Author Topic: Amiga 2000 PPP Internet Raspberry Pi (Read 4089 times)

3583Bytes · « **on:** April 07, 2014, 04:24:00 AM »

I need some help getting my Amiga 2000 on the internet. Currently I am trying to use a Raspberry Pi to connect to the Amiga via a USB to Serial & Null Modem Cable. I then want to use PPPD to provide internet to the Amiga.

Currently there is no clear tutorial on what settings are required on the Pi so I am trying to hobble together information from several different posts.

This one is on the Raspberry Pi but through serial rather then a USB to serial

http://jmp.no/blog/cheap-overkill-amiga-network-adapter

This video achieved exactly what I want but has no information how to setup the Pi with the exception of that pppd command which won't work (but it has all the Miami settings which is great)

https://www.youtube.com/watch?v=fEonOb5SkEg

So far I got as far making the connection between the Amiga and the Pi. Miami states:

Interface 'ppp0' is now online,

But when I ping or do anything I get a 100% packet loss

The command line I am using on the Pi is:

sudo pppd -detach /dev/ttyUSB0 19200 noauth local passive xonxoff persist 192.168.0.130:192.168.0.131

Where 192.168.0.130 is the address of the Raspberry Pi
Where 192.168.0.131 is a random IP address I selected that is not currently being used on the network.

Any other variation of the pppd command does not seem to work. I get an unable to connect message in Miami.

I enabled ip forwarding (at least I think I did) by

Editing:

/etc/sysctl.conf

Running:

sudo sysctl -p /etc/sysctl.conf

What am I missing

Any help would be apreciated

rewlako · « **Reply #1 on:** April 07, 2014, 08:41:51 AM »

Have you read the comments on the blog? Pretty much explained there.
Also use a dedicated subnet for your rpi/amiga network.

3583Bytes · « **Reply #2 on:** April 07, 2014, 04:07:53 PM »

Quote from: rewlako;762098

Have you read the comments on the blog? Pretty much explained there.
Also use a dedicated subnet for your rpi/amiga network.

I have been at this for 2 days, I think I read every single post & comment related to this that google returned in the first 3 pages. I am ready to say that this may be beoynd me. If someone has done this and is willing to post their setup script I would be very greatfull.

Else a tutorial on how to do this would be great.

rewlako, I did not see anything on any of the posts about a deticated subnet, I am not even sure how to set that up on my router. Do you think this is the issue? Is there any way to test that I am at least hitting the Raspberry Pi and its a network issue?

rewlako · « **Reply #3 on:** April 08, 2014, 08:40:35 AM »

You don't need to configure this on your router.

I just noticed that you chose some odd addresses for the rpi/amiga connection which makes me suspect you are using the same subnet as on your network.

Let's say your network is 192.168.0.x

On the Rpi, use IP 192.168.1.1
On the Amiga, use IP 192.168.1.2 with gateway 192.168.1.1

The Rpi will route traffic from 192.168.1.x to 192.168.0.x.
I have spoken with the author earlier and can ask for his assistance if you still can't make it work

3583Bytes · « **Reply #4 on:** April 08, 2014, 04:15:20 PM »

Quote from: rewlako;762172

You don't need to configure this on your router.

I just noticed that you chose some odd addresses for the rpi/amiga connection which makes me suspect you are using the same subnet as on your network.

Let's say your network is 192.168.0.x

On the Rpi, use IP 192.168.1.1
On the Amiga, use IP 192.168.1.2 with gateway 192.168.1.1

The Rpi will route traffic from 192.168.1.x to 192.168.0.x.
I have spoken with the author earlier and can ask for his assistance if you still can't make it work

Thank you so much for responding.

I will try tonight and let you know if it works,

One question, my raspberry Pi's IP address is 192.168.0.130, should I first force DHCP to give it 192.168.1.130?

Thanks

desiv · « **Reply #5 on:** April 08, 2014, 05:39:14 PM »

I haven't done this in ages, but I would think the Raspberry Pi would need 2 IPs.
It would get an IP from your router that should be in the same subnet that the router is in.

But the Pi should have a different IP/subnet for handing out IPs to devices via the serial (or just talking to them if you are manually assigning the IP on the Amiga).

So, your Pi has a 192.168.0.130 IP address (I am guessing that's a /24 so the whole 192.168.0.x subnet is there..).
Then, you Pi would have another IP in a different subnet, say 192.168.1.1/24.
When the Amiga connects via serial, it gets an address in that network, maybe 192.168.1.10.
The Pi then routes traffic between the 2. So the Amiga's default gateway would be 192.168.1.1.

(Or you could use iptables or ipchains and NAT the Amiga to the other network rather than "route" it...)
This might be pretty old info tho, as I said, it's been ages since I did this..

desiv

rewlako · « **Reply #6 on:** April 09, 2014, 10:05:06 AM »

What desiv said. The Pi will have 2 IPs, one for your Amiga/Rpi network (locally) and one for the network you have the other computers connected to. The Amiga won't be able to tell.

Let me know how it works out

3583Bytes · « **Reply #7 on:** April 10, 2014, 04:27:15 PM »

Quote from: rewlako;762246

What desiv said. The Pi will have 2 IPs, one for your Amiga/Rpi network (locally) and one for the network you have the other computers connected to. The Amiga won't be able to tell.

Let me know how it works out

I don't understand how to give my Pi 2 ip addresses. I mean one IP address is given to the wireless interface by DHCP, I have no idea how to get the router to give it a second IP address to the Pi or even what interface would use it. Or are these just made up number that do not exist on my router but are just used internally within the Pi?

Sorry, networking is not my strength.

desiv · « **Reply #8 on:** April 10, 2014, 11:53:18 PM »

Haven't done this in ages or tested this, but this page seems to be describing what you want, except it's Win95 instead of an Amiga... But the Linux config should be similar (although it's an older config, and not Pi specific.)

http://totalizator.wordpress.com/2012/10/03/connect-windows-95-to-the-internet-using-linux-box-and-rs-232-serial-port-null-modem-cable/

Interesting side note: i just (yesterday) got a Pi and this is on my list of things to do, so I'll probably be trying this out myself before too long.. ;-)

desiv

3583Bytes · « **Reply #9 on:** April 11, 2014, 06:17:45 AM »

Quote from: desiv;762320

Haven't done this in ages or tested this, but this page seems to be describing what you want, except it's Win95 instead of an Amiga... But the Linux config should be similar (although it's an older config, and not Pi specific.)

http://totalizator.wordpress.com/2012/10/03/connect-windows-95-to-the-internet-using-linux-box-and-rs-232-serial-port-null-modem-cable/

Interesting side note: i just (yesterday) got a Pi and this is on my list of things to do, so I'll probably be trying this out myself before too long.. ;-)

desiv

Great tutorial, thanks,

However I am still not sure what the IP addresses represent in that tutorial I still don't get if I should just make up a pair for the PPP process or do they somehow have to tie into my router.

If you ever get this going on the Pi please post a tutorial,

Thanks

rewlako · « **Reply #10 on:** April 11, 2014, 09:42:18 AM »

> have to tie into my router

You don't. The RPi will act as a second router and take care of all that traffic.
I've sent a request to the author of the jmp.no blog to make a step-by-step tutorial.

desiv · « **Reply #11 on:** April 11, 2014, 04:23:05 PM »

Quote from: 3583Bytes;762331

However I am still not sure what the IP addresses represent in that tutorial I still don't get if I should just make up a pair for the PPP process or do they somehow have to tie into my router.

In this tutorial, the IP addresses are just for the linux box to client side.
So in your case, that would be your Pi to Amiga network.
Your Pi will still have it's own IP that it gets from your router..

The only thing you need to make sure is that they are in different subnets.
So, if your router is handing out IPs in the 192.168.0.0/24 range, your PPP config'd range should be 192.168.1.0/24. Changing that 3rd octet makes it a different subnet for a /24 (255.255.255.0) range.

Now that I look at it, I'm not sure all of it is totally applicable.. These lines:
192.168.1.201:192.168.1.200
ms-dns 192.168.1.1

The first one says, I believe, your linux boxes (the Pi) IP for this range will be 192.168.1.201 and your client will get 192.168.1.200

The next line sets the DNS server, but you're going to want that to be the IP of your router most likely, and not 192.168.1.1. That IP, being in the same range as the PPP network, but not being the linux host (that would assume your linux host is doing DNS) is confusing.

Of course, that's pretty old documentation, so it will be interesting to see if anything has changed... ;-)

desiv

3583Bytes · « **Reply #12 on:** April 12, 2014, 02:20:18 AM »

Well this is the command I am running so far:

sudo pppd nodetach /dev/ttyUSB0 19200 noauth local passive ms-dns 192.168.0.1 xonxoff persist 192.168.1.130:192.168.1.131

From the Amiga I can ping 192.168.1.130 which is the PPP ip address I gave the Pi but nothing else. It seems I can ping the pi but not the internet or even my real non PPP network.

desiv · « **Reply #13 on:** April 12, 2014, 02:45:30 AM »

Did you enable routing on the Pi?
From the tutorial:
echo 1 > /proc/sys/net/ipv4/ip_forward

Also, what does your routing table look like after the connection on both machines.
On the pi in the shell, it's "route -n"
On the Amiga, it depends on your stack.. Hopefully you can tell what it is..

desiv

3583Bytes · « **Reply #14 on:** April 12, 2014, 02:57:45 AM »

Yes I did, had to do it differently but when I run

sudo sysctl -p /etc/sysctl.conf

I get

kernel.printk = 3 4 1 3
net.ipv4.ip_forward = 1
vm.swappiness = 1
vm.min_free_kbytes = 8192

Author Topic: Amiga 2000 PPP Internet Raspberry Pi (Read 4089 times)

3583Bytes

Amiga 2000 PPP Internet Raspberry Pi

rewlako

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3583Bytes

Re: Amiga 2000 PPP Internet Raspberry Pi

rewlako

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3583Bytes

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desiv

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Re: Amiga 2000 PPP Internet Raspberry Pi

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Re: Amiga 2000 PPP Internet Raspberry Pi

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Re: Amiga 2000 PPP Internet Raspberry Pi

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