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Simple routing problem - Page 4

post #31 of 59
Quote:
Originally Posted by tomaskir View Post
Go and re-read all my posts in this threat. I think everyone except you understands what im trying to do...
not a single post gives a valid explanation for needing more than a single router. you want everyone to be able to talk to eachother and that is easiest on a single router. draw a flow chart of what you want and it will be a lot easier to help you but as of now your network plan is overthought and overly complex
    
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post #32 of 59
Thread Starter 
Quote:
Originally Posted by OutOfBalanceOX View Post
not a single post gives a valid explanation for needing more than a single router. you want everyone to be able to talk to eachother and that is easiest on a single router. draw a flow chart of what you want and it will be a lot easier to help you but as of now your network plan is overthought and overly complex
How can I use 1 router when I have 2 routers, each with a separate internet connnection, each with a separate WAN internet IP?

Post #12
This layout is needed because some hosts on the network would use the 192.168.1.1 as a gateway and others 10.15.168.1 as a gateway. This way each gateway can have its own DHCP server set up and depending on where I plug in on the network i get the correct IPs.

Post #13
Router A is in a separate apartment as Router C.

Router B is inbetween. I cant use one router, as one apartment needs to access its internet through its router and the other through the its own router as well. But i still want to be able to communicate between apartments.

See previous post for more why

Seems to me like my setup is the easies way to achieve this, with both apartments having their own DHCPs and being in separate subnets, but through the router inbetween trafic between apartments would still be possible. Broadcasts need to be filtered out obviously, so the DHCPs dont overlap. If I set the static routing tables as in the 1st post, this should achieve it, but Im still not sure if the Router B will be able to do what I want it to do.
Edited by tomaskir - 2/14/11 at 9:43am
post #33 of 59
It looks like he has 2 separate LANs and wants to connect the 2 without routing out to the WAN. 1 of 3 things is needed.
1 layer 2 switch inbetween the 2 routers. Total needed 1 layer 2 switch, 2 straight-through cables. Or 1 cross-over cable connecting the 2 routers (depending on the router type, professional grade routers X-over a must).
static routes on each router
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post #34 of 59
Thread Starter 
Quote:
Originally Posted by bratas View Post
It looks like he has 2 separate LANs and wants to connect the 2 without routing out to the WAN. 1 of 3 things is needed.
1 layer 2 switch inbetween the 2 routers. Total needed 1 layer 2 switch, 2 straight-through cables. Or 1 cross-over cable connecting the 2 routers (depending on the router type, professional grade routers X-over a must).
static routes on each router
If I connect the 2 routers to each other directly, that would make it one network again, and therefore one broadcast domain again, and DHCPs would conflict etc.

Whatever is inbetween the networks needs to have 2 interfaces. An L2 switch is still a switch, therefore it would unite the networks again to my understanding.
post #35 of 59
Quote:
Originally Posted by tomaskir View Post
If I connect the 2 routers to each other directly, that would make it one network again, and therefore one broadcast domain again, and DHCPs would conflict etc.

Whatever is inbetween the networks needs to have 2 interfaces. An L2 switch is still a switch, therefore it would unite the networks again to my understanding.
actually assuming you can set a static route, and use a crossover cable it will be 2 seperate networks
    
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post #36 of 59
Thread Starter 
Quote:
Originally Posted by OutOfBalanceOX View Post
actually assuming you can set a static route, and use a crossover cable it will be 2 seperate networks
Im 99% sure directly connecting both routers would make it a single network and a single broadcast domain, regardles of static routes.

Why a cross-over cable anyway? Both routers have Auto MDI/MDX. Or is there another reason?
Edited by tomaskir - 2/14/11 at 9:57am
post #37 of 59
Quote:
Originally Posted by tomaskir View Post
Why a cross-over cable? Both routers have Auto MDI/MDX. Or is there another reason?
its just good practice
    
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post #38 of 59
Thread Starter 
Quote:
Originally Posted by OutOfBalanceOX View Post
its just good practice
Its just useless when routers and switches for for 20$ have auto MDI/MDX these days...

Also, reedited the post above...
post #39 of 59
ah using 2 home networking routers it will yes, because you can't assign specific functions to only certain interfaces. If these were small business class routers you would have DHCP services point out 1 interface and can assign an IP address to a specific interface for routing. If you can only assign 2 IP's then you need to the use of 3 routers.
Example
Router A, default route to 176.0.0.0
Router A internal 192.168.1.1
Router C, default route to 87.0.0.0
Router C internal 10.1.1.1
Router B default router to 192.168.1.2
Router B internal 10.1.1.2

The better way would be
Router A interface 0/1 176.0.0.0
Router A int 0/2 192.168.1.1
Router A int 0/3 10.1.2.1 (X-over)
Router C int 0/1 87.0.0.0
Router C int 0/2 10.1.1.1
Router C int 0/3 10.1.2.2 (X-over)
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post #40 of 59
Quote:
Originally Posted by tomaskir View Post
Im 99% sure directly connecting both routers would make it a single network and a single broadcast domain, regardles of static routes.

Why a cross-over cable anyway? Both routers have Auto MDI/MDX. Or is there another reason?
it will be 4 broadcast domains. Routers replaced bridges, and break up broadcast domains. Each subnet would be it's own broadcast domain.
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