Alcatel-Lucent 7750 SR OS Interface Configuration Manual page 312

Configuration Commands
APS Commands
aps
Syntax aps
Context config>port
Description This command configures APS (Automatic Protection Switching). APS is used by SONET/SDH add/
drop multiplexers (ADMs) or other SONET/SDH-capable equipment to protect against circuit or
equipment failure.
An APS group contains a working and a protect circuit and can span a single node (SC-APS) or two
nodes (MC-APS).
The working and protection configurations on Alcatel-Lucent 7750 SRs must match the circuit
configurations on the peer. This means that the working circuit on the 7750 SR must be connected to
the peer's working circuit and the protect circuit must be connected to the peer's protection circuit.
The aps command is only available for APS groups and not physical ports.
Default
none
advertise-interval
Syntax advertise-interval advertise-interval
no advertise-interval
Context config>port>aps
Description
This command specifies the time interval, in 100s of milliseconds, between 'I am operational'
messages sent by both protect and working circuits to their neighbor for multi-chassis APS.
The advertise-interval value is valid only for a multi-chassis APS as indicated by the value of the
neighbor command value if it is not set to 0.0.0.0.
Default 10
Parameters
advertise-interval — Specifies the time interval, in 100s of milliseconds, between 'I am operational'
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messages sent by both protect and working circuits to their neighbor for multi-chassis APS.
Values
10 — 650
7750 SR OS Interface Configuration Guide