Setting up network with two ISP's in Business Connectivity

Re: Setting up network with two ISP's

Mon, 30 Nov 2009 15:20:50 EDT

MrFix3 : We eventually will have Optimum Online at the main site as well, just waiting for our Verizon Centrex contract to expire in January. However, we will probably keep our T-1 line (Verizon) for the next year so I can transition everything over the next twelve months.

Re: Setting up network with two ISP's

Thu, 26 Nov 2009 00:44:57 EDT

AWD : question: what's keeping you from using Optimum Online @ both locations?

Re: Setting up network with two ISP's

Thu, 15 Oct 2009 10:59:20 EDT

MrFix3 : Thanks for the detailed info aryoba. I will probably reconfigure the network to match your suggestion, looks like a good way to control traffic.

John

Re: Setting up network with two ISP's

Thu, 15 Oct 2009 09:43:54 EDT

aryoba : LAN Machine interconnectivity

* When you have 192.168.1.0/24 subnet for LAN 1, you could have 192.168.1.1 as default gateway and 192.168.1.2 to 192.168.1.254 for LAN 1 machines
* Similarly, you could have 192.168.2.1 as default gateway and 192.168.2.2 to 192.168.2.254 for LAN 2 machines
* The 192.168.1.1 will be the Router 1 LAN side IP address and the 192.168.2.1 will be the Router 2 LAN side IP address
* DCHP scope for LAN 1 should be assigning IP addresses between 192.168.1.100 and 192.168.1.254 with subnet mask of /24 (or 255.255.255.0) with default gateway of 192.168.1.1
* Similarly, DHCP scope for LAN 2 should be assigning IP addresses between 192.168.2.100 and 192.168.2.254 with subnet mask of /24 (or 255.255.255.0) with default gateway of 192.168.2.1
* You reserve 192.168.1.2-192.168.1.99 for static IP address pool used for LAN 1 machines that need to have static IP address such as servers and printers
* Similarly, you reserve 192.168.2.2-192.168.2.99 for static IP address pool used for LAN 2 machines that need to have static IP address such as servers and printers

Re: Setting up network with two ISP's

Thu, 15 Oct 2009 09:32:55 EDT

aryoba : To reduce unnecessary traffic going across the wireless connection, the following should be considered

* Assign dedicated subnet for main location and for the building across the street
* The main location and the building across the street do not share the same subnet
* Set the wireless connection to be in its own subnet
* On each building (main location and building across the street) there should be a router with multiple routing ports
* The router at main location should have routing in place to direct routes to the Internet over the T1 and to direct routes to the building across the street over the wireless connection
* Similarly, the router at the building across the street should have routing in place to direct routes to the Internet over the Optimum cable Internet and to direct routes to the main location over the wireless connection

Illustration


   Main Location                             Building Across The Street
 
      ISP 1                                           ISP 2 (Optimum)
         |                                               |
         | T1                             Cable Internet |
         |     .1          192.168.0.0/30          .2    |
     Router 1  -------- Wireless connection --------- Router 2
         |                                               |
      LAN 1                                            LAN 2
  192.168.1.0/24                                   192.168.2.0/24

Subnets used
* 192.168.0.0/30: Wireless connection where .1 is the Main Location side and .2 is the side of building across the street
* 192.168.1.0/24: LAN 1, which is the Main Location subnet
* 192.168.2.0/24: LAN 2, which is the subnet of building across the street

Routes on Router 1
* Go through 192.168.0.2/30 (the Router 2) to reach 192.168.2.0/24 (LAN 2)
* Go over T1 as default route to reach the Internet

Routes on Router 2
* Go through 192.168.0.1/30 (the Router 1) to reach 192.168.1.0/24 (LAN 1)
* Go over Optimum Online as default route to reach the Internet

Re: Setting up network with two ISP's

Tue, 13 Oct 2009 22:13:36 EDT

tschmidt : Changing the gateway address should be all you need to do assuming all PCs are on the same subnet.

You also need to disable DHCP server on the Trendnet router.

/tom

Setting up network with two ISP's

Tue, 13 Oct 2009 13:57:23 EDT

MrFix3 : We have an existing T-1 line at our main location and use it for internet access, email and web hosting, and VPN access. We have a building across the street which has three PC's. These PC's are connected to our main store network via a wireless bridge, so they access the internet via the same T-1 as our main location.

We just switched our phone service to Optimum's business package at our remote location, and since internet service is bundled as part of the phone service I wanted to set up the PC's at that location to access the internet via Optimum Online. This would give them faster internet access compared to using the wireless bridge, and reduce the bandwidth on our T-1 line at the main store. The Optimum service is terminated with a modem, and I have a spare router that I can use at our remote store. We already have a DHCP server on our network, and most of our PC's use static IP address (internal IP's using 192.168.1.* range).

Is it possible for me to have the PC's in the remote location use the Optimum connection for internet access? I assume I'd just change the gateway setting on those PC's to point to the router attached to the Optimum modem. I'd tried a few different setups but can't get it to work. The router I'm using is a low end unit (Trendnet TW100) so maybe it doesn't have all the settings and features I'd need? Anyone else have a similar setup?

Thanks!

John