Juniper JUNOS 10.1 - CONFIGURATION GUIDE 1-2010 Configuration Manual page 991

To configure a lockout of protection, forcing the use of the working circuit and locking
out the protect circuit regardless of anything else, include the
the [edit interfaces interface-name sonet-options aps]
[edit interfaces so-fpc/pic/port sonet-options aps]
lockout;
M120 routers and M320 routers with Enhanced III FPCs support Annex B lockout.
The lockout feature is supported as follows:
The selector position will be at what it was before the lockout feature was
configured (no switching of working and protect circuits).
Transmitted K1/K2 will be frozen (same K1 and K2 bytes will be transmitted as
before the lockout).
The APS will ignore requests from the peer to switch working and protect circuits.
For Annex B, must be configured on both local and remote ends, as they
lockout
are not signaled using K1/K2 bytes as in a non Annex B configuration.
To configure Annex B lockout, use the
so-fpc/pic/port sonet-options aps]
interfaces so-x/y/z {
sonet-options {
aps {
annex-b;
lockout;
}
}
}
To display an Annex B lockout configuration, use the
Configuring Revertive Mode
By default, APS is nonrevertive, which means that if the protect circuit becomes
active, traffic is not switched back to the working circuit unless the protect circuit
fails or you manually configure a switch to the working circuit. In revertive mode,
traffic is automatically switched back to the working circuit.
You should configure the ADM and routers consistently with regard to revertive or
nonrevertive mode.
To configure revertive mode, include the
of time to wait after the working circuit has again become functional before making
the working circuit active again:
[edit interfaces so-fpc/pic/port sonet-options aps]
revert-time seconds;
Chapter 61: Configuring SONET/SDH Interfaces
hierarchy level:
lockout statement at the
hierarchy level.
show aps extensive
statement, specifying the amount
revert-time
Configuring SONET/SDH Physical Interface Properties
statement at
lockout
[edit interfaces
command.
921