Junos OS Interfaces Command Reference - Juniper Networks

Table 73: T1 or E1 show interfaces Output Fields (continued)
Field Name
DS1 alarms
DS1 defects
T1 media or E1
media
Field Description
E1 media-specific defects that can prevent the interface from passing packets.
When a defect persists for a certain amount of time, 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 turn on the red or yellow alarm LED on the craft interface.
The following lists all possible alarms and defects. For complete explanations
of most of these alarms and defects, see Bellcore Telcordia GR-499-CORE.
• AIS—Alarm indication signal.
• LOF—Loss of frame.
• LOS—Loss of signal.
• YLW—Yellow alarm. Indicates errors at the remote site receiver.
Counts of T1 or E1 media-specific errors.
• 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.
The T1 or E1 media-specific error types are:
• SEF—Severely errored framing
• BEE—Bit error
• AIS—Alarm indication signal
• LOF—Loss of frame
• LOS—Loss of signal
• YELLOW—Errors at the remote site receiver
• CRC Major—Cyclic redundancy check major alarm threshold exceeded
• CRC Minor—Cyclic redundancy check minor alarm threshold exceeded
• BPV—Bipolar violation
• EXZ—Excessive zeros
• LCV—Line code violation
• PCV—Pulse code violation
• CS—Carrier state
• CRC—Cyclic redundancy check
• FEBE—Far-end block error (E1 only)
• LES—Line error seconds
• ES—Errored seconds
• BES—Bit error seconds
Copyright © 2012, Juniper Networks, Inc.
• SES—Severely errored seconds
• SEFS—Severely errored framing seconds
• UAS—Unavailable seconds
Chapter 6: Digital Transmission Interface Operational Mode Commands
Level of Output
detail extensive none
extensive
401