Communication Problems; Cannot Access The Sensor Cli Through Telnet Or Ssh - Cisco IPS 7.1 Installation Manual

Appendix E Troubleshooting
When you receive the errors that the Analysis Engine is busy, wait a while before trying to make
configuration changes. Use the show statistics virtual-sensor command to find out when the Analysis
Engine is available again.

Communication Problems

This section helps you troubleshoot communication problems with the sensor. It contains the following
topics:
•
•
•

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:
Log in to the sensor CLI through a console, terminal, or module session.
Step 1
Make sure that the sensor management interface is enabled. The management interface is the interface
Step 2
in the list with the status line
is
Up
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
OL-24002-01
Cannot Access the Sensor CLI Through Telnet or SSH, page E-25
Correcting a Misconfigured Access List, page E-27
Duplicate IP Address Shuts Interface Down, page E-28
Media Type = TX
, go to Step 5.
Cisco Intrusion Prevention System Appliance and Module Installation Guide for IPS 7.1
. If the Link Status is , go to Step 3. If the Link Status
Down
Troubleshooting the Appliance
E-25