Hi,
It should be impossible to send packet in the two stacks on one logic network interface. But the following scenario meets your capture log, capture packets from two interfaces in the same communication path, (use a Ethernet switch, which support mirror) : start a SIP service from UE to a Internet user. UE must request a PDP context, and there will be a GTP tunnel from UE to NB/RNC, to GSNs. If IPRAN , SIP is carried by SIP/IP/GTP/UDP/IP. GSN extract SIP data, and route to Internet, SIP is carried by SIP/UDP/IP. If Wireshark can both capture RNC--SGSN interface, GGSN -- Internet interface Regards, Bright _____ 发件人: [email protected] [mailto:[email protected]] 代表 tulip neo 发送时间: 2009年6月2日 13:54 收件人: [email protected] 主题: [Wireshark-dev] Regarding Interface Hi List, May be this n't a vallid question but keeps wondering me.over which interface the following is possible.I mean sip over UDP and SIP over GTP.i mean both should be possible at a time. Ethernet->ipv4->udp->SIP Ethernet->ipv4->udp->GTP->ipv4->udp->sip I have attached a small capture to illustrate the problem. Is there any way i can know from capture what interface was used to capture the traffic. Br Tulip _____ Explore and discover exciting holidays and getaways with Yahoo! India Travel Click <http://in.rd.yahoo.com/tagline_Travel_1/*http:/in.travel.yahoo.com/> here! __________ Information from ESET NOD32 Antivirus, version of virus signature database 4117 (20090530) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com
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