EgorBlagov
commented
5 years ago Looks like an issue, I'll address that
ср, 20 февр. 2019 г. в 16:03, MVIStank notifications@github.com:
I am running test pcap. Create profile -> Import Pcap -> Select pcap ( cap2/http_browsing) -> Import I am sniffing traffic in my DUT: 22.0.0.3.80 > 21.0.0.3.36989: Flags [P.], cksum 0x6d93 (correct), seq 1461:2921, ack 250, win 32768, length 1460: HTTP 01:45:14.755614 90:e2:ba:df:23:c0 > a8:f9:4b:ac:43:2a, ethertype IPv4 (0x0800), length 64: (tos 0x0, ttl 128, id 10243, offset 0, flags [none], proto TCP (6), length 40) 21.0.0.3.36989 > 22.0.0.3.80: Flags [.], cksum 0xa9d7 (correct), ack 2921, win 32768, length 0 01:45:14.755625 90:e2:ba:df:23:c0 > a8:f9:4b:ac:43:2a, ethertype IPv4 (0x0800), length 1518: (tos 0x0, ttl 126, id 10252, offset 0, flags [none], proto TCP (6), length 1500) that's ok. If I import pcap and replace src and dsr IP [image: eee] https://user-images.githubusercontent.com/38526613/53078078-fb701700-3525-11e9-97c9-90cf57a44c26.jpeg then I see in my snif: 02:45:52.218656 90:e2:ba:df:23:c0 > a8:f9:4b:ac:43:2a, ethertype IPv4 (0x0800), length 64: (tos 0x0, ttl 128, id 10240, offset 0, flags [none], proto TCP (6), length 44, bad cksum e7c6 (->f4ac)!) 20.20.0.1.36989 > 10.10.0.1.80: Flags [S], cksum 0xcfc5 (incorrect -> 0xdcab), seq 2664033731, win 32768, options [mss 1460], length 0 02:45:52.218780 90:e2:ba:df:23:c0 > a8:f9:4b:ac:43:2a, ethertype IPv4 (0x0800), length 64: (tos 0x0, ttl 126, id 10249, offset 0, flags [none], proto TCP (6), length 44, bad cksum e9bd (->f6a3)!) 10.10.0.1.80 > 20.20.0.1.36989: Flags [S.], cksum 0x9e7b (incorrect -> 0xab61), seq 2664075886, ack 2664033732, win 32768, options [mss 1460], length 0
Did not help option --checksum-disable.. What I'm doing wrong? GUI -4.5.3 Trex - 2.5.3
— You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub https://github.com/cisco-system-traffic-generator/trex-stateless-gui/issues/108, or mute the thread https://github.com/notifications/unsubscribe-auth/Aho7jYh5eOZrxKVUnCkm7xeYYtwnK--Mks5vPQ94gaJpZM4bEuoJ .
-- Egor Blagov https://www.xored.com Software engineer at Xored Software Inc. Mobile: +7 (923) 190 2319 <//+7-923-190-2319> | Skype: i_am_union | Email: egor.blagov@xored.com
MVIStank
zeus10000
I am running test pcap. Create profile -> Import Pcap -> Select pcap ( cap2/http_browsing) -> Import I am sniffing traffic in my DUT: 22.0.0.3.80 > 21.0.0.3.36989: Flags [P.], cksum 0x6d93 (correct), seq 1461:2921, ack 250, win 32768, length 1460: HTTP 01:45:14.755614 90:e2:ba:df:23:c0 > a8:f9:4b:ac:43:2a, ethertype IPv4 (0x0800), length 64: (tos 0x0, ttl 128, id 10243, offset 0, flags [none], proto TCP (6), length 40) 21.0.0.3.36989 > 22.0.0.3.80: Flags [.], cksum 0xa9d7 (correct), ack 2921, win 32768, length 0 01:45:14.755625 90:e2:ba:df:23:c0 > a8:f9:4b:ac:43:2a, ethertype IPv4 (0x0800), length 1518: (tos 0x0, ttl 126, id 10252, offset 0, flags [none], proto TCP (6), length 1500) that's ok. If I import pcap and replace src and dsr IP
then I see in my snif:
02:45:52.218656 90:e2:ba:df:23:c0 > a8:f9:4b:ac:43:2a, ethertype IPv4 (0x0800), length 64: (tos 0x0, ttl 128, id 10240, offset 0, flags [none], proto TCP (6), length 44, bad cksum e7c6 (->f4ac)!)
20.20.0.1.36989 > 10.10.0.1.80: Flags [S], cksum 0xcfc5 (incorrect -> 0xdcab), seq 2664033731, win 32768, options [mss 1460], length 0
02:45:52.218780 90:e2:ba:df:23:c0 > a8:f9:4b:ac:43:2a, ethertype IPv4 (0x0800), length 64: (tos 0x0, ttl 126, id 10249, offset 0, flags [none], proto TCP (6), length 44, bad cksum e9bd (->f6a3)!)
10.10.0.1.80 > 20.20.0.1.36989: Flags [S.], cksum 0x9e7b (incorrect -> 0xab61), seq 2664075886, ack 2664033732, win 32768, options [mss 1460], length 0
Did not help option --checksum-disable.. What am i doing wrong? GUI -4.5.3 Trex - 2.5.3