31.Troubleshooting Global FaultsThis section describes global faults and how to troubleshoot them.Navigation• “Troubleshooting when no white list events are generated” (page 32)• “Troubleshooting an IS that does not generate events” (page 32)• “Troubleshooting an SDM IS that could not be added to a DC” (page32)• “Troubleshooting an IS that does not block traffic” (page 33)• “Validating the failopen function” (page 33)• “Troubleshooting an IS that does not send email” (page 34)• “Troubleshooting a DC that cannot push a policy to a sensor that it ismanaging” (page 34)• “Troubleshooting a faulty OPSEC” (page 34)• “Troubleshooting a failed upgrade” (page 35)• “Troubleshooting a failed automatic SEU Update” (page 35)• “Troubleshooting when a customer is unable to add a sensor to bemanaged by a DC” (page 36)• “Troubleshooting a system crash” (page 37)• “Verify the ports to be opened in the firewall for 4.6” (page 37)• “Troubleshooting Snort” (page 37)• “Troubleshooting memory problems” (page 38)• “IPS mode cable Deployment Scenarios” (page 38)• “Checking IPv6 configurations on the CLI” (page 41)• “Verification of Detection Resources on the CLI” (page 41)• “Viewing the enabled rules on the CLI” (page 41)Nortel TPS 4.7Threat Protection System Troubleshooting GuideNN47240-700 01.01 Standard11 2007Copyright © 2007 Nortel Networks.