Juniper ACX2000

Table 144: ATM show interfaces Output Fields (continued)
Level of OutputField DescriptionField Name
extensiveValues of the received and transmitted SONET overhead:
• C2—Signal label. Allocated to identify the construction and content of the
STS-level SPE and for PDI-P.
• F1—Section user channel byte. This byte is set aside for the purposes of users.
• K1 and K2—These bytes are allocated for APS signaling for the protection of
the multiplex section.
• J0—Section trace. This byte is defined for STS-1 number 1 of an STS-N signal.
Used to transmit a 1-byte fixed-length string or a 16-byte message so that a
receiving terminal in a section can verify its continued connection to the
intended transmitter.
• S1—Synchronization status. The S1 byte is located in the first STS-1 of an
STS-N.
• Z3 and Z4—Allocated for future use.
Received SONET
overhead
Transmitted
SONET overhead
All levelsSDH media-specific defects that can prevent the interface from passing packets.
When a defect persists for a certain period, it is promoted to an alarm. Based
on the router configuration, an alarm can ring the red or yellow alarm bell on
the router or light the red or yellow alarm LED on the craft interface. See these
fields for possible alarms and defects: SDH PHY, SDH regenerator section,
SDH multiplex section, and SDH path.
SDH alarms
SDH defects
extensiveActive alarms and defects, plus counts of specific SDH errors with detailed
information.
• Seconds—Number of seconds the defect has been active.
• Count—Number of times that the defect has gone from inactive to active.
• State—State of the error. State other than OK indicates a problem.
Subfields are:
• PLL Lock—Phase-locked loop
• PHY Light—Loss of optical signal
SDH PHY
extensiveActive alarms and defects, plus counts of specific SDH errors with detailed
information.
• Seconds—Number of seconds the defect has been active.
• Count—Number of times that the defect has gone from inactive to active.
• State—State of the error. State other than OK indicates a problem.
Subfields are:
• RS-BIP8—24-bit BIP for multiplex section overhead (B2 bytes)
• OOF—Out of frame
• LOS—Loss of signal
• LOF—Loss of frame
• RS-ES—Errored seconds (near-end regenerator section)
• RS-SES—Severely errored seconds (near-end regenerator section)
• RS-SEFS—Severely errored framing seconds (regenerator section)
SDH regenerator
section
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Chapter 42: Operational Commands