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Will this work?


Hi,

Instead if trying to explain it, I created a diagram that best illistrates it.

See http://www.stanlyn.com/conflict/conflict.htm

Notice that the T1 router is in bridge mode passing all 16 ips thru it.  The diagram shows only 2 of the ips used which is on the WAN side of the 2 D-link routers.  Their output ends up at the same switch, and all components share the sam 192.168.0 network.  All internal netmasks are 255.255.255.0

Is there anything wrong with this because from the outside I am able to ping both D-link routers, however one of the routers is not forwarding its traffic to the netcard that is listening for it.  I know that the card is listening because I can enter the local IP from another local machine and it works fine.  Both routers are also pingable from the outside and inside...

Thanks,
Stanley

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stanlyn
Asked:
stanlyn
2 Solutions
 
lrmooreCommented:
Problem is that your server can only have one default gateway, and it points to which D-Link?
What exactly are you trying to accomplish? It's not a simple problem to provide multiple paths to one server using commodity consumer gear and Windows.
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Danny_LaroucheCommented:
The computer is not responding because this router is not its default gateway. I don't see why you need 2 DI604. If you need a redundant architecture, use 2 corporate class router in cluster.
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jabiiiCommented:
I would get rid of the Hub and 1 dlink, and it would work beautifly.
having 2 dlinks should work yes, but you would have to change the default gateway anytime one of them droppe.d
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stanlynAuthor Commented:
The reason is...

The T1 and its associated Netopia router is passing 16 external IPs thru to the local network via bridge mode.  These ips range from x.x.178.99 thru x.x.178.116 with the Netopia router being x.x.178.99.

One of the servers has a single nic card that has 192.168.0.18, 19, and 20 bound to it.  This server has two web sites with one going to 0.18, and the other goes to 0.19, while 0.20 goes to a mail server.

The D-link router can only be assigned a single external ip, so we assign it external 178.100 where I nat anything that comes in on it to internal 0.18, and likewise to the others.

I did not expect a problem, because every device has a unique non-duplicated ip address on the same network, both internal and external, but there is.

Any ideas, other that throwing $1000+ to a different router?  I currently have 4-5 of these D-Link routers and a couple Netgear ones FVS318 and FVR328 which could be used.

Thanks
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lrmooreCommented:
Swap out the Netopia and both D-Links for most any Cisco T1 router, or even a low-cost Adtran 3200.
One other option would be a $250 Linksys RV041/ $165 RV042 which will allow multiple static nat mappings where you can do it with just one router.
Another option would be to swap both D-links for a Cisco PIX501
Your Netgears only support many-one nat, and you need 1-1 nat.
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The--CaptainCommented:
>The T1 and its associated Netopia router is passing 16 external IPs thru to the local network via bridge mode.  These ips
>range from x.x.178.99 thru x.x.178.116 with the Netopia router being x.x.178.99.

I don't know why you keep saying the router is in "bridge mode" if your local clients still need to use it's assigned IP as their respective gateway.  If your (b)router is in bridge mode, then your local clients should be configured with a gateway IP that does not reside on your router...  Just because your router has the same IP for it's internal and external interfaces does not mean it's "bridging" your traffic (I am well aware of the practice of assigning the same IP to the internal and external interfaces of Netopia devices - I still think it's retarded).

I think you are confusing basic routing with actual bridging.

I will admit that my definition of bridges is a bit hazy, as I don't tend to engage in debates about bridging equipment very often, so I may likely be opening myself to a spanking by those with more knowledge pertaining to the relevant RFCs...

In any case, go with lrmoore's advice.

Cheers,
-Jon
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jabiiiCommented:
Bridges & switches are a layer2 device, the perform no layer3 routing.

Another solution would be get ride of the routers all together, and assign the real IP's to the servers......
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