unidirectional
To configure a protect interface for unidirectional mode, use the unidirectional command in APS group
configuration mode. To restore the default setting, bidirectional mode, use the no form of this command.
unidirectional
no unidirectional
Syntax Description
This command has no keywords or arguments.
Command Default
Bidirectional mode is the default mode for the protect interface.
Command Modes
APS group configuration
Command History
ModificationRelease
This command was introduced.Release 3.9.0
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task
IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator
for assistance.
Use the unidirectional command to configure a protect interface for unidirectional mode. Use the no form
of this command to restore the default setting.
The unidirectional or bidirectional automatic protection switching (APS) operation mode of the routers should
be matched with the APS operation mode of the connected SONET equipment.
We recommend using bidirectional APS mode when it is supported by the interconnecting SONET
equipment. When the protect interface is configured as unidirectional, the working and protect interfaces
must cooperate to switch the transmit and receive SONET channel in a bidirectional fashion. Cooperation
occurs automatically when the SONET network equipment is in bidirectional mode.
Note
In a multirouter APS topology, the unidirectional command is allowed only on the protect router.
Task ID
OperationsTask ID
read, writesonet-sdh
Cisco ASR 9000 Series Aggregation Services Router Interface and Hardware Component Command Reference,
Release 5.3.x
930
SONET Controller Commands on the Cisco ASR 9000 Series Router
unidirectional
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