- Cisco Network Router User's Manual

E-27
Cisco Intrusion Prevention System Appliance and Module Installation Guide for IPS 7.1
OL-24002-01
Appendix E Troubleshooting
Troubleshooting the Appliance
To verify that the sensor in question does not have an IP address conflict with another host on the
network, follow these steps:
Step 1 Log in to the CLI.
Step 2 Determine whether the interface is up. If the output says the command and control interface link status
is down, there is a hardware issue or an IP address conflict.
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
Link Speed = Auto_1000
Link Duplex = Auto_Full
Total Packets Received = 0
Total Bytes Received = 0
Total Multicast Packets Received = 0
Total Broadcast Packets Received = 0
Total Jumbo Packets Received = 0
Total Undersize Packets Received = 0
Total Receive Errors = 0
Total Receive FIFO Overruns = 0
Total Packets Transmitted = 0
Total Bytes Transmitted = 0
Total Multicast Packets Transmitted = 0
Total Broadcast Packets Transmitted = 0
Total Jumbo Packets Transmitted = 0
Total Undersize Packets Transmitted = 0
Total Transmit Errors = 0
Total Transmit FIFO Overruns = 0
MAC statistics from interface GigabitEthernet0/0
Media Type = TX
Link Status = Up
Link Speed = Auto_100
Link Duplex = Auto_Full
Total Packets Received = 1822323
Total Bytes Received = 131098876
Total Multicast Packets Received = 20
Total Receive Errors = 0
Total Receive FIFO Overruns = 0
Total Packets Transmitted = 219260
Total Bytes Transmitted = 103668610
Total Transmit Errors = 0
Total Transmit FIFO Overruns = 0
sensor#
Step 3 Make sure the sensor cabling is correct.
Step 4 Make sure the IP address is correct.