| So from Spoke 1 to spoke 2 it will look like this in transport mode: Whatever Data you are sending : The Original IP Header with the 192 host addresses in it : The GRE Header: The ESP Header: The Outer IP Header with Public IPs in it (From the Tunnel Source Command): The Layer 2 Header. I've attached a screen shot of wireshark with a capture of a ping. You'll notice you cant see the ping of course because its inside the ESP, but you can see everything up to the ESP header. Since tunnel protection is applied to the tunnel interface the next header after that would be the GRE header, followed by the original IP header, followed by the Data. Regards, Brandon Carroll - CCIE #23837 Senior Technical Instructor - IPexpert Mailto: [email protected] Telephone: +1.810.326.1444 Live Assistance, Please visit: www.ipexpert.com/chat eFax: +1.810.454.0130 IPexpert is a premier provider of Self-Study Workbooks, Video on Demand, Audio Tools, Online Hardware Rental and Classroom Training for the Cisco CCIE (R&S, Voice, Security & Service Provider) certification(s) with training locations throughout the United States, Europe, South Asia and Australia. Be sure to visit our online communities at www.ipexpert.com/communities and our public website at www.ipexpert.com Platinum Solutions Group (PSG) provides high-end consulting services with a primary emphasis on Cisco's Data Center Solutions, Service Provider Solutions, Unified Communications and Security-enabled infrastructures. Be sure to visit www.platinumsolutionsgroup.com. On Apr 23, 2010, at 7:45 PM, Dnyaneshwar Gore wrote: Attaching figure..... |
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