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9-4 Riverstone Networks RS Switch Router User Guide Release 8.0
Configuring Automatic Protection Switching Packet-over-SONET Configuration Guide
9.3.1 Configuring Working and Protecting Ports
APS on the RS requires configuration of a working port and a corresponding protecting port. You can configure any
number of pairs of PoS ports for APS. The limit is the number of PoS ports on the RS. If one module should go down,
the remaining ports on other modules will remain operational.
Note
The protecting port can be on the same slot or located on a different slot as the
working port, but they must reside on the same RS. You cannot configure APS
operation for working and protecting ports on two different RSs.
The working and protecting port must support identical optical carrier rates. For example, if the working port operates
at OC-12, the protecting port must also be OC-12.
The protecting port must not have been used in an active configuration. After being configured as the protecting port,
it cannot be explicitly configured except for the APS properties. The protecting port automatically inherits the
configuration of the working port.
To configure a working and a protecting PoS port, enter the following command in Configure mode:
To manage the working and protecting PoS interfaces, enter the following commands in Configure mode:
Note
You can only specify one option,
lockoutprot
,
forced
or
manual
, for a port.
Also, an option can be applied to either the working port or the protecting port,
but not both working and protecting ports at the same time.
Configure working and protecting PoS ports.
sonet set
<working-port>
protection 1+1
protected-by <protecting-port>
Prevent a working port from switching to a protecting port.
This command can only be applied to a port configured as a
protecting port.
sonet set
<port>
protection-switch
lockoutprot
Force a switch to the specified port. This command can be
applied to either the working or protecting port.
sonet set
<port>
protection-switch
forced
Manually switch the line to the specified port. This
command can be applied to either the working or protecting
port.
sonet set
<port>
protection-switch
manual
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