Now that we have a solid understanding of the different BGP packets, we will look at how and when these packets are exchanged during the establishment and maintenance of the BGP session. Like OSPF and EIGRP, BGP also transitions through several states before a neighbor relationship is established. However, unlike OSPF and EIGRP, BGP does not dynamically discover neighbors. Instead, BGP neighbors must be manually configured, as will be illustrated later in this chapter.
Because BGP is unique in that it uses TCP as the underlying protocol, the process of establishing a neighbor relationship is two-fold: the first phase . . .
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