Question : Packet errors

Hello,

    I'm having major network connectivity issues.  I posted an article on ODBC connectivity, but it looks like it is network switch related.  I would like to confirm this.  I will be getting a 5 port switch and put a server, a workstation and the internet connection on it this weekend to trouble shoot to see if it is my switch.  But can anyone tell from these two packet error messge from Ethereal, if it is the switch?

==========================================================

No.     Time        Source                Destination           Protocol Info
    130 7.475530    10.0.0.124            65.54.161.253         TCP      1443 > http [FIN, ACK] Seq=2022 Ack=419 Win=65118 [CHECKSUM INCORRECT] Len=0

Frame 130 (54 bytes on wire, 54 bytes captured)
    Arrival Time: May 27, 2005 10:42:20.843963000
    Time delta from previous packet: 0.000151000 seconds
    Time since reference or first frame: 7.475530000 seconds
    Frame Number: 130
    Packet Length: 54 bytes
    Capture Length: 54 bytes
    Protocols in frame: eth:ip:tcp
Ethernet II, Src: 00:0f:1f:a8:a7:ac, Dst: 00:13:1a:75:5c:88
    Destination: 00:13:1a:75:5c:88 (10.0.0.19)
    Source: 00:0f:1f:a8:a7:ac (10.0.0.124)
    Type: IP (0x0800)
Internet Protocol, Src Addr: 10.0.0.124 (10.0.0.124), Dst Addr: 65.54.161.253 (65.54.161.253)
    Version: 4
    Header length: 20 bytes
    Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
        0000 00.. = Differentiated Services Codepoint: Default (0x00)
        .... ..0. = ECN-Capable Transport (ECT): 0
        .... ...0 = ECN-CE: 0
    Total Length: 40
    Identification: 0x5ccb (23755)
    Flags: 0x04 (Don't Fragment)
        0... = Reserved bit: Not set
        .1.. = Don't fragment: Set
        ..0. = More fragments: Not set
    Fragment offset: 0
    Time to live: 128
    Protocol: TCP (0x06)
    Header checksum: 0xb055 (correct)
    Source: 10.0.0.124 (10.0.0.124)
    Destination: 65.54.161.253 (65.54.161.253)
Transmission Control Protocol, Src Port: 1443 (1443), Dst Port: http (80), Seq: 2022, Ack: 419, Len: 0
    Source port: 1443 (1443)
    Destination port: http (80)
    Sequence number: 2022    (relative sequence number)
    Acknowledgement number: 419    (relative ack number)
    Header length: 20 bytes
    Flags: 0x0011 (FIN, ACK)
        0... .... = Congestion Window Reduced (CWR): Not set
        .0.. .... = ECN-Echo: Not set
        ..0. .... = Urgent: Not set
        ...1 .... = Acknowledgment: Set
        .... 0... = Push: Not set
        .... .0.. = Reset: Not set
        .... ..0. = Syn: Not set
        .... ...1 = Fin: Set
    Window size: 65118
    Checksum: 0xedc9 (incorrect, should be 0xd93c)

==========================================================

No.     Time        Source                Destination           Protocol Info
    141 8.326615    10.0.0.124            10.0.0.1              TCP      1231 > 3389 [ACK] Seq=596 Ack=492 Win=64092 [CHECKSUM INCORRECT] Len=0

Frame 141 (54 bytes on wire, 54 bytes captured)
    Arrival Time: May 27, 2005 10:42:21.695048000
    Time delta from previous packet: 0.139084000 seconds
    Time since reference or first frame: 8.326615000 seconds
    Frame Number: 141
    Packet Length: 54 bytes
    Capture Length: 54 bytes
    Protocols in frame: eth:ip:tcp
Ethernet II, Src: 00:0f:1f:a8:a7:ac, Dst: 00:0c:6e:2a:66:6c
    Destination: 00:0c:6e:2a:66:6c (AsustekC_2a:66:6c)
    Source: 00:0f:1f:a8:a7:ac (10.0.0.124)
    Type: IP (0x0800)
Internet Protocol, Src Addr: 10.0.0.124 (10.0.0.124), Dst Addr: 10.0.0.1 (10.0.0.1)
    Version: 4
    Header length: 20 bytes
    Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
        0000 00.. = Differentiated Services Codepoint: Default (0x00)
        .... ..0. = ECN-Capable Transport (ECT): 0
        .... ...0 = ECN-CE: 0
    Total Length: 40
    Identification: 0x5cd1 (23761)
    Flags: 0x04 (Don't Fragment)
        0... = Reserved bit: Not set
        .1.. = Don't fragment: Set
        ..0. = More fragments: Not set
    Fragment offset: 0
    Time to live: 128
    Protocol: TCP (0x06)
    Header checksum: 0x8982 (correct)
    Source: 10.0.0.124 (10.0.0.124)
    Destination: 10.0.0.1 (10.0.0.1)
Transmission Control Protocol, Src Port: 1231 (1231), Dst Port: 3389 (3389), Seq: 596, Ack: 492, Len: 0
    Source port: 1231 (1231)
    Destination port: 3389 (3389)
    Sequence number: 596    (relative sequence number)
    Acknowledgement number: 492    (relative ack number)
    Header length: 20 bytes
    Flags: 0x0010 (ACK)
        0... .... = Congestion Window Reduced (CWR): Not set
        .0.. .... = ECN-Echo: Not set
        ..0. .... = Urgent: Not set
        ...1 .... = Acknowledgment: Set
        .... 0... = Push: Not set
        .... .0.. = Reset: Not set
        .... ..0. = Syn: Not set
        .... ...0 = Fin: Not set
    Window size: 64092
    Checksum: 0x1497 (incorrect, should be 0x6682)
    SEQ/ACK analysis
        This is an ACK to the segment in frame: 140
        The RTT to ACK the segment was: 0.139084000 seconds
==========================================================


Thanks,
   DAve

Answer : Packet errors

Agreed - error messages seem to indicate - inability to make a connection or reconnect.