Internet is a necessity for most Indonesian people. People who live in rural areas often face problems or difficulties accessing information via the Internet. Their problems are commonly poor connectivity from Internet Service Providers (ISP), such as network breaks and slowdowns. To solve the problems, it is suggested to build a reliable and fast network. This research discusses the integration of two different ISPs Ethernet Over PDH Based Microwave Radio Links using load balancing technique. The technique is to distribute the load to the network in balance and protect the network from failover. There are several methods to do balancing and failover. In this research, the ECMP (Equal Cost Multiple Path) was used. The test results show that the load balancing router with the ECMP method can combine throughput from two radio link microwaves. The summing throughput of the two links is distributed to the load. The result shows that the total throughput measure at the output load balancing router is 6.8Mbps, which is the summing result of 1.3Mbps and 5.2 Mbps.