2 routers connected together?

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firehawk_1

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Feb 3, 2008
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Hi.

I had a system setup where I had 2 routers:

1) broadband router which also had wireless
2) another wireless router which is better than the broadband router and gave me better wireless in addition to features.

its been a while since I set it up.

now I have temporarily moved due to personal circumstances.

I have a Cisco E4200 router (which is #2 above). I also have a virgin media broadband router which is a netgear I believe. IT is rubbish.

how can I wire them up so the DHCP for internal is given by my wireless router and the virgin media DHCP is switched off?

I would like both wirelesses to work if possible and allow me to choose whichever one I want for it to work.

I will be connecting the cisco wireless router to my netgear powerline adapter and the main computer to the cisco router also.


what would be even better, but probably not possible, is if I can have both routers give out DHCP internally but whichever computer is wired (or wirelessly) to either router, it will give out its DHCP IP address locally but still be able to access the internet without issues.

thank you.
 
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silentplanner

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yes u can reserve ip for your cisco router in broadband modem after reserving ip for your router means for your router will be a static ip according to its mac address u can add that static ip for more features to forward like port triggering virtual servers
 
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silentplanner

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1st get your cisco's mac address than go to broadband modem settings page where u can find ip reserve in LAN section where u can add your desired ip like 192.168.1.2 there u will have to give the mac address of your cisco's router after restarting modem your router will get static ip everytime.
 
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silentplanner

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no because DHCP ip has a lease time after that time ip is changed automatically if you want to forward features u will have to set static u can normally use internet with both sides DHCP enable in which dsl modem will treat your router as normal client with general settings.
 
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firehawk_1

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even if the 2 routers have different IP address ranges and subnets?

I have now, on the internet modem, reserved an IP Address for the MAC Address of router 2.

next... what should I do?
 
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silentplanner

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it is must for connecting two routers that there ip scheme should be different to avoid conflict

now just save and reboot your router and you are done.
 
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firehawk_1

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well i got it to work with both routers giving DHCP but on different subnets/IP ranges.

problem is, my slingmedia player (slingbox) doesnt seem to play internally through the network but seems to make the computers access externally then back into the network.

Router 1 (Cable internet):
IP: 192.168.x.x
DHCP: 192.168.x.x
Subnet: 255.255.255.0


Router 2: (my router)
IP: 10.0.x.x
DHCP: 10.0.x.x
Subnet: 255.255.255.0

router 2 has the reserved IP from router 1 set in the internet ip address (192.168.x.x)

 
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silentplanner

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no i said reserving ip on router 1 because router 1 will forward its features to router 2
 
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bill001g

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You have found the problem and why it is not recommended to run 2 routers in a in home network. What advantage does it have for your cisco router to give out IP at all the handing out of IP addresses is a trivial thing that only happens at system boot if even that much.

The more common method would be to run your cisco as a AP and not a router. If it has the ability to run as a AP follow the instructions in the manual. Otherwise instead of hooking the cisco WAN port back to the main router hook the LAN port back, Disable the DHCP in the cisco and assign it some address withing the main network. The only reason to assign it a address is for management it actually will not use it for anything else. This makes your cisco router a wireless switch in effect.

The only other way to run this is to set your virgin box to bridge mode which makes it run only as a modem. Your cisco router would then be the router but you will only be able to run the wireless from the cisco the virgin box will not run wireless since it is a modem.
 
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firehawk_1

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thanks. I understand what you mean. The reason I am doing it this way, or at least wanted to, was so I can do my networking stuff on the cisco router but still have access to the internet and not needing to mess around with the settings on the virgin media cable modem as that modem is not mine but rather someone I am sharing a place with due to personal circumstances. That's why.

Both are giving out DHCP and the cisco router is set to use a specific IP Address that is reserved on the virgin router. All seems to be working except that I cannot seem to RDP to the computer that is connected to the cisco router externally and the slingplayer is seeming to go out to the internet to get back in to stream the TV

update: regarding RDP, I am using dyndns on the cisco router. the virgin media does not support it and the dyndns IP is updated to use the cisco router reserved IP Address.... not good.
 
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firehawk_1

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so, i gave up somewhat.
I disabled DHCP on the cisco router (router 2) but still left it as static IP (even changing it to DHCP for the configuration) and it seems that the computer connected to it will not receive an IP from the cable/virgin media router. Not sure why. Seems the cisco router isnt being treated as a pass through router.

this means that I still have the issue of the slingplayer software going out to the internet to get back in to stream....

so yes, had to enable DHCP on the cisco router in order to be able to access the internet.
 
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firehawk_1

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ok so I fixed the slingbox issue. needed to manually add an internal IP and connect to it through the software. that works great now.

for the dyndns, i ended up using the client updater which I really didnt want to use. but seems to be working.
 
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