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Current setup: &nbsp;<br />
Two ISPs, each has their own DSL modem and then that is connected to &nbsp;its individual router. &nbsp;Each router has a couple/three &nbsp;devices connected to it and each forms it small network<br />
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Future requirement:<br />
Just upgraded one of the ISPs to a 10MB connection so we want to cancel the other ISP (save money!!) &nbsp;How do we connect the the system? &nbsp;we need both routers ... The first (TP-LINK r460) one has a fixed IP address (this cannot be changed for the time being and it provided by the new ISP connection) which serves as a link to video systems etc. &nbsp;The other router (Linksys RT-31P2) is a combined router-VOIP/phone device (supplied by the VOIP provider, so it is required also as it is our telephony connection). &nbsp;We also would like to have all the devices networked!!<br />
<br />
How do we configure the setup? &nbsp;we tried with a switch (D-Link DES-1008D) ...but messed up<br />

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Current setup:  
Two ISPs, each has their own DSL modem and then that is connected to  its individual router.  Each router has a couple/three  devices connected to it and each forms it small network

Future requirement:
Just upgraded one of the ISPs to a 10MB connection so we want to cancel the other ISP (save money!!)  How do we connect the the system?  we need both routers ... The first (TP-LINK r460) one has a fixed IP address (this cannot be changed for the time being and it provided by the new ISP connection) which serves as a link to video systems etc.  The other router (Linksys RT-31P2) is a combined router-VOIP/phone device (supplied by the VOIP provider, so it is required also as it is our telephony connection).  We also would like to have all the devices networked!!

How do we configure the setup?  we tried with a switch (D-Link DES-1008D) ...but messed up


Moving from two ISPs to one

Networking hardware includes the physical devices facilitating the use of a computer network. Typically, networking hardware includes gateways, routers, network bridges, modems, wireless access points, networking cables, line drivers, switches, hubs, and repeaters. But it also includes hybrid network devices such as multilayer switches, protocol converters, bridge routers, proxy servers, firewalls, network address translators, multiplexers, network interface controllers, wireless network interface controllers, ISDN terminal adapters and other related hardware.

Networking Hardware-Other

A router is a networking device that forwards data packets between computer networks. Routers perform the "traffic directing" functions on the Internet. The most familiar type of routers are home and small office cable or DSL routers that simply pass data, such as web pages, email, IM, and videos between computers and the Internet. More sophisticated routers, such as enterprise routers, connect large business or ISP networks up to the powerful core routers that forward data at high speed along the optical fiber lines of the Internet backbone. Though routers are typically dedicated hardware devices, use of software-based routers has grown increasingly common.

Routers

A switch is a device that filters and forwards packets of data between LAN segments. Switches operate at the data link layer or the network layer of the Open Systems Interconnection (OSI) Reference Model and therefore support any packet protocol. LANs that use switches to join segments are called switched LANs or, in the case of Ethernet networks, switched Ethernet LANs. A hub is a connection point for devices in a network. Hubs are commonly used to connect segments of a LAN. A hub contains multiple ports; when a packet arrives at one port, it is copied to the other ports so that all segments of the LAN can see all packets.