Cisco Network Analysis Module 6000 Installation And Configuration Manual page 60

Troubleshooting the NAM
Symptom
application capture with a large buffer size.
Possible Cause
capture sessions using the NAM Traffic Analyzer application (or the reverse). If you are using more
than one entity to simultaneously request NAM resources, such as the NAM Traffic Analyzer
application, and the external SNMP managers, such as nGenius RTM or Traffic Director, be sure that
you balance the resource allocations.
Recommended Action
expect additional buffers available when interacting with the NAM from another application. Only
enable autostart when it is required. Autostart can consume more resources than just enabling
collections on specific data sources instead of all data sources. Ensure that only the specific capture
buffers and collections required are enabled on the NAM. Use the clear config and reboot commands
from the NAM CLI and then restart the applications for capture sessions that you want with minimum
buffer allocations. The NAM Traffic Analyzer application also shows all collections enabled on the
NAM in the Admin/Diagnostics/Monitor and Capture Configuration screen.
Symptom
Possible Cause
official Cisco patch. The FTP process may have failed, or the FTP image being pointed to is not a
patch (It may be a full application image.)
Recommended Action
requires an accurate time and date on the NAM and only accepts official Cisco patches.
Symptom
unreachable by using the ping command or NAM Traffic Analyzer.
Possible Cause
same subnet. This problem can occur if you change the switch IP address and the NAM VLAN
assignment. The NAM will automatically synchronize its VLAN assignment to the same VLAN in
which the switch (interface sc0) resides. When this occurs, the NAM IP address resides on a different
subnet than the VLAN assigned to the NAM. The router then drops any packet destined to the NAM
IP address. You cannot add a static route to the router because of route overlap caused by improper
VLAN assignments and subnetting.
Recommended Action
same VLAN.
Symptom
Possible Cause
Recommended Action
Catalyst 6000 Family Network Analysis Module Installation and Configuration Note
60
The user is unable to start the Traffic Director capture after using the NAM Traffic Analyzer
All of the buffer space available for capture sessions was requested and allocated for
Do not request the maximum capture buffer size in one application and then
The user receives a verification failed message when installing a patch on the NAM.
The time and date on the NAM are not correct, or the patch is not the same as an
The signature verification used to ensure that the patch is an authentic patch
When a NAM is running in a switch with the Catalyst OS, the NAM may be shown as
The NAM IP address and the IP address of the switch (interface sc0) are not in the
Make sure the NAM IP address and the switch are in the same subnet and in the
Cannot enable the HTTP server.
The NAM could not determine the server's fully qualified domain name.
Reboot the NAM.
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