Wireshark mailing list archives
Re: Understanding offset values settings icmp
From: asad <a.alii85 () gmail com>
Date: Fri, 28 Aug 2015 14:21:34 +0500
Hi Pascal, Thanks. Also correction its 8 bytes not bits. Thanks for analysis. However, my original query still remains unanswered which was how these offset values are calc in first place. For for 1480 bytes of data the first offset value taking 8-bytes should be 185. If yes why is same not represented in screen-shot shown. Regards, On 8/28/15, Pascal Quantin <pascal.quantin () gmail com> wrote:
2015-08-28 9:35 GMT+02:00 asad <a.alii85 () gmail com>:Sorry, for missing file attachment.Hi Asad, I answered your question in the post you put on ask.wireshark.org : https://ask.wireshark.org/questions/45438/understanding-offset-values-settings-icmp-fragementation Best regards, Pascal.On 8/28/15, asad <a.alii85 () gmail com> wrote:Hello, A certain wireshark sample for icmp fragmentation (attached) is showing following :- -fragment offset:13bits -offset value ordering as :- - 0 - 1480 - 2960 -length 1518. From , theory I know usual 8 bytes of offset field will start calculating offset from 0, then for 1400 bytes of data (minus the headers) next value be 1400/8. If I apply same concept to attached pcap It doesn't add up. Why offset values so different even when considering 1500 bytes of data. Thanks.___________________________________________________________________________ Sent via: Wireshark-users mailing list <wireshark-users () wireshark org> Archives: https://www.wireshark.org/lists/wireshark-users Unsubscribe: https://wireshark.org/mailman/options/wireshark-users mailto:wireshark-users-request () wireshark org ?subject=unsubscribe
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Current thread:
- Understanding offset values settings icmp asad (Aug 28)
- Re: Understanding offset values settings icmp asad (Aug 28)
- Re: Understanding offset values settings icmp Pascal Quantin (Aug 28)
- Re: Understanding offset values settings icmp asad (Aug 28)
- Re: Understanding offset values settings icmp Pascal Quantin (Aug 28)
- Re: Understanding offset values settings icmp Pascal Quantin (Aug 28)
- Re: Understanding offset values settings icmp asad (Aug 28)