I've never actually done it and it's been forever since I've looked into it but I seem to remember being able to tunnel a raw serial connection. The AUX port of one router is connected to the AUX port of another router (for example) and then you just connect your serial devices that way. I could be completely wrong, however. :) -brian On Dec 31, 2011, at 19:30, The Presence <tpresence at hotmail.com> wrote: I don't think cisco supports DDCMP, only HDLC for this...I looked into it. I hope I am wrong though. Kevin Subject: Re: [HECnet] Hecnet and DDCMP From: wonko at 4amlunch.net Date: Sat, 31 Dec 2011 17:44:11 -0500 To: hecnet at Update.UU.SE Johnny, do you still have a copy of the serial version of your bridge program? Alternatively I believe you can tunnel serial over IP with a pair of Cisco routers. -brian On Dec 31, 2011, at 16:30, The Presence <tpresence at hotmail.com> wrote: Nice! Any documentation/software out there that will help me do this? I have been looking around, and have seen some commentary about it, but nothing about how to get it accomplished. Kevin Subject: Re: [HECnet] Hecnet and DDCMP From: wonko at 4amlunch.net Date: Sat, 31 Dec 2011 13:59:00 -0500 To: hecnet at Update.UU.SE Heh, we were just talking about that. That's how the original HECnet worked. :) -brian On Dec 31, 2011, at 12:46, The Presence <tpresence at hotmail.com> wrote: Hey guys, Has anyone worked out a mechanism to connect a node to hecnet using DDCMP? Perhaps some tunneling technology over IP, or virtualized serial? Kevin