Added two virtual hosts

#70

I'm still waiting for my hardware to arrive, but in the meantime, I have set up my virtual Cisco C7206VXR so that it routes some incoming X.25 calls to emulated systems that I've set up.? Using , it is now possible to connect to one of those hosts from your local machine using XOT (but the pad command on Ciscos certainly works as well).

$ xotpad -g 23000101

? _____ ? _____ _______ _____ ? ?________ ? __ ?___ ? ___
?| ?__ \ / ____|__ ? __/ ____| ?/ / ?____| /_ |/ _ \ / _ \
?| |__) | (___ ? ?| | | (___ ? / /| |__ ? ? | | | | | | | |
?| ?_ ?/ \___ \ ? | | ?\___ \ / / | ?__| ? ?| | | | | | | |
?| | \ \ ____) | ?| | ?____) / / ?| |____ ? | | |_| | |_| |
?|_| ?\_\_____/ ? |_| |_____/_/ ? |______| ?|_|\___(_)___/

Running on an emulated PDP-11/73

Please use PPN 2,1 to log in as guest!
RSTS V10.0-L 18-Apr-23 05:40 AM
User:

I've tried connecting to the same host from Manta's router, but there seems to be some dramatic packet loss somewhere so it does not work well.? Something to debug.

Cheers,

Hans

#71

On Tue, Apr 18, 2023 at 8:53?AM Hans Hübner <hans.huebner@...> wrote:

I'm still waiting for my hardware to arrive, but in the meantime, I have set up my virtual Cisco C7206VXR so that it routes some incoming X.25 calls to emulated systems that I've set up.? Using , it is now possible to connect to one of those hosts from your local machine using XOT (but the pad command on Ciscos certainly works as well).

$ xotpad -g 23000101

? _____ ? _____ _______ _____ ? ?________ ? __ ?___ ? ___
?| ?__ \ / ____|__ ? __/ ____| ?/ / ?____| /_ |/ _ \ / _ \
?| |__) | (___ ? ?| | | (___ ? / /| |__ ? ? | | | | | | | |
?| ?_ ?/ \___ \ ? | | ?\___ \ / / | ?__| ? ?| | | | | | | |
?| | \ \ ____) | ?| | ?____) / / ?| |____ ? | | |_| | |_| |
?|_| ?\_\_____/ ? |_| |_____/_/ ? |______| ?|_|\___(_)___/

Running on an emulated PDP-11/73

Please use PPN 2,1 to log in as guest!
RSTS V10.0-L 18-Apr-23 05:40 AM
User:

I've tried connecting to the same host from Manta's router, but there seems to be some dramatic packet loss somewhere so it does not work well.? Something to debug.

I've noticed this as well; somehow outbound XOT seems to work perfectly fine but not inbound. Maybe it's related to the weird asymmetric NAT that I do for inbound TCP, or maybe it's ancient IOS being ancient IOS. Going to experiment a bit with xotpad.

[I'm unable to decide on an area code that won't annoy me, so I have like 5 different "x25 alias"es now lol]

--

Mantas Mikul?nas

#72

On Tue, Apr 18, 2023 at 9:15?AM Mantas Mikul?nas <grawity@...> wrote:

On Tue, Apr 18, 2023 at 8:53?AM Hans Hübner <hans.huebner@...> wrote:
I'm still waiting for my hardware to arrive, but in the meantime, I have set up my virtual Cisco C7206VXR so that it routes some incoming X.25 calls to emulated systems that I've set up.? Using , it is now possible to connect to one of those hosts from your local machine using XOT (but the pad command on Ciscos certainly works as well).

$ xotpad -g 23000101

? _____ ? _____ _______ _____ ? ?________ ? __ ?___ ? ___
?| ?__ \ / ____|__ ? __/ ____| ?/ / ?____| /_ |/ _ \ / _ \
?| |__) | (___ ? ?| | | (___ ? / /| |__ ? ? | | | | | | | |
?| ?_ ?/ \___ \ ? | | ?\___ \ / / | ?__| ? ?| | | | | | | |
?| | \ \ ____) | ?| | ?____) / / ?| |____ ? | | |_| | |_| |
?|_| ?\_\_____/ ? |_| |_____/_/ ? |______| ?|_|\___(_)___/

Running on an emulated PDP-11/73

Please use PPN 2,1 to log in as guest!
RSTS V10.0-L 18-Apr-23 05:40 AM
User:

I've tried connecting to the same host from Manta's router, but there seems to be some dramatic packet loss somewhere so it does not work well.? Something to debug.

I've noticed this as well; somehow outbound XOT seems to work perfectly fine but not inbound. Maybe it's related to the weird asymmetric NAT that I do for inbound TCP, or maybe it's ancient IOS being ancient IOS. Going to experiment a bit with xotpad.

I think I figured it out. It was indeed the NAT. (It seems RouterOS fasttrack needs to be bypassed in this specific kind of setup, otherwise the routing-marks only have effect on TCP retransmissions but not on the originals – and I should just have done the NAT the simpler way to begin with, instead of this mess that resulted from me wanting to avoid touching the upstream gateway config...don't ask.)

PAD to ~~147041,~~ uh, ~~603041,~~ er, 471041, (or whatever you have routes for), should work properly now. (And probably to the 042 and 043 that are attached to it via serial.)

What do you use to route the calls to 01/02 to the other systems? I've seen mentions of X.25-to-TCP translation in docs, but it's only in the largest images that don't fit my 1760 so I had to settle with "autocommand telnet".

--

Mantas Mikul?nas

#73

Am Di., 18. Apr. 2023 um 10:11?Uhr schrieb Mantas Mikul?nas <grawity@...>:

What do you use to route the calls to 01/02 to the other systems? I've seen mentions of X.25-to-TCP translation in docs, but it's only in the largest images that don't fit my 1760 so I had to settle with "autocommand telnet".

I've also resorted to "autocommand telnet":

line vty 5 8
?no login
?rotary 1
?autocommand ?telnet 10000 /quiet
line vty 9 12
?no login
?rotary 2

?autocommand ?telnet 192.168.178.7 /quiet

-Hans?

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Added two virtual hosts