This is correct if the router is acting as a router.... but when the router is bridging, this is no longer true.
To answer your question, Ivan, you would simply perform bitswapping on the TR MAC to find the ethernet equivalent. There were a series of posts on this topic (some by me) that specifically lay out this process in both Hex and binary. Do a quick search for messages from the past couple of weeks for the work 'bitswapping' and you'll find them. HTH, Mike W. "C restion" wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > Hi Ivan, > > Mac addresses only have local significance. So for your scenario, host X > sends a packet with it's own MAC address as the source and the router TR > interface as the destination MAC address. The router then rebuilds the > packet and sends it out the ethernet interface with the Ethernet interface > as the source MAc address and host Y as the destination MAC address. > > Hth, > Crestion Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=44889&t=44805 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]