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Chapter 26: Monitoring Network Connections
Avidia System Configuration and Management User Manual 533
The APS Status window displays the following information.
Information Description
Card
Slot
The description and slot number of the card.
K1 Channel Indicates whether the ATM traffic is being carried on the working channel or
the protection channel. If this box is empty, there is no cable connected to the
port.
K1 Request Indicates what, if any, manual APS request has been issued. Options:
• Lockout Of Protection—APS is disabled.
• Forced Switch—traffic was manually switched to the current channel.
• Signal Failure (SF)—The channel is experiencing a Loss of Signal, Loss
of Frame, or AIS-L error or a line BER of 10
-3
or greater.
• Signal Degrade (SD)—The channel is experiencing signal degradation,
meaning a line BER of 10
-7
or greater.
• Manual Switch—traffic will switch to the working channel if there are no
other conditions (such as the configured Wait Time To Revert) that
prohibit switching to that channel.
• Wait To Restore—The APS is in revertive mode and a timer is preventing
the traffic from switching back to the working channel.
• Do Not Revert—The local APS is in non-revertive mode and it has
switched to the protection channel.
• No Request—No manual APS request has been issued.
K2 Channel Indicates whether the ATM traffic is being carried on the working channel or
the protection channel. If this box is empty, there is no cable connected to the
port.
K2 Architecture The type of APS architecture in use by the system. The Avidia system
currently uses only 1:1 architecture, meaning that the ATM traffic carried on
the working channel is mirrored on the protection channel.
K2 Mode The APS Mode. The Avidia system is unidirectional, meaning that the
switching is complete once traffic switches to the protection channel.
Active Channel The channel that is currently carrying the ATM traffic, either Working
Channel or Protection Channel.
Port Indicates which port is the working channel and which port is the protection
channel.
Signal Degraded Yes indicates that the signal has degraded. No indicates that there is no signal
degradation.
Signal Failure Yes indicates that the signal has failed. No indicates that the signal is active.
Lockout Yes indicates that APS has been disabled. No indicates that APS has not been
disabled.