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E-24
Cisco Intrusion Prevention System Appliance and Module Installation Guide for IPS 7.1
OL-24002-01
Appendix E Troubleshooting
Troubleshooting the Appliance
Cannot Access the Sensor CLI Through Telnet or SSH
If you cannot access the sensor CLI through Telnet (if you already have it enabled) or SSH, follow these
steps:
Step 1
Log in to the sensor CLI through a console, terminal, or module session.
Step 2
Make sure that the sensor management interface is enabled. The management interface is the interface
in the list with the status line
Media Type = TX
. If the Link Status is
Down
, go to Step 3. If the Link Status
is
Up
, go to Step 5.
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 = 944333
Total Bytes Received = 83118358
Total Multicast Packets Received = 0
Total Receive Errors = 0
Total Receive FIFO Overruns = 0
Total Packets Transmitted = 397633
Total Bytes Transmitted = 435730956
Total Transmit Errors = 0
Total Transmit FIFO Overruns = 0
sensor#
Step 3
Make sure the sensor IP address is unique. If the management interface detects that another device on
the network has the same IP address, it does not come up.
sensor# setup
--- System Configuration Dialog ---