1 IQ PIC

Link PIC replication provides the ability to add two sets of links, one from the active SONET PIC and the other from the standby SONET PIC, to the same bundle. If the active SONET PIC fails, links from the standby PIC are used without triggering link renegotiation. All the negotiated state is replicated from the active links to the standby links to prevent link renegotiation.

Usage Guidelines

See Configuring Link State Replication for Redundant Link PICs.

Required Privilege Level

interface—To view this statement in the configuration.

interface-control—To add this statement to the configuration.