[Simh] Running simh vax on amazon EC2

[Mark Pizzolato - Info Comm]

OK.

Consider this:

1)      A standalone vax/vms system won’t usefully need to run DECnet or any cluster stuff.

2)      From what you describe you don’t really need to talk between the simh VAX instance and the host centos system.
Given these, you can configure the VMS environment to ONLY have an IP network stack and avoid DECnet.  This will allow the MAC address of the simulated NIC to retain its default value (as set in the simh configuration file) rather than dynamically changing to a DECnet form MAC address.

You should then be able to set the simh configured MAC address to the same MAC address as the centos system’s network interface you are using.  Given that, you only need to get an additional IP address for use on the simulated system.  I haven’t actually tried this, but it “should” work.


-        Mark

From: Bill Deegan [mailto:bill at baddogconsulting.com]
Sent: Wednesday, July 8, 2015 2:40 PM
To: Mark Pizzolato - Info Comm
Cc: billdeg at buzz1.com; simh at trailing-edge.com
Subject: Re: [Simh] Running simh vax on amazon EC2

Trying to run vax/vms under simh on centos (or RHEL) 6.6
Migrating some applications from a physical vax.
Minimally be able to Telnet into the system from another system.
Maybe ftp in/out.

-Bill

On Wed, Jul 8, 2015 at 4:43 PM, Mark Pizzolato - Info Comm <Mark at infocomm.com<mailto:Mark at infocomm.com>> wrote:
Bill,

What EXACTLY are you trying to do?   What are you trying to do with the VAX/VMS system?


What is the host OS the simh instance is running under?


-        Mark

From: Simh [mailto:simh-bounces at trailing-edge.com<mailto:simh-bounces at trailing-edge.com>] On Behalf Of Bill Deegan
Sent: Wednesday, July 8, 2015 1:38 PM
To: billdeg at buzz1.com<mailto:billdeg at buzz1.com>
Cc: simh at trailing-edge.com<mailto:simh at trailing-edge.com>

Subject: Re: [Simh] Running simh vax on amazon EC2

Yup. Correct IP.
I ran tcpdump on the network and it's not responding to arp addresses from the MAC address that VMS changes to.
-Bill

On Wed, Jul 8, 2015 at 4:07 PM, B Degnan <billdeg at buzz1.com<mailto:billdeg at buzz1.com>> wrote:
Sorry I'd have to mess around with it to find a solution.  Forgetting about
NAT, confirm you have the correct internal IP first.  If you don't use
Amazon a lot it's confusing.  (was to me).
 b



 -------- Original Message --------
> From: "Bill Deegan" <bill at baddogconsulting.com<mailto:bill at baddogconsulting.com>>
> Sent: Wednesday, July 8, 2015 4:03 PM
> To: "Cory Smelosky" <b4 at gewt.net<mailto:b4 at gewt.net>>
> Cc: "simh at trailing-edge.com<mailto:simh at trailing-edge.com>" <simh at trailing-edge.com<mailto:simh at trailing-edge.com>>
> Subject: Re: [Simh] Running simh vax on amazon EC2
>
> Any examples on how to setup vax/vms in simh for NAT?
>
> -Bill
>
> On Sun, Jul 5, 2015 at 7:48 PM, Cory Smelosky <b4 at gewt.net<mailto:b4 at gewt.net>> wrote:
>
> > Can't work around that, limited to NAT, ec2 does Mac filtering
> >
> > Sent from my iPhone
> >
> > > On Jul 5, 2015, at 19:34, Bill Deegan <bill at baddogconsulting.com<mailto:bill at baddogconsulting.com>>
wrote:
> > >
> > > Greetings,
> > >
> > > Has anyone had success (or unresolvable failure) getting a simh VAX
to
> > run on an ec2 machine?
> > >
> > > We're following the bridging instructions but running into an issue
> > where the MAC addresses used by the VAX are not routing into EC2
network...
> > >
> > > Any thoughts/suggestions to get this to work?
> > >
> > > Thanks,
> > > Bill
> > > _______________________________________________
> > > Simh mailing list
> > > Simh at trailing-edge.com<mailto:Simh at trailing-edge.com>
> > > http://mailman.trailing-edge.com/mailman/listinfo/simh
> > _______________________________________________
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> > Simh at trailing-edge.com<mailto:Simh at trailing-edge.com>
> > http://mailman.trailing-edge.com/mailman/listinfo/simh
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