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C-106
Cisco Intrusion Prevention System CLI Sensor Configuration Guide for IPS 7.1
OL-19892-01
Appendix C Troubleshooting
Gathering Information
The number of syslog messages received = 0
The number of <evError> events written to the event store by severity
Fatal Severity = 0
Error Severity = 0
Warning Severity = 0
TOTAL = 0
The number of log messages written to the message log by severity
Fatal Severity = 0
Error Severity = 0
Warning Severity = 0
Timing Severity = 0
Debug Severity = 0
Unknown Severity = 0
TOTAL = 0
sensor#
Interfaces Information
The show interfaces command is useful for gathering information on the sensing and command and
control interfaces. This section describes the show interfaces command, and contains the following
topics:
• Understanding the show interfaces Command, page C-106
• Interfaces Command Output, page C-106
Understanding the show interfaces Command
You can learn the following information from the show interfaces command:
• Whether the interface is up or down
• Whether or not packets are being seen, and on which interfaces
• Whether or not packets are being dropped by SensorApp
• Whether or not there are errors being reported by the interfaces that can result in packet drops
The show interfaces command displays statistics for all system interfaces. Or you can use the individual
commands to display statistics for the command and control interface (show interfaces
command_control_interface_name), the sensing interface (show interfaces interface_name).
Interfaces Command Output
The following example shows the output from the show interfaces command:
sensor# show interfaces
Interface Statistics
Total Packets Received = 0
Total Bytes Received = 0
Missed Packet Percentage = 0
Current Bypass Mode = Auto_off
MAC statistics from interface GigabitEthernet0/1
Media Type = backplane
Missed Packet Percentage = 0
Inline Mode = Unpaired
Pair Status = N/A
Link Status = Up