Brocade Multi-Service IronWare Switching Configuration Guide (Supporting R05.6.00) - Manual (Page 52)

22 Multi-Service IronWare Switching Configuration Guide
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10G WAN PHY fault and performance management
1
The curr15min parameter specifies that you want to display WAN PHY alarm and performance
information for the current 15 minute interval for either the port number port no or slot number slot
no specified.
The day parameter specifies that you want to display WAN PHY alarm and performance information
for the current day for either the port number port no or slot number slot no specified.
The prev15min parameter specifies that you want to display WAN PHY alarm and performance
information for the a past 15 minute interval as specified by the interval variable for either the port
number port no or slot number slot no specified.
Possible values for interval are 1 - 31 and indicates which previous 15 minute interval you want to
display information from. The closest previous interval is 1 and the farthest is 31.
The port no variable specifies the port that you want to display WAN PHY alarm and performance
information for.
The slot no variable specifies the slot that you want to display WAN PHY alarm and performance
information for.
This display shows the following information.
TABLE 5 WAN PHY display parameters
Parameter Description.
Loss of signal (LOS) LOS is raised when the synchronous signal (STS-N) level drops below the
threshold at which a BER of 1 in 103 is predicted. It could be due to a cut cable,
excessive attenuation of the signal, or equipment fault. LOS state clears when
two consecutive framing patterns are received and no new LOS condition is
detected.
Out of frame (OOF) alignment or
SEF (Severely errored Frame) OOF state occurs when four or five consecutive SONET frames are received with
invalid (errored) framing patterns (A1 and A2 bytes). The maximum time to
detect OOF is 625 microseconds. OOF state clears when two consecutive
SONET frames are received with valid framing patterns.
Loss of frame (LOF) alignment LOF state occurs when the OOF state exists for a specified time in milliseconds.
LOF state clears when an in-frame condition exists continuously for a specified
time in milliseconds.
Loss of pointer (LOP) LOP state occurs when N consecutive invalid pointers are received or N
consecutive new data flags (NDFs) are received (other than in a concatenation
indicator), where N = 8, 9, or 10. LOP state clears when three equal valid
pointers or three consecutive AIS indications are received.
LOP can be identified as follows:
•
STS path loss of pointer (SP-LOP)
•
VT path loss of pointer (VP-LOP)