<div dir="ltr">You probably just want linux's built-in bridge driver, which you manage with brctl.<div>"br0" is the main interface, which you're free to assign a DECnet compatible MAC address to. The other ports in the bridge/switch can be any of real ethernet or tap interfaces.</div><div>Use a tap interface to run dynamips on. You can use dynagen to manage your router instance.</div><div>I've literally been doing this for years. My HECnet router is a dynamips emulated Cisco 720whatever on a tap interface with a GRE tunnel over the Internet to Dave McGuire's area 61. I have my other emulated systems on tap interfaces, all connected to the same virtual bridge/switch on the same linux machine.</div><div><br></div><div>-Mark</div><div><br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Mar 14, 2018 at 3:12 PM, Supratim Sanyal <span dir="ltr"><<a href="mailto:supratim@riseup.net" target="_blank">supratim@riseup.net</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div text="#3333FF" bgcolor="#FFFFFF">
<div dir="auto"><span class="">>On 3/14/2018 17:58, Brian Hechinger wrote:<br>
>He doesn't say he wants to emulate a switch but rather connect
a GRE tunnel to one. He doesn't specify what he wants on the
virtual end but probably a router will do.<br>
<br></span>
Yes, sorry, I should have described what I am trying to achieve.
Basically a few virtual nodes talking DECnet, AppleTalk and
NetBIOS/NetBEUI protocols (no IP), plugged into some virtual
switch or router that can setup a GRE tunnel to a real CISCO
switch on the other end, which also has DECnet and AppleTalk nodes
on it.<br>
<br>
I came across this just now based on the pointers received so far
and will research this:
<a class="m_3764196821807744118moz-txt-link-freetext" href="http://brezular.com/2015/09/29/gre-tunnel-between-cisco-and-linux/" target="_blank">http://brezular.com/2015/09/<wbr>29/gre-tunnel-between-cisco-<wbr>and-linux/</a><br>
<br>
Thanks for the information; keep it coming!<span class="HOEnZb"><font color="#888888"><br>
<br>
Supratim<br>
</font></span></div><div><div class="h5">
<div class="gmail_extra"><br>
</div>
<br>
<div class="m_3764196821807744118moz-cite-prefix">On 3/14/2018 17:58, Brian Hechinger
wrote:<br>
</div>
<blockquote type="cite">
<div dir="auto">He doesn't say he wants to emulate a switch but
rather connect a GRE tunnel to one. He doesn't specify what he
wants on the virtual end but probably a router will do.</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Mar 14, 2018 17:11, "Dave McGuire"
<<a href="mailto:mcguire@neurotica.com" target="_blank">mcguire@neurotica.com</a>> wrote:<br type="attribution">
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><br>
Ooops, I'm sorry, I missed the word "switch" in the OP's
message.<br>
Thank you for the clarification.<br>
<br>
-Dave<br>
<br>
On 03/14/2018 05:04 PM, Madeline Autumn-Rose wrote:<br>
> Dynamips doesn’t emulate Cisco switches; be aware.<br>
><br>
> Routers with switch modules and a basic switch
implementation exists,<br>
> however.<br>
><br>
> You could in theory also tie to VDR<br>
><br>
> Sent from my iPhone<br>
><br>
> On Mar 14, 2018, at 13:25, Brian Hechinger <<a href="mailto:wonko@4amlunch.net" target="_blank">wonko@4amlunch.net</a><br>
> <mailto:<a href="mailto:wonko@4amlunch.net" target="_blank">wonko@4amlunch.net</a>>>
wrote:<br>
><br>
>> I like to use GNS3 to get everything setup and then
switch to dynamips<br>
>> after I know what I'm doing.<br>
>><br>
>> Been to Long since I ran either though. Need to get
a house and get<br>
>> moved so I can get the wicked cool networking back
up.<br>
>><br>
>> On Mar 14, 2018 16:10, "Dave McGuire" <<a href="mailto:mcguire@neurotica.com" target="_blank">mcguire@neurotica.com</a><br>
>> <mailto:<a href="mailto:mcguire@neurotica.com" target="_blank">mcguire@neurotica.com</a>><wbr>>
wrote:<br>
>><br>
>> On 03/14/2018 03:05 PM, Supratim Sanyal wrote:<br>
>> > Any recommendations on a CISCO switch
simulator that runs on Linux<br>
>> > (Ubuntu 17.10) and supports GRE tunneling
to a real CISCO switch<br>
>> over<br>
>> > the internet?<br>
>><br>
>> Dynamips should do it.<br>
>><br>
>> -Dave<br>
>><br>
>> --<br>
>> Dave McGuire, AK4HZ<br>
>> New Kensington, PA<br>
>><br>
<br>
<br>
--<br>
Dave McGuire, AK4HZ<br>
New Kensington, PA<br>
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