JSI Tip 6163. Netstat -s displays a large number of 'Reassembly Required' packets?


If you run the netstat-s command, you may notice a large number of Reassembly Required packets in the IP Statistics section, like:

Packets Received                           = 787790865
Received Header Errors                     = 0
Received Address Errors                    = 1
Datagrams Forwarded                        = 0
Unknown Protocols Received                 = 0
Received Packets Discarded                 = 0
Received Packets Delivered                 = 674586088
Output Requests                            = 596445524
Routing Discards                           = 0
Discarded Output Packets                   = 0
Output Packet No Route                     = 0
Reassembly Required                        = 128345602
Reassembly Successful                      = 6234431
Reassembly Failures                        = 122111171
Datagrams Successfully Fragmented          = 7642664
Datagrams Failing Fragmentation            = 0
Fragments Created                          = 15285321
If you notice this behavior, correct it by implementing the MaximumReassemblyHeaders registry hack at tip 3960 - Excess fragmented TCP/IP packets are silently dropped?



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