Alcatel-Lucent 7750 SR OS Interface Configuration Manual page 314

Configuration Commands
Description This command specifies the neighbor's IP address only on a multi-chassis APS where the working
and protect circuits are configured on different routers. When the value the neighbor IP address is set
to 0.0.0.0, this implies that the APS group is configured as a single-chassis APS group.
The route to the neighbor must not traverse the multi-chassis APS member (working or protect)
circuits. It is recommended that the neighbor IP address configured is on a shared network between
the routers that own the working and protect circuits.
By default no neighbor address is configured and both the working and protect circuits should be
configured on the same router (i.e., single-chassis APS). APS is assumed to be configured wholly on
a single chassis.
Parameters ip-address — Specifies the neighbor's IP address only on a multi-chassis APS where the working and
protect-circuit
Syntax protect-circuit port-id
no protect-circuit
Context config>port>aps
Description
This command configures a physical port that will act as the protection circuit for this APS group.
The protect circuit port must contain only the default configuration and cannot belong to another APS
group. The protect circuit port must be of the same type as the working circuit for the APS group, for
the port to be added to an APS group port. If that's not the case, the command will return an error.
A protection circuit can only be added if the working circuit already exists; the protection circuit
must be removed from the configuration before the working circuit is removed.
When a port is a protect-circuit of an APS group, the configuration options available in the
config>port port-id>sonet-sdh context is not allowed for that port unless it is part of the noted
exceptions. The exception list includes these SONET/SDH commands:
When is port configured as a protection circuit of an APS group, the configurations described above
and all service configurations related to APS port are operationally inherited by the protect circuit. If
the protect circuit cannot inherit the configurations (due to resource limitations), the configuration
attempt fails and an error is returned to the user.
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protect circuits are configured on different routers. The node should be connected with a direct
interface to ensure optimum fail-over time.
Values
ipv4-address:
ipv6-address:
clock-source
[no] loopback
[no] report-alarm
section-trace
[no] threshold
a.b.c.d
x:x:x:x:x:x:x:x (eight 16-bit pieces)
x:x:x:x:x:x:d.d.d.d
x: [0 — FFFF]H
d: [0 — 255]D
7750 SR OS Interface Configuration Guide