Microsoft Windows NIC Troubleshooting

Try these 2 commands to get NIC statistics:

C:\>netsh interface ipv4 show ipstats
MIB-II IP Statistics
------------------------------------------------------
Forwarding is:                      Disabled
Default TTL:                        128
In Receives:                        15716737
In Header Errors:                   0
In Address Errors:                  102
Datagrams Forwarded:                0
In Unknown Protocol:                0
In Discarded:                       729112
In Delivered:                       22206901
Out Requests:                       18839775
Routing Discards:                   0
Out Discards:                       115338
Out No Routes:                      0
Reassembly Timeout:                 60
Reassembly Required:                0
Reassembled Ok:                     0
Reassembly Failures:                0
Fragments Ok:                       0
Fragments Failed:                   0
Fragments Created:                  0
C:\>netsh interface ipv4 show tcpstats

TCP Statistics
------------------------------------------------------
Timeout Algorithm:                      Van Jacobson's Algorithm
Minimum Timeout:                        5
Maximum Timeout:                        4294967295
Maximum Connections:                    Dynamic
Active Opens:                           2838224
Passive Opens:                          444654
Attempts Failed:                        1796068
Established Resets:                     50571
Currently Established:                  34
In Segments:                            28077891
Out Segments:                           25341202
Retransmitted Segments:                 3592358
In Errors:                              0
Out Resets:                             5496409
Fastopen Active Opens:                  0
Fastopen Passive Opens:                 0
Fastopen Attempts Failed:               0
Retransmits Of First SYN:               1790632
Retransmits Of First SYN (Fastopen):    0

If there is number bigger then 0 in “In Header Errors“, “Fragments Failed“, “In Errors” there is problem with wire.

More Stories
HPE & Citrix XenServer