Juniper JUNOS 10.1 - CONFIGURATION GUIDE 1-2010 Configuration Manual page 994

JUNOS 10.1 Network Interfaces Configuration Guide
To configure link state replication, include the
[edit interfaces interface-name sonet-options aps]
both PICs:
APS functionality must be available on the SONET PICs and the interface
configurations must be identical on both ends of the link. Any configuration mismatch
causes the commit operation to fail.
This feature is supported with SONET APS and the following link PICs:
Link state replication supports MLPPP and PPP over Frame Relay (
encapsulation, and fully supports GRES.
Example: Configuring Link PIC Redundancy
Configure link state replication configuration between the ports
c
Configuring APS Load Sharing Between Circuit Pairs
When two routers are connected to a single ADM, you can have them back up each
other on two different pairs of circuits. This arrangement provides load balancing
between the routers if one of the working circuits fails.
Figure 77 on page 926 illustrates load sharing between circuits on two routers. Router
A has a working circuit "Start" and a protect circuit "Up," and Router B has a working
circuit "Up" and a protect circuit "Start." Under normal circumstances, Router A
carries the "Start" circuit traffic and Router B carries the "Up" circuit traffic. If the
924
Configuring SONET/SDH Physical Interface Properties
preserve-interface;
Channelized OC3 IQ and IQE PICs
Channelized OC12 IQ and IQE PICs
Channelized STM1 IQ and IQE PICs
.
oc3-2/0/0
interfaces {
coc3-1/0/0 {
sonet-options {
aps {
preserve-interface;
working-circuit aps-group-1;
}
}
}
coc3-2/0/0 {
sonet-options {
aps {
preserve-interface;
working-circuit aps-group-1;
}
}
}
}
statement at the
preserve-interface
hierarchy level on the interfaces on
frame-relay-ppp
coc3-1/0/0
)
and