[Simh] VAX SimH network not working

[Vorländer, Martin]

Yep, that’s probably the easiest way to get the TUN/TAP driver.

Von: Shaun McCloud [mailto:shaun.thomas.mccloud at gmail.com]
Gesendet: Donnerstag, 7. Dezember 2017 15:38
An: Vorländer, Martin <MV at pdv-systeme.de>
Cc: simh at trailing-edge.com
Betreff: Re: [Simh] VAX SimH network not working

I'm trying with NAT right now, do to TUN/TAP on Windows do I just install the OpenVPN client and then tell SimH to use that interface?

Shaun McCloud, MCDST

On Thu, Dec 7, 2017 at 8:22 AM, Vorländer, Martin <MV at pdv-systeme.de<mailto:MV at pdv-systeme.de>> wrote:
Shaun,

> If I'm understanding correctly, unless I do TUN/TAP, VDE or SLiRP (NAT) I can't even connect to my emulated VAX via telnet or ftp?

Without all these, you can connect from your laptop to the SimH VAX either through the operator’s console - by having e.g. SET CONSOLE TELNET=12001 in your ini file and telnetting to localhost on port 12001 - or by an emulated serial connection by enabling and configuring the VAX terminal multiplexer DZV11:

SET DZ ENABLED
SET DZ LINES=4
ATTACH -am DZ 12000

The above configures 4 serial lines and listens for (telnet) connections on port 12000.

HTH,
Martin

Von: Simh [mailto:simh-bounces at trailing-edge.com<mailto:simh-bounces at trailing-edge.com>] Im Auftrag von Shaun McCloud
Gesendet: Donnerstag, 7. Dezember 2017 15:04
An: Jordi Guillaumes Pons <jg at jordi.guillaumes.name<mailto:jg at jordi.guillaumes.name>>; simh at trailing-edge.com<mailto:simh at trailing-edge.com>; tony.nicholson at computer.org<mailto:tony.nicholson at computer.org>
Betreff: Re: [Simh] VAX SimH network not working

Tony & Jordi,

Thank you for your help.  When it comes to DECNET, I don't really care about that since right now I have a single VMS emulated system.  I am running the current beta version so I will try it without the microcode.  If I'm understanding correctly, unless I do TUN/TAP, VDE or SLiRP (NAT) I can't even connect to my emulated VAX via telnet or ftp?

Shaun McCloud, MCDST

On Thu, Dec 7, 2017 at 4:39 AM, Jordi Guillaumes Pons <jg at jordi.guillaumes.name<mailto:jg at jordi.guillaumes.name>> wrote:


On 7 Dec 2017, at 05:24, Shaun McCloud <shaun.thomas.mccloud at gmail.com<mailto:shaun.thomas.mccloud at gmail.com>> wrote:

I have OpenVMS VAX 7.3 running in SimH on my Windows laptop, and I am trying to use networking using the WiFi on the laptop.  However, I am getting an IP address of 0.0.0.0/8<http://0.0.0.0/8> in OpenVMS and obviously this is not the IP range I use at home (it is 172.16.6.0/24<http://172.16.6.0/24>).  Below is my current vax.ini so I don't have to type all the commands every time.  Does anyone see anything with it that could cause the problem I'm seeing?

(…)

; Attach Ethernet to a network interface
set xq mac=00:00:01:00:00:01
attach xq eth1
;
; Uncomment the line below to enable auto-boot
dep bdr 0
;

Hello Shaun,

What version of simh are you using? With the current beta version (4.0) you don’t need to load the microcode (it’s builtin in the simulator). I encourage you to try the current development version.

As for your specific problem, the only dubious thing I see in your INI file is the MAC address you are setting. I’d say that is not a valid Ethernet address. The current version can randomly generate a valid MAC address. I’ve attached the relevant HELP information at the end of this message.

Please take into account that with your configuration you will NOT be able to “see" the simulated VAX from your laptop. To be able to establish communication between your host and the guest you should use TUN/TAP, VDE or SLiRP (NAT). In the case you go for SLiRP you will be limited to TCP/IP networking. Anyway, you can’t do DECNET over WiFi, so that’s probably OK with you.


XQ Configuration Set commands Subtopic? mac

MAC
    The MAC address of the controller is the Hardware MAC address which on
    real hardware is uniquely assigned by the factory.  Each LAN device on a
    network must have unique MAC addresses for proper operation.


        sim> SET XQ MAC=<mac-address>


    A Valid MAC address is comprised of 6 pairs of hex digits delimited by
    dashes, colons or period characters.


    The default MAC address for the XQ device is set to a value in the range
    from 08-00-2B-00-00-00 thru 08-00-2B-FF-FF-FF.


    The SET MAC command must be done before the XQ device is attached to a
    network.

    Additional information available:

    Generated_MAC


XQ Configuration Set commands MAC Subtopic? generated

Generated MAC
    Support exists to provide a way to dynamically generate relatively
    unique MAC addresses and to provide a way to save generated addresses
    for subsequent reuse in later simulator invocations.


        sim> SET XQ MAC=AA:BB:CC:DD:EE:FF{/bits}{>filespec}


    where:
        1.  All of the AA:BB:CC:DD:EE:FF values must be hex digits
        2.  bits is the number of bits which are to be taken from the
            supplied MAC aa:bb:cc:dd:ee:ff with legal values from 16
            to 48 and a default of 48 bits.
        3.  filespec specifies a file which contains the MAC address
            to be used and if it doesn't exist an appropriate generated
            address will be stored in this file and a subsequent SET MAC
            invocation specifying the same file will use the value stored
            in the file rather than generating a new MAC.




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