4-34
Configuring E1 and T1 Interfaces
Troubleshooting E1 and T1 WAN Connections
Figure 4-11. Using the show interfaces Command to Troubleshoot Problems
The most common alarms and some possible solutions are listed in Table 4-8.
e1 1/1 is DOWN
Encapsulation is not set
Transmitter is sending remote alarm
Receiver has loss of signal, loss of frame
E1 coding is HDB3, framing is E1
Clock source is internal
No network loopbacks
Last clearing of counters never
loss of frame : 1, current duration 00:00:54
loss of signal : 1, current duration 00:00:53
AIS alarm : 0
Remote alarm : 0
Timeslot Status: 01234567890123456789012345678901
FNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
Status Legend: '-' = Timeslot is unallocated
'N' = Timeslot is dedicated (nailed)
'F' = Timeslot is dedicated for framing
Line Status: -- LOS -- LOF -- Tx LOF --
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
Current Performance Statistics:
10 Errored Seconds, 0 Bursty Errored Seconds
0 Severely Errored Seconds, 56 Severely Errored Frame Seconds
56 Unavailable Seconds, 0 Path Code Violations
1 Line Code Violations, 0 Controlled Slip Seconds
0 Line Errored Seconds, 0 Degraded Minutes
TDM group 1, line protocol is DOWN
Encapsulation PPP (ppp 1)
0 packets input, 0 bytes, 0 no buffer
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame
0 abort, 0 discards, 0 overruns
If the interface is
down, look for
reported alarms
Check configuration
settings: line coding and
framing
To Next Page
Loading...
Need help?
General
