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Two routers: Something a little different
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tcv
New Forum Member
Joined: Aug 29, 2006
Posts: 7
Posted:
Tue Aug 29, 2006 6:03 pm
Post subject: Two routers: Something a little different
[[Warning: A tad long.]]
Hey folks,
I have a
Vonage
router and another router and I am attempting to make them happily coexist. I have read other threads that have suggested a way to do this, but I think my situation is a tad bit different.
Here's what's happening:
1. I have a Watchguard/Fireguard router. This is my main office router (I'll call it the "edge" router.).
2. I have a Motorola VT2442
Vonage
router.
Someone set this up in my network so that my computer was connected directly to the LAN port of the
Vonage
router and then the
Vonage
WAN connected to one of the LAN ports of the edge router.
This worked, but since the
Vonage
router was handing out network numbers in a different 192.168 subnet (192.168.15.x), I was unable to connect to some of my printers which are addressable only via IP and are on the 192.168.1.x subnet which is handled by the edge router.
I called
Vonage
and spoke to "Advanced" technical support who initially said to me that there were only a few options.
We came up with something that I thought would work.
1. Change the WAN IP on the
Vonage
router to 192.168.1.251 and set the default gateway to 192.168.1.1.
2. Turn off DHCP in the
Vonage
router.
3. Leave all cables connected as they are (Laptop to
Vonage
LAN port,
Vonage
WAN port to LAN port in edge router.)
I rebooted the router and everything broke. I could not get an IP from the edge router. I hooked up the cable connected to the WAN port on the
Vonage
router to another LAN port on the
Vonage
router and my computer was now able to get an IP from the edge router, but now
Vonage
is broken.
Vonage
tells that provisioning and connections to
Vonage
will only happen through the WAN port and no where else.
And I've seen suggestions here that say I should connect the
Vonage
router BEFORE my Watchguard, but my Watchguard is a good router and I want it to be my edge router. Ultimately, either everything should be on the same subnet or router between the two subnets should work so that printers in a different subnet can be used.
Is there any way to make this set up work?
Steve48
Vonage Forum
MVM
Joined: Aug 30, 2005
Posts: 4777
Posted:
Tue Aug 29, 2006 7:55 pm
Post subject:
With it set up the way you have it (Vonage LAN port to edge router LAN port) you need to run a cable from another of the
Vonage
LAN ports to the
Vonage
WAN port (!). This should get the phone working, but take a look at
this
thread and also take a look at the writings of Nate Hoy
here.
Then decide for yourself.
_________________
Steve Gray
Orlando, FL
tcv
New Forum Member
Joined: Aug 29, 2006
Posts: 7
Posted:
Tue Aug 29, 2006 8:24 pm
Post subject:
It seems like this might work:
Quote:
- Connect the rest of the router's WAN ports to the LAN ports of the front end router.
- Assign the WAN port of the second tier routers a static address within the LAN subnet of the front end router. The default gateway is the LAN address of the front-end router.
- Then, make sure the second tier router's LAN subnets are different from the front end router's LAN subnet. This is especially important to check if you use two or three of the same router, or router manufacturer, like Linksys. For example, if the front-end router's LAN subnet is 192.168.1.0/24 (255.255.255.0), make the second tier router's LAN subnet's 192.168.2.0/24, 192.168.3.0/24, and so on, depending on how many routers you have.
- Create a static route for each of the second tier LAN subnets on the front end router. Each route would point to the respective WAN ip address of the second tier routers that are serving that subnet (from step two).
- Turn off NAT and the firewall on the second tier routers. It's not needed as the front-end router will serve all those functions.
Yes, it would require that the main computer be on a different subet, but if I read that right, setting up the static route in my edge router would allow the one computer on the different subnet to communicate fine with the printers on the different subnet? Right?
So, I would:
1. Leave the edge router alone. It hands out IP addresses in the 192.168.1.x range.
2. Plug the WAN port of the
Vonage
router into a LAN port on the edge router.
3. Plug the computer into the LAN port of the
Vonage
router.
4. Set the
Vonage
router's WAN address to a static IP on the edge router's subnet with the gateway being the edge router.
5. Allow the
Vonage
router to create its own subnet -- Let's say 192.16.15.x
6. Set a static route in the edge router to address the WAN IP belonging to the
Vonage
router.
Now, how would that allow packets that need to get to 192.168.1.51, for example, to get from 192.168.15.5?
Steve48
Vonage Forum
MVM
Joined: Aug 30, 2005
Posts: 4777
Posted:
Tue Aug 29, 2006 8:49 pm
Post subject:
tcv wrote:
Yes, it would require that the main computer be on a different subet, but if I read that right, setting up the static route in my edge router would allow the one computer on the different subnet to communicate fine with the printers on the different subnet? Right?
That's how I read it.
Quote:
So, I would:
1. Leave the edge router alone. It hands out IP addresses in the 192.168.1.x range.
2. Plug the WAN port of the
Vonage
router into a LAN port on the edge router.
3. Plug the computer into the LAN port of the
Vonage
router.
4. Set the
Vonage
router's WAN address to a static IP on the edge router's subnet with the gateway being the edge router.
5. Allow the
Vonage
router to create its own subnet -- Let's say 192.16.15.x
6. Set a static route in the edge router to address the WAN IP belonging to the
Vonage
router.
Now, how would that allow packets that need to get to 192.168.1.51, for example, to get from 192.168.15.5?
I'll leave it to the networking experts to jump in on that. As you've seen from the bridge thread, that's not me.
_________________
Steve Gray
Orlando, FL
EzCo
Vonage Forum Evangelist
Joined: Jul 21, 2005
Posts: 533
Location: Southeastern PA
Posted:
Tue Aug 29, 2006 9:24 pm
Post subject:
tcv wrote:
It seems like this might work:
Quote:
- Connect the rest of the router's WAN ports to the LAN ports of the front end router.
- Assign the WAN port of the second tier routers a static address within the LAN subnet of the front end router. The default gateway is the LAN address of the front-end router.
- Then, make sure the second tier router's LAN subnets are different from the front end router's LAN subnet. This is especially important to check if you use two or three of the same router, or router manufacturer, like Linksys. For example, if the front-end router's LAN subnet is 192.168.1.0/24 (255.255.255.0), make the second tier router's LAN subnet's 192.168.2.0/24, 192.168.3.0/24, and so on, depending on how many routers you have.
- Create a static route for each of the second tier LAN subnets on the front end router. Each route would point to the respective WAN ip address of the second tier routers that are serving that subnet (from step two).
- Turn off NAT and the firewall on the second tier routers. It's not needed as the front-end router will serve all those functions.
Yes, it would require that the main computer be on a different subet, but if I read that right, setting up the static route in my edge router would allow the one computer on the different subnet to communicate fine with the printers on the different subnet? Right?
So, I would:
1. Leave the edge router alone. It hands out IP addresses in the 192.168.1.x range.
2. Plug the WAN port of the
Vonage
router into a LAN port on the edge router.
3. Plug the computer into the LAN port of the
Vonage
router.
4. Set the
Vonage
router's WAN address to a static IP on the edge router's subnet with the gateway being the edge router.
5. Allow the
Vonage
router to create its own subnet -- Let's say 192.16.15.x
6. Set a static route in the edge router to address the WAN IP belonging to the
Vonage
router.
Now, how would that allow packets that need to get to 192.168.1.51, for example, to get from 192.168.15.5?
Yes, you have it, but don't forget to turn off NAT and any firewall on the
Vonage
router. If I understand your question, how can 192.168.15.5 get to 192.168.1.51? Anything in the 15 subnet will use the
Vonage
router as its default gateway, the
Vonage
router is already part of the 1 subnet (via its WAN port), so it can just arp for anything in that subnet and pass the frames on.
_________________
Comcast 6M/384K -> Cisco 1711 -> RTP300, Juniper 5GT Wireless
"Does anybody remember forests?"
tcv
New Forum Member
Joined: Aug 29, 2006
Posts: 7
Posted:
Wed Aug 30, 2006 5:42 am
Post subject:
EzCo wrote:
Yes, you have it, but don't forget to turn off NAT and any firewall on the
Vonage
router. If I understand your question, how can 192.168.15.5 get to 192.168.1.51? Anything in the 15 subnet will use the
Vonage
router as its default gateway, the
Vonage
router is already part of the 1 subnet (via its WAN port), so it can just arp for anything in that subnet and pass the frames on.
But I couldn't get to that IP and different subnet before. Is that because NAT was on in the
Vonage
router?
EzCo
Vonage Forum Evangelist
Joined: Jul 21, 2005
Posts: 533
Location: Southeastern PA
Posted:
Wed Aug 30, 2006 8:14 am
Post subject:
tcv wrote:
EzCo wrote:
Yes, you have it, but don't forget to turn off NAT and any firewall on the
Vonage
router. If I understand your question, how can 192.168.15.5 get to 192.168.1.51? Anything in the 15 subnet will use the
Vonage
router as its default gateway, the
Vonage
router is already part of the 1 subnet (via its WAN port), so it can just arp for anything in that subnet and pass the frames on.
But I couldn't get to that IP and different subnet before. Is that because NAT was on in the
Vonage
router?
15 should have always been able to establish a connection to 1 if NAT was on the
Vonage
router, but the other way around would have been a problem if you had NAT on without port forwarding. Just try the configuration and see how it works for you.
_________________
Comcast 6M/384K -> Cisco 1711 -> RTP300, Juniper 5GT Wireless
"Does anybody remember forests?"
tcv
New Forum Member
Joined: Aug 29, 2006
Posts: 7
Posted:
Wed Aug 30, 2006 12:33 pm
Post subject:
EzCo wrote:
15 should have always been able to establish a connection to 1 if NAT was on the
Vonage
router, but the other way around would have been a problem if you had NAT on without port forwarding. Just try the configuration and see how it works for you.
Will do. I did leave the firewall on. Perhaps that was the problem.
I will check it out and report back as soon as I can.
Cheers!
Mike...
tcv
New Forum Member
Joined: Aug 29, 2006
Posts: 7
Posted:
Thu Aug 31, 2006 4:42 am
Post subject:
Here's the report.
Yes, as soon as I turned off the firewall, the computer on the different subnet could print to those printers in the edge router's subnet.
The only problem we ran into was that when a computer in the .1 subnet wanted to grab files from the computer in the .15 subnet, the .1 subnet system could not connect to the .15 subnet system.
I presume this is because there is no static route in the edge router to help this along?
If so, I honestly don't know how to set one up.
EzCo
Vonage Forum Evangelist
Joined: Jul 21, 2005
Posts: 533
Location: Southeastern PA
Posted:
Thu Aug 31, 2006 9:14 am
Post subject:
tcv wrote:
Here's the report.
Yes, as soon as I turned off the firewall, the computer on the different subnet could print to those printers in the edge router's subnet.
The only problem we ran into was that when a computer in the .1 subnet wanted to grab files from the computer in the .15 subnet, the .1 subnet system could not connect to the .15 subnet system.
I presume this is because there is no static route in the edge router to help this along?
If so, I honestly don't know how to set one up.
If printing worked, then so should everything else. How about pings? Did you make sure you disabled NAT on the
Vonage
router? Anyway, I just look on Watchguard's website and they give these instructions to configure static routes on their SOHO product (guessing that's what you have):
With your Web browser, go to the SOHO System Status page using the Trusted IP address of the SOHO.
For example, if using the default IP address, go to:
http://192.168.111.1
From the navigation bar on the left side, select Network => Routes.
The Routes page appears.
Type = Network
Address = 192.168.15.0/24
Gateway = <WAN IP address of your
Vonage
router)
_________________
Comcast 6M/384K -> Cisco 1711 -> RTP300, Juniper 5GT Wireless
"Does anybody remember forests?"
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