Ping, Amiga<>PC LAN, dual Ethernet cards, filesharing probs & fixes

[ChaosLord]

Ok I hotswapped the DSL Modem cable out of the PC and plugged it into my A1200T.  Then I pinged the modem.  It works!

This proves that my Amiga+Mediator+PCI Ethernet card all work great!

So the trouble is either:
A: Windows XP is blocking pings and all other communication to/from my Amiga.

B: My brand new crossed ethernet cable has suddenly gone bad.

 :-?

[orange]

have you tried "route print" to check it?
there was a registry hack to enable xp to function as a router, but I'm not sure you would need that..
the problem is probably in gateway, test that..

[uncharted]

I know you said you weren't using it, but check your Windows firewall settings anyway.  I've found that occasionally Windows likes to reconfigure itself.

[ChaosLord]

uncharted wrote:
I know you said you weren't using it, but check your Windows firewall settings anyway.  I've found that occasionally Windows likes to reconfigure itself.

I have checked it many times over the last few days.
It always says it is in the "OFF (Not Recommended)" position.

[ChaosLord]

orange wrote:
have you tried "route print" to check it?
there was a registry hack to enable xp to function as a router, but I'm not sure you would need that..
the problem is probably in gateway, test that..

How do I test my gateway?!?!

I thought it was just some made up IP# that didn't really exist?

I donno what a gateway is.  I have heard it has something to do with cows that go 'moo'.  :-D

[Zac67]

What's the setup, really? You say, you pinged your modem - a DSL modem usually has no IP; sounds more like a router.
Does the modem/router have only one LAN port or more than one? How do you connect Amy, PC and 'Modem'? Is there some Hub/Switch in between?

A crossover cable is only good for connecting exactly two NICs, if you've got more devices you need a hub/switch. The port LEDs must light up when something's hooked up.

Forget about routing for a minute, if the hosts can't ping each other everything else is in vain.

Something like:
Router: 192.168.0.1, mask 255.255.255.0
Amy: 192.168.0.2, mask 255.255.255.0
PC: 192.168.0.3, mask 255.255.255.0
should work.

If you can't ping the PC, ping Amy from Windoze. Look at the ARP table to see if the IP could be resolved to the physical MAC address ('arp -c').

PS: sorry, read your description more carefully now: you're trying to share the Internet connection from the one NIC connected to DSL through the second NIC of your PC?
You'd need to activate ICS then, but it's not very good (=reliable) - get a simple DSL router (~$30). Or get some decent NAT routing software for Windows, I've used Sygate a couple of years ago. There's no way to do what you want without NAT, since you've only got one public IP.

[ChaosLord]

Zac67 wrote:
What's the setup, really? You say, you pinged your modem - a DSL modem usually has no IP; sounds more like a router.

It is a DSL Modem with a router secretly built-in to screw up P2P networks.  So I went in and disabled the routing.  It is now a pure DSL Modem.

Does the modem/router have only one LAN port or more than one?

It has only 1 Ethernet port.

How do you connect Amy, PC and 'Modem'? Is there some Hub/Switch in between?

No hubs and no switches.

The DSL Modem is irrelevant since it is not involved in my Amiga<->PC LAN but since you asked :-)

The current setup is:
DSL Modem connects to PC via an Ethernet cable to a PCI EThernet card in slot 2.

Amiga and PC are connected via a crossed Ethernet cable from the Amiga's PCI Ethernet card to the PC's builtin Ethernet connector.

Its a direct connection so that nothing can go wrong, it can't be hacked and is 100% secure.

A crossover cable is only good for connecting exactly two NICs, if you've got more devices you need a hub/switch. The port LEDs must light up when something's hooked up.

 They do light up perfectly and they connect at the correct speed.

Forget about routing for a minute, if the hosts can't ping each other everything else is in vain.

That is why I don't have a router :-)

Something like:
Router: 192.168.0.1, mask 255.255.255.0
Amy: 192.168.0.2, mask 255.255.255.0
PC: 192.168.0.3, mask 255.255.255.0
should work.

My setup is very similar.  But I have no router.

If you can't ping the PC, ping Amy from Windoze. Look at the ARP table to see if the IP could be resolved to the physical MAC address ('arp -c').

C:\Documents and Settings\James>arp -a 192.168.1.101
No ARP Entries Found

No matter what I do it says "No ARP Entries Found"

[ChaosLord]

I do not want to share the internet connection.

I have no need for that.

I just want my LAN to work.  That is all.

[Zac67]

Hmm,

could be a problem in the NWAY negotiation - manually configuring both sides to exactly the same parameters (e.g. 10 Mbps full duplex) should take care of that. Have you swapped the cable? Little chance, but they do break at times.

Are the connect LEDs lit on both sides? Is there any activity on the opposite side when you try to ping?

[ChaosLord]

Zac67 wrote:
Hmm,

could be a problem in the NWAY negotiation - manually configuring both sides to exactly the same parameters (e.g. 10 Mbps full duplex) should take care of that. Have you swapped the cable? Little chance, but they do break at times.

Not yet, I must buy new ones first.

Are the connect LEDs lit on both sides?

Yes

Is there any activity on the opposite side when you try to ping?

No.  None.

[Tomas]

What ip did you assign to the amiga and the pc network card?

[ChaosLord]

Amiga - 192.168.1.101
PC =    192.168.1.102

Those numbers have worked since around 2000

[AmiGR]

Connecting 3 machines together doesn't require a router. It needs either a switch (or in the worst case hub) or 2 ethernet cards in one machine (on the same subnet).

[AmiGR]

It is a DSL Modem with a router secretly built-in to screw up P2P networks. So I went in and disabled the routing. It is now a pure DSL Modem.

A router is never "secretly built-in to screw up P2P networks", it's there so that you can hook up more than one machine to the internet. You need to configure it, to use P2P networks.

[ChaosLord]

AmiGR wrote:

It is a DSL Modem with a router secretly built-in to screw up P2P networks. So I went in and disabled the routing. It is now a pure DSL Modem.

A router is never "secretly built-in to screw up P2P networks", it's there so that you can hook up more than one machine to the internet. You need to configure it, to use P2P networks.

1. You have obviously never dealt with Verizon.

2. YES it IS secretly a router.
  A. They did not tell me it is a router.
  B. It has only 1 Ethernet connector so it looks just like a normal modem.
  C. Their tech support hung up on me rather than tell me if the modem secretly had a router or not.

3. Absolutely nothing worked on it at first.  Not ftp, not irc /dcc send/get/recv, not p2p games, everything was broken except for viewing the web.  That is because it is a router and was hiding me behind a FAKE IP# so nothing could work!

4. Verizon is owned by some big media corp. (read movie studios) and they hate p2p ppl sharing movies.

5. Their router "accidentally" crashes when using p2p networks!  In other words it analyzes packets and when it thinks you are using p2p filesharing, it just "crashes" and corrupts data.

6. Verizon gives each user a CD and DEMANDS that the user install it.  The CD contains spyware and bogware (crap that bogs your computer down).

7. In an effort to coerce and intimidate the user into installing the CD, the connection won't work unless you install the CD!!  WTF?!  Every other DSL connection I ever had worked instantly by plugging the modem into the phone jack, no software or configuring needed.
I found a troublesome way to work around installing the CD after a few days.  But average people don't know about this!


p.s. None of this message has anything to do with my LAN not working, which is still a mystery. :-?

[Zac67]

ChaosLord wrote:
Amiga - 192.168.1.101
PC =    192.168.1.102

Those numbers have worked since around 2000

Yes, and that's probably why it does not work now. I assume you're using a mask of 255.255.255.0, and all IPs are in the same segment 192.168.1.x, so there's no way for the PC to know which NIC to use, routing wise.
Two NICs in the PC mean two segments which must be differentiated by their network address. Use
192.168.1.101 Amiga
192.168.1.102 PC (Amiga connection)
192.168.2.102 PC (DSL side)
with a mask of 255.255.255.0 (/24) or don't bind an IP to the DSL NIC at all.
Or enlarge the network mask to 255.255.255.240 and use
192.168.1.17 / 192.168.1.18 Amiga - PC
192.168.1.1 / 192.168.1.2 DSL - PC
Binary ANDing the host IPs with the network mask gives you the network address and these MUST be different for the two networks your running, otherwise your routing will be screwed up. Be aware that the host part of the IP (the rest) must not be all 0s or all 1s. Eg. a host IP of 192.168.1.16 with a 255.255.255.240 mask (/28) is not valid since 16 and 240 equals 16 and the rest is 0.

PS: Noone forces you to be a Verizon customer...  ;-)