Router clustering
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A patented technology of FatPipe Networks, "router clustering" to define bonding of multiple, disparate routers into one device.
[edit] Router Cluster
Two or more routers grouped together to provide any combination of hardware redundancy, service redundancy, load balancing and increased speed. The speed enhancement is accomplished by bonding the routers together. For example, three separate routers such as T1, T3, E1, E3 or wireless can be combined to provide three times the speed, reliability and redundancy. Although failover can be accomplished in routers through software, all of the features mentioned above either require additional hardware within the router or an external router cluster device.
More information is available in U.S. Patent 6,493,341