We used a Cisco MGS in a project to connect a token ring network to the plant ethernet. The only protocol used on both LAN's was DECnet. The MGS box acted as a phase IV circuit router. This was in 1993. IIRC the DECnet implementation was quite new and we encountered a couple of minor problems. So I guess that DECnet is available on anything you have running. Hans -----Original Message----- From: Brian Hechinger <wonko at 4amlunch.net> Sender: owner-hecnet at Update.UU.SE Date: Sat, 28 Apr 2012 21:06:51 To: <hecnet at Update.UU.SE> Reply-To: hecnet at Update.UU.SESubject: Re: [HECnet] GRE tunnel working! On 4/28/2012 2:49 PM, Dave McGuire wrote: On 04/28/2012 02:38 PM, Brian Hechinger wrote: I would be extremely surprised to find that both GRE and DECnet weren't to be found in 11 let alone 12. It's more likely to be a feature set issue. It's definitely a feature set issue. The last time I did anything with GRE (before this anyway) was between a 2501 and an AGS+; the former was running IOS 10 and the latter 11. DECnet support in IOS goes back a good bit before that, which shouldn't be surprising given the history (and reason for existence) of Cisco. I don't think getting GRE support should be an issue, I believe that's included in all versions, you just have to make sure you get the right version for DECnet. Cisco has a feature navigator tool on their website. That can be used to figure it out. I've not tried that yet. That sounds very handy. http://tools.cisco.com/ITDIT/CFN/jsp/index.jsp The CCIE at work pointed me to that. Very helpful. -brian