ndt-users list created

[Richard Carlson <>]

Hi Peter;

Us the "More Details" button and let me know what the variables
        RcvWinScale
        SndWinScale
        WinScaleRcvd
        WinScaleSent

report?

Rich

At 07:56 PM 8/24/2006, Peter Van Epp wrote:
>         Lixin is just reinstalling the old version to check but we think
> window scaling reporting is broken. Both the server and the client have
> window scaling enabled and indeed tcp seems to be negotiating it correctly
> but the ndt server reports window scaling off. We ran in to problems trying
> to go back to our old version on this machine, but the old version on the
> test machine reports (correctly as far as we can see) that window scaling is
> on.
>
>
> ---- Data Link Control   (DLC) ----
> Destination:    0014F6909DA1   [No Vendor Name. - 909DA1]   [0014F6909DA1]
> Source: 0001F4069842   [No Vendor Name. - 069842]   [0001F4069842]
> EtherType:      0x8100   (IEEE 802.1Q - Virtual LAN)
>
> ---- IEEE 802.1Q - Virtual Bridged Local Area Networks   (IEEE 802.1Q) ----
> Priority/CFI/VID:       0x020B
> :          000. .... .... ....   Priority Level: 0
> :          ...0 .... .... ....   Canonical Format
> :          .... 0010 0000 1011   VLan Identifier: 523
> EtherType:      0x0800   (Internet Protocol (IP))
>
> ---- Internet Protocol   (IP) ----
> Version/Header Length:  0x45
> :          0100 ....   Version 4
> :          .... 0101   20 bytes - Header Length
> Type of Service:        0x00
> :          000. ....   Routine
> :          ...0 ....   Normal Delay
> :          .... 0...   Normal Throughput
> :          .... .0..   Normal Reliability
> :          .... ..0.   Normal Monetary Cost
> :          .... ...0   Not Used
> Total Length:   48 bytes
> Identification: 0
> Flags/Fragment Offset:  0x4000
> :          0... .... .... ....   Not Used
> :          .1.. .... .... ....   Don't Fragment
> :          ..0. .... .... ....   Last Fragment
> :          ...0 0000 0000 0000   Fragment Offset: 0 bytes
> Time to Live:   62 seconds/hops
> Protocol ID:    6   (TCP)
> CheckSum:       0x5615   (Correct)
> Source Address: 142.58.200.253
> Destination Address:    142.58.1.65
> :       [28 bytes of data]
>
> ---- Transmission Control Protocol   (TCP) ----
> Source Port:    7123
> Destination Port:       2822
> Sequence Number:        1123305805    (next expected sequence number: 
> 1123305806)
> Acknowledgement Number: 2721899098
> Header Length:  0x70
> :          0111 ....   28 bytes - Header Length
> :          .... 0000   Not Used
> Flags:  0x12
> :          00.. ....   Not Used
> :          ..0. ....   No URG
> :          ...1 ....   Acknowledgement
> :          .... 0...   No PSH
> :          .... .0..   No RST
> :          .... ..1.   Synchronize
> :          .... ...0   No FIN
> Window Size:    5840
> CheckSum:       0x4ED2   (Correct)
> Urgent Pointer: 0
> Options Present:
> Kind:   2   (Maximum Segment Size)
> Length: 4 bytes
> Maximum Segment Size:   1460
> Kind:   1   (No Operation)
> Kind:   3   (Window Scale Factor)
> Length: 3 bytes
>  Shift Count:   8
>
> ---- Data/FCS ----
> Data/Padding:   [0 bytes]
> Frame Check Sequence:   0x25867E5F (Correct)
>
>
>
>
> ---- Data Link Control   (DLC) ----
> Destination:    0001F4069842   [No Vendor Name. - 069842]   [0001F4069842]
> Source: 0014F6909DA1   [No Vendor Name. - 909DA1]   [0014F6909DA1]
> EtherType:      0x8100   (IEEE 802.1Q - Virtual LAN)
>
> ---- IEEE 802.1Q - Virtual Bridged Local Area Networks   (IEEE 802.1Q) ----
> Priority/CFI/VID:       0x820B
> :          100. .... .... ....   Priority Level: 4
> :          ...0 .... .... ....   Canonical Format
> :          .... 0010 0000 1011   VLan Identifier: 523
> EtherType:      0x0800   (Internet Protocol (IP))
>
> ---- Internet Protocol   (IP) ----
> Version/Header Length:  0x45
> :          0100 ....   Version 4
> :          .... 0101   20 bytes - Header Length
> Type of Service:        0x00
> :          000. ....   Routine
> :          ...0 ....   Normal Delay
> :          .... 0...   Normal Throughput
> :          .... .0..   Normal Reliability
> :          .... ..0.   Normal Monetary Cost
> :          .... ...0   Not Used
> Total Length:   60 bytes
> Identification: 56985
> Flags/Fragment Offset:  0x4000
> :          0... .... .... ....   Not Used
> :          .1.. .... .... ....   Don't Fragment
> :          ..0. .... .... ....   Last Fragment
> :          ...0 0000 0000 0000   Fragment Offset: 0 bytes
> Time to Live:   63 seconds/hops
> Protocol ID:    6   (TCP)
> CheckSum:       0x766F   (Correct)
> Source Address: 142.58.1.65
> Destination Address:    142.58.200.253
> :       [40 bytes of data]
>
> ---- Transmission Control Protocol   (TCP) ----
> Source Port:    2822
> Destination Port:       7123
> Sequence Number:        2721899097    (next expected sequence number: 
> 2721899098)
> Acknowledgement Number: 0
> Header Length:  0xA0
> :          1010 ....   40 bytes - Header Length
> :          .... 0000   Not Used
> Flags:  0x02
> :          00.. ....   Not Used
> :          ..0. ....   No URG
> :          ...0 ....   No ACK
> :          .... 0...   No PSH
> :          .... .0..   No RST
> :          .... ..1.   Synchronize
> :          .... ...0   No FIN
> Window Size:    5840
> CheckSum:       0x6252   (Correct)
> Urgent Pointer: 0
> Options Present:
> Kind:   2   (Maximum Segment Size)
> Length: 4 bytes
> Maximum Segment Size:   1460
> Kind:   4   (TCP Selective Ack Permitted)
> Length: 2 bytes
> Kind:   8   (Timestamp)
> Length: 10 bytes
>  Timestamp Value:       15552
>  Timestamp Echo Reply:  0
> Kind:   1   (No Operation)
> Kind:   3   (Window Scale Factor)
> Length: 3 bytes
>  Shift Count:   2
>
> ---- Data/FCS ----
> Data/Padding:   [0 bytes]
> Frame Check Sequence:   0xEA2AD350 (Correct)
>
>
> Peter Van Epp / Operations and Technical Support
> Simon Fraser University, Burnaby, B.C. Canada

------------------------------------



Richard A. Carlson                              e-mail: 

Network Engineer                                phone:  (734) 352-7043
Internet2                                       fax:    (734) 913-4255
1000 Oakbrook Dr; Suite 300
Ann Arbor,  MI  48104