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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Ah, but the 2<sup>nd</sup> port doesn’t have an actual MAC address, just a device name based on the mac of the device.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><b>From:</b> cisco-voip <cisco-voip-bounces@puck.nether.net> <b>On Behalf Of </b>Anthony Holloway<br><b>Sent:</b> Tuesday, May 22, 2018 10:55 AM<br><b>To:</b> Ryan Huff <ryanhuff@outlook.com><br><b>Cc:</b> Jon Fox <jonfoxipt@gmail.com>; cisco-voip@puck.nether.net<br><b>Subject:</b> Re: [cisco-voip] ATA190<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal>Aren't the first few values of a MAC tied to the vendor? If so, does this trick make it look like the second port is a different vendor product? And if so, it would be funny if it was a competitor.<o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Ah, but no such luck today.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal><img width=339 height=317 style='width:3.5312in;height:3.302in' id="_x0000_i1025" src="cid:image001.png@01D3F1C0.873CF410"><o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal style='margin-bottom:12.0pt'>Source: <a href="https://macvendors.com/">https://macvendors.com/</a><o:p></o:p></p></div></div><div><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal>On Tue, May 22, 2018 at 4:30 AM, Ryan Huff <<a href="mailto:ryanhuff@outlook.com" target="_blank">ryanhuff@outlook.com</a>> wrote:<o:p></o:p></p><blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in'><p class=MsoNormal style='margin-bottom:12.0pt'>Yes, that is correct. <br><br>The ports are differentiated by the device name. However, the ports themselves are registered to CCM and communicate on the network through a single network interface on the ATA.<br><br>The second port in the ATA will have the first two characters striped from the beginning of the MAC address and a “01” appended at the end of the MAC address (shown in the device name of the two ports).<br><br>Essentially, the ATA is a mini, purpose built media conversion switch. A lot going on under the hood of those silly little things when you think about it :).<br><br>Thanks,<br><br>Ryan<br><br>> On May 22, 2018, at 04:57, Jon Fox <<a href="mailto:jonfoxipt@gmail.com">jonfoxipt@gmail.com</a>> wrote:<br>> <br>> Hello All<br>> <br>> Trying to troubleshoot an issue with a Cisco ATA - CUCM 10.5.2SU3<br>> <br>> I've not had to touch these for some time, so cannot remember if its natural behaviour for Port 1 and Port 2 registering with the same IP address? Is that standard? - Screenshot attached.<br>> <br>> <image.png><br>> <br>> <br>> Many thanks<br>> Jon<br>> _______________________________________________<br>> cisco-voip mailing list<br>> <a href="mailto:cisco-voip@puck.nether.net">cisco-voip@puck.nether.net</a><br>> <a href="https://puck.nether.net/mailman/listinfo/cisco-voip" target="_blank">https://puck.nether.net/mailman/listinfo/cisco-voip</a><br><br>_______________________________________________<br>cisco-voip mailing list<br><a href="mailto:cisco-voip@puck.nether.net">cisco-voip@puck.nether.net</a><br><a href="https://puck.nether.net/mailman/listinfo/cisco-voip" target="_blank">https://puck.nether.net/mailman/listinfo/cisco-voip</a><o:p></o:p></p></blockquote></div><p class=MsoNormal><o:p> </o:p></p></div></div></body></html>