Juniper JUNOSE 10.0.X PHYSICAL LAYER, Configuration Manual

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Use the no version to remove the protect interface from the APS group.
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See aps protect.
aps revert
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Use to revert to the original working interface when it recovers.
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Specify the number of minutes in the range 5–7, after which the router will
switch to the working interface.
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You can issue this command only for the protect interface, not for the working
interface.
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Example
host1(config-controll)# aps revert 7
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Use the no version to restore the default setting, in which the router does not
revert to the working interface when it recovers.
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See aps revert.
aps unidirectional
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Use to specify that the router should switch to the protect interface using the
unidirectional mode switching mechanism.
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You can issue this command only for the protect interface, not for the working
interface.
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Example
host1(config-controller)# aps unidirectional
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Use the no version to restore the default setting, bidirectional mode.
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See aps unidirectional.
Configuring SONET/SDH Alarms
To configure the bit error rates that determine signal degradation and signal failure
on the working interface:
1.
Select the protect interface.
host1(config)# controller sonet 4/1
2.
Specify the bit error rate at which the router should generate an alarm indicating
signal degradation.
host1(config-controller)# threshold sd-ber 6
3.
Specify the bit error rate at which the router should generate an alarm indicating
signal failure and switch from the working interface to the protect interface.
host1(config-controller)# threshold sf-ber 5
Configuration Tasks
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Chapter 3: Configuring Unchannelized OCx/STMx Interfaces