Protection
Use the Protection subtab to provision protection for the GE_XP, 10GE_XP, GE_XPE, and 10GE_XPE cards. The following table describes the Protection subtab page fields and buttons.
Note
To provision protection, the card mode must be L2 over DWDM. You can set the card mode on the Card subtab.
 
Item
Description
Port
Displays the card port number. The GE_XP is a double-slot card with twenty GE client ports (displayed as ONE_GE) and two 10GE trunk ports (displayed as TEN_GE).
Status
Sets the Spanning Tree Protocol (STP) port states. If you have designated the card as a master, you must set one of the trunk ports to the blocked state to avoid loops in the network.
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Blocking —Sets the port in the blocked (standby) state. A port in the blocking state does not participate in frame forwarding.
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Forwarding—Sets the port to the forwarding state. A port in the forwarding state forwards frames.
Actual Status
Displays the current STP port states.
Clear/Supress CRC Alarm
If checked clears DATA-CRC alarm
Master
Sets the card as the master card for the network. Only one card in the network should be set as a master card.
Protection
Sets the protection:
 •
Enabled—Enables protection.
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Disabled—Disables protection
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Forced—Forces the protection.
Hold Off Time
If enabled, the LOS will be activated in FAPS state machine only after the hold off time.
Refresh
Retrieves the current protection status.
Switch With CRC Alarm
If checked, enables switch with CRC alarm is raised
CRC Threshold
Configures CRC error rate as a percentage of the traffic. The following error rates are available:
 •
10e-2 pr 1% of traffic(1 CRC error in 100 packets)
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10e-3 pr .1% of traffic(1 CRC error in 1000 packets)
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10e-4 pr .01% of traffic(1 CRC error in 10000 packets)
CRC Soak Count
Indicates the state machine soak before declaring excess CRC error. If the threshold is crossed by CRC error count in N consecutive intervals, excessive CRC error is declared. The values of N is from 3 to 10. Default value is 10.
CRC Poll Interval
Configures the detection module in state machine managed by timer in alarm agent with frequency of 60 seconds. The value ranges from 10 to 60 sec, default value is 60.
Apply
Applies changes made to the protection.
Reset
Cancels any changes to the protection and returns it to its last-saved settings.
Help
Displays context-sensitive help.

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