14 Mar
2018
14 Mar
'18
11:21 p.m.
You probably just want linux's built-in bridge driver, which you manage
with brctl.
"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.
Use a tap interface to run dynamips on. You can use dynagen to manage your
router instance.
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.
-Mark
On Wed, Mar 14, 2018 at 3:12 PM, Supratim Sanyal <supratim at riseup.net>
wrote:
On 3/14/2018
17:58, Brian Hechinger wrote:
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.
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.
I came across this just now based on the pointers received so far and will
research this: http://brezular.com/2015/09/29/gre-tunnel-between-cisco-
and-linux/
Thanks for the information; keep it coming!
Supratim
On 3/14/2018 17:58, Brian Hechinger wrote:
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.
On Mar 14, 2018 17:11, "Dave McGuire" <mcguire at neurotica.com> wrote:
Ooops, I'm sorry, I missed the word "switch" in the OP's message.
Thank you for the clarification.
-Dave
On 03/14/2018 05:04 PM, Madeline Autumn-Rose wrote:
Dynamips doesn?t emulate Cisco switches; be
aware.
Routers with switch modules and a basic switch implementation exists,
however.
You could in theory also tie to VDR
Sent from my iPhone
On Mar 14, 2018, at 13:25, Brian Hechinger <wonko at 4amlunch.net
<mailto:wonko at 4amlunch.net>> wrote:
> I like to use GNS3 to get everything setup and then switch to dynamips
> after I know what I'm doing.
>
> Been to Long since I ran either though. Need to get a house and get
> moved so I can get the wicked cool networking back up.
>
> On Mar 14, 2018 16:10, "Dave McGuire" <mcguire at neurotica.com
> <mailto:mcguire at neurotica.com>> wrote:
>
> On 03/14/2018 03:05 PM, Supratim Sanyal wrote:
> > Any recommendations on a CISCO switch simulator that runs on
Linux
> > (Ubuntu 17.10) and supports GRE
tunneling to a real CISCO switch
> over
> > the internet?
>
> Dynamips should do it.
>
> -Dave
>
> --
> Dave McGuire, AK4HZ
> New Kensington, PA
>
--
Dave McGuire, AK4HZ
New Kensington, PA