gerupIntermittent Packet Drops Issues
Intermittent packet drops can occur for various reasons. You need to go through the "High CPU Issues" troubleshooting steps to make sure that you are not encountering any performance issues. Additionally, you might need to check the following to troubleshoot the intermittent packet drops issue:
| 1. | Fragmentation issues By default, fragmented packets cannot traverse the FWSM if you are running a version earlier than FWSM 2.2. You can use the fragment command to configure this feature as described in this link: http://cco/en/US/products/sw/secursw/ps2120/products_command_reference_chapter09186a00801727a8.html#wp1029667 http://www.cisco.com/en/US/products/sw/secursw/ps2120/products_command_reference_chapter09186a00801727a8.html#wp1029667 This behavior differs from that of the PIX firewall. Common protocols that use fragmented packets are Open Shortest Path First (OSPF) and Network File System (NFS). |
| 2. | If you are running IP URL filtering, be sure that the policy defined in the URL server is not denying the packet. |