Routing 3 different networks together

aalhait · 04-03-2008, 04:31 PM

I have an issue in my colocation facility.

The ISP gave me 3 networks (all running on the same cable, and coming from the same port on hte router I believe)

Let's say:
66.222.44.18/255.255.255.240 and
64.71.180.30/255.255.255.240 and
72.52.100.64/255.255.255.192

The problems I have are:

I have machines on all 3 of these networks, but they do not see each other!

How do I make them see each other?

Is there something my ISP needs to do on the router config which they have failed to do?

Do I need to setup static routes? if so what do I do?

Note I've had this issue for over a year and I do not know what do to solve this!

Thank you in advance for your help.

johnwill · 04-04-2008, 07:47 AM

Well, you really don't want to attempt to share files with public IP addresses! These addresses don't appear to be coming from the same router, they're totally different addresses with different subnet masks!

Why do you have three ISP connections?

To really solve this, we'd have to know a LOT more about the network specifics, including the exact make/model of all the equipment and exactly how it's all connected.

aalhait · 04-04-2008, 08:39 AM

John,

I did not give the right IPs (Just a close approximation) I do not see why the need to have the correct IPs is required to solve this issue.

aalhait · 04-04-2008, 08:41 AM

I am not running a router in my colocation, just 3 firewalls (one for each network) and they are connected to the same switch which is going to the main drop. ( I take it a Cisco Router port)

johnwill · 04-04-2008, 11:08 AM

Without specific details, it's impossible to diagnose or suggest solutions. Giving mis-information just makes it even harder.

aalhait · 04-04-2008, 12:38 PM

What exact details can I get you? The issue is I do not wish to advertise my IPs of course in a public forum since that would open a whole new can of worms. But what I'm looking for is a solution to the fact that I believe that perhaps the ISP did not cofigure any static routes inside the router to make it realize that these subnets are on the same port. How do you work around such a problem?

renet123 · 04-09-2008, 09:03 AM

it would be my opinion if those are all public IP addresses that you have for each location, it would probably be best if you enabled VPN on your routers, and create 2 vpn connections on each router.. it would probably be the safest way to do it.

aalhait · 04-09-2008, 09:18 AM

They are all public IPs, but I want to create routing on the ISP side or I guess I need a router myself to route between the networks, Anybody know how to do routing on a Netqscreen 5GT firewall so I can use the firewall as a gateway and have static routes between the networks?

04-03-2008, 04:31 PM	#1 (permalink)
aalhait Registered User Join Date: Apr 2008 Posts: 5 OS: Win Vista	Routing 3 different networks together I have an issue in my colocation facility. The ISP gave me 3 networks (all running on the same cable, and coming from the same port on hte router I believe) Let's say: 66.222.44.18/255.255.255.240 and 64.71.180.30/255.255.255.240 and 72.52.100.64/255.255.255.192 The problems I have are: I have machines on all 3 of these networks, but they do not see each other! How do I make them see each other? Is there something my ISP needs to do on the router config which they have failed to do? Do I need to setup static routes? if so what do I do? Note I've had this issue for over a year and I do not know what do to solve this! Thank you in advance for your help.

04-04-2008, 07:47 AM	#2 (permalink)
johnwill Manager, Networking Forums Join Date: Sep 2002 Location: S.E. Pennsylvania, US Posts: 28,681 OS: XP-Pro, Vista, Linux Blog Entries: 1	Re: Routing 3 different networks together Well, you really don't want to attempt to share files with public IP addresses! These addresses don't appear to be coming from the same router, they're totally different addresses with different subnet masks! Why do you have three ISP connections? To really solve this, we'd have to know a LOT more about the network specifics, including the exact make/model of all the equipment and exactly how it's all connected. __________________ If TSF has helped you, Tell us about it! or Donate to help keep the site up! Microsoft MVP - Windows Desktop Experience

04-04-2008, 08:39 AM	#3 (permalink)
aalhait Registered User Join Date: Apr 2008 Posts: 5 OS: Win Vista	Re: Routing 3 different networks together John, I did not give the right IPs (Just a close approximation) I do not see why the need to have the correct IPs is required to solve this issue.

04-04-2008, 08:41 AM	#4 (permalink)
aalhait Registered User Join Date: Apr 2008 Posts: 5 OS: Win Vista	Re: Routing 3 different networks together I am not running a router in my colocation, just 3 firewalls (one for each network) and they are connected to the same switch which is going to the main drop. ( I take it a Cisco Router port)

04-04-2008, 11:08 AM	#5 (permalink)
johnwill Manager, Networking Forums Join Date: Sep 2002 Location: S.E. Pennsylvania, US Posts: 28,681 OS: XP-Pro, Vista, Linux Blog Entries: 1	Re: Routing 3 different networks together Without specific details, it's impossible to diagnose or suggest solutions. Giving mis-information just makes it even harder. __________________ If TSF has helped you, Tell us about it! or Donate to help keep the site up! Microsoft MVP - Windows Desktop Experience

04-04-2008, 12:38 PM	#6 (permalink)
aalhait Registered User Join Date: Apr 2008 Posts: 5 OS: Win Vista	Re: Routing 3 different networks together What exact details can I get you? The issue is I do not wish to advertise my IPs of course in a public forum since that would open a whole new can of worms. But what I'm looking for is a solution to the fact that I believe that perhaps the ISP did not cofigure any static routes inside the router to make it realize that these subnets are on the same port. How do you work around such a problem?

04-09-2008, 09:03 AM	#7 (permalink)
renet123 Registered User Join Date: Apr 2008 Location: Texas Posts: 3 OS: XP SP2	Re: Routing 3 different networks together it would be my opinion if those are all public IP addresses that you have for each location, it would probably be best if you enabled VPN on your routers, and create 2 vpn connections on each router.. it would probably be the safest way to do it.

04-09-2008, 09:18 AM	#8 (permalink)
aalhait Registered User Join Date: Apr 2008 Posts: 5 OS: Win Vista	Re: Routing 3 different networks together They are all public IPs, but I want to create routing on the ISP side or I guess I need a router myself to route between the networks, Anybody know how to do routing on a Netqscreen 5GT firewall so I can use the firewall as a gateway and have static routes between the networks?