BSCI Exam Cram™ 2 (Exam 642-801)

Connecting Multiple ISPs Using BGP

The generic term, multihomed, is often used to depict a host linked to two or more networks or having two or more network addresses. For instance, a server might be connected to a serial line and a LAN. For the purposes of Cisco routing, generating multiple connections between an autonomous system and two or more ISPs is referred to as multihoming. The technique of multihoming is often used to establish redundant connections between ASs and the Internet to increase the stability and reliability of the connection or to utilize preferable paths to particular destinations with which it often communicates. By generating links with more than one ISP, an organization can ensure that communications with Internet destinations ...