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Checking the Configuration
DS3 Alarm and Event Detection
This section assumes that you are familiar with DS3 alarms and line states. The 6T3 line card does not
have an LED for alarm and event detection. However, you can enter the show controllers serial
slot/port EXEC command to verify whether the alarm and event detection messages are active or
inactive. Most alarm and event detection messages are short-lived, because if problems occur, the line
card clears the error condition, but records the event to verify line card operation status.
The output from the show controllers serial slot/port EXEC command sends messages about the
following types of alarms and events:
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Cisco 7304 Routers
The output also indicates whether the alarm or event originates from the local end connector or the
remote end connector, as shown in the following example:
Router# show controllers serial 5/0
Interface Serial5/0 (DS3 port 0)
Line state is up
rxLOS inactive, rxLOF inactive, rxAIS inactive
txAIS inactive, rxRAI inactive, txRAI inactive
Current configurable parameter settings:
Loopback is none, Framing is c-bit
Clock source is internal, Cable length is 50
DSU mode is cisco, DSU bandwidth limit is 44210
Payload scrambling is disabled, CRC is 16
Transmitter delay is 0, Encapsulation is HDLC
Idle character is flags, Invert data is disabled
Remote fullrate has no request outstanding
Remote accept is enabled, MTU is 9216
MIB information:
Data in current interval (127 seconds elapsed):
0 Line Code Violations, 0 P-bit Coding Violations
0 C-bit Coding Violations
0 P-bit Err Secs, 0 P-bit Sev Err Secs
0 Sev Err Framing Secs, 8 Unavailable Secs
0 Line Errored Secs, 0 C-bit Errored Secs, 0 C-bit Sev Err Secs
No alarms detected.
Interface 5/0 counters:
Total input packets
Total output packets = 0, bytes = 0, drops = 0
PXF i/f number = 0x1E
PXF Hdr lo = 0x300001E, PXF Hdr hi = 0x30000000
Clear Channel 6-Port T3 (DS3) Line Card Installation and Configuration
4-14
AIS (Alarm Indication Signal)
LOF (Loss of Frame)
LOS (Loss of Signal)
OOF (Out of Frame)
RAI (Remote Alarm Indication)
0 AIS, 1 LOF, 2 RAI, 118 FEBE
Last FEAC code received:AIS
= 0, bytes = 0, drops = 0
Chapter 4
Configuring the 6T3 Line Card
OL-3449-02
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