Dual Homing to Multiple Service Providers

Another option is to dual (or even triple) home to multiple service provider's networks. Since you aren't relying on a single service provider to connect your network to the Internet, there is less chance of a failure (theoretically). Dual homing presents more complicated problems in the area of controlling the traffic flowing in and out of your network

As with dual homing to a single service provider, you don't necessarily need to peer with the two service providers you are connecting through in order to use both inbound and outbound links. The reasons for running BGP inside your network are generally the same as the reasons for running BGP when you are dual homing to the same provider, given in the ...

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