need help from Amiga TCPIP guru!

[dirkies]

Ok, here's the deal:

I got myself an Algor+Norway USB+NIC Z2 adaptor, installed OS3.9 and using now GENESIS TCP/IP stack, using a 8192 packet size, 512bytes doesn't alter behaviour). So far so good.

This is a serious Amiga beast: A4000/060 with 146MB ram, SCSI2, PIV and plenty of addon cards (see other thread, reviving my A4K)

PC side is a heavily tuned Windows 2000 SP4 machine with 7 harddisks, UltraSCSI160, 2 RAID subsystems, over 700GB of diskspace and plenty of bells & whistles, using a fast DSL connection.

Both machines are hooked on a 3COM 4 port hub with RJ45 connectors.

Windows2000 has no problem getting on the net as usual (it uses 2 IP addresses, one towards the DSL provider server and one unique internet one), but the Amiga seems a total dumbo, seeing nothing at all.

What did I already try:

Amiga configured as follows: IP address 10.0.0.2
Amiga Explorer configured to see the Amiga at this address.
Genesis configured to open all ports, including 356 used with Amiga Explorer (was mentioned on the Cloanto knowledge base).

The Norway card carrier led is illuminated, and the 3com hub senses the Amiga since it's led on the hub is also illuminated.
GENESIS software says "norway0" (the adaptor) is online (green led)
I can ping the localhost on 127.0.0.1 and also the 10.0.0.2 on the Amiga, so TCPIP is running fine on the Amiga I think.

But the Windows PC cannot see the amiga at all and the amiga cannot see the PC, all ping requests time out

What are the other things I should check so I can at least ping both sides?

Once that is the case the Amiga explorer should be able to connect.
It is running on the Amiga side with the correct IP settings (Aexplorer), it doesn't return any errors, but launching it on the PC side it will return the error it cannot contact 10.0.0.2 (quite obvious since it cannot even ping it)

An IPCONFIG on the PC returns this:

Ethernet adapter Local Area Connection 3: (the DSL provider connection)

Connection-specific DNS Suffix . :
IP Address. . . . . . . . . . . . : 213.135.236.229
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 213.135.236.229

Ethernet adapter Local Area Connection 7: (the unique internet address)

Connection-specific DNS Suffix . :
Autoconfiguration IP Address. . . : 169.254.167.231
Subnet Mask . . . . . . . . . . . : 255.255.0.0
Default Gateway . . . . . . . . . :

Internet sharing connection is off since it will kill my DSL connection and default to an internal 192.168.0.1 address. I did some connection tests but the amiga cannot see the PC either in this case no matter what PC IP address I ping.

[Miggy2TheMax]

first I'll start by saying I'm not an amiga TCP expert, but I think I can see where your problem is. You will need to configure the IP on the amiga side to a subnet that resembles what your PC is talking about something like:
169.254.167.230. Now you should be able to ping your PC on X.X.X.231. Once you are able to do this, then you set up .231 as your default gw on your amiga. You PC will have to do IP forwarding to forward your amiga's requests to the www. I hope this helps a little bit.

[FromWithin]

I wouldn't advise using the 169.254.x.x subnet. It is used when a "proper" IP address can't be assigned. Windows will assign itself one of these addresses if it set to auto-address and cannot connect to a DHCP server.

Are you using DHCP or static IP addresses?

It looks like you are using DHCP and the PC is trying to get an IP address from somewhere.

Is the PC connecting directly to the ADSL line ot do you have a router? Need more info here about how you are setting it up.

Also, this:
IP Address. . . . . . . . . . . . : 213.135.236.229
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 213.135.236.229

Looks wrong because your gateway is the same address as your computers IP address.

[dirkies]

the 3Com hub is connected to the Alcatel ADSL external modem, which is connected to the ISDN line. When connecting using the DSL/PPoE software, it gives me the PPoE IP of 213.135.236.229 (which is variable, the provider does not provide users with a fixed IP unless you pay a premium!) Subet is here 255.255.255.0
The actual NIC inside the PC gets the 169.254.167.231 address (subnet 255.255.0.0).
the DNS of the provider is primary: 194.154.192.101, secondary 194.154.192.102. And yes, DHCP is enabled on on the Windows box.
Router specs (no physical router, the software is making this up)

IPCONFIG with new (changed IP due to logoff/logon) settings:

Ethernet adapter Local Area Connection 3:

Connection-specific DNS Suffix . :
IP Address. . . . . . . . . . . . : 213.135.236.191
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 213.135.236.191

Ethernet adapter Local Area Connection 7:

Connection-specific DNS Suffix . :
Autoconfiguration IP Address. . . : 169.254.167.231
Subnet Mask . . . . . . . . . . . : 255.255.0.0
Default Gateway . . . . . . . . . :

[Jope]

Ok, so you're trying to run the Amiga on the 10.0.0.x network and the PC on some other?

If so, youd need to add a persistent host route to the PC that makes it see the Amiga through the ethernet card.. However, this approach requires a third box that can do the routing, as Windows can't..

So, the easiest way out is, get another network adapter for your PC (they're really cheap), turn on internet connection sharing between your internet card and your intranet card, then select a suitable address for the Amiga (from the 192.168.0.x network) and you should be set.

Another option you might want to try is a virtual network driver for Windows so you can have both boxen on the same physical network, but on different ip networks.

TAP-win32 and Cipe are such adapters, I'll leave the googling to you.

[FromWithin]

The problem is that windows is trying to connect to a DHCP server that doesn't exist.

Your PC is connected to the ISP via the ADSL modem. You connect to the net, it says "Oy, give me an IP address". An IP address is returned by the ISP's server. Everyone's a winner.

Your network card is also set to use DHCP. It has got nothing to connect to. It says "Oy, give me an IP address". But no-one is listening, so it balks and assigns itself a random IP address from the 169.254.x.x subnet as an emergency measure.

If you switch on internet connection sharing for the ADSL connection, it will automatically set the network card to the static IP of 192.168.0.1. This is a good thing. If you then set your Amiga to have the IP address 192.168.0.2 with a gateway and DNS server set to 192.168.0.1 then it should work okay.

[dirkies]

thanks for all suggestions, I'll try it tonight. I still have a 100Mbit PCI card here not being used for anything, but I think I won't need an extra one since I have the hub (it would take another cable!). I will make sure the 169.X.X.X address becomes a fixed one. If it doesn't work I'll use the spare NIC. Thanks again! Fingers crossed, and hopefully my trusted Amiga will sense the outside world for the first time tonight!

[dirkies]

ok, works now! Thanks for all invaluable info.

Only setback is I can't get it to have >250kb/s speed, not much for 10Mbit (700KB/s) connection (?). And my hub does a lot of collisions if the PC is doing a lot of internet traffic at the same time (transfer speed is then about 215KB/s).

I assume this low speed is normal for an Amiga? (maybe 060 or Z2 slot can't do faster?)

[Syko]

presuming you've got both NIC's in the PC connected to the hub, then:
"my hub does a lot of collisions if the PC is doing a lot of internet traffic at the same time" is not too supprising

Try setting the Norway to full duplex (if it's not already), as that should give a good boost, but what ever you do, you'll never see anywhere near 10Mb/s as that's the theoretical maximum... I've not seen any figures for the Norway card, but I'd say you should be able to get around 2Mb/s with no other traffic

[Peanutuk]

Can someone somewhere please write an FAQ regarding TCP transfers for the EAB?