Chapter 13. BGP Path Selection
This chapter covers the following topics:
Understanding BGP Path Selection: This section reviews the first step of path selection, which involves selecting the longest prefix length.
BGP Best Path: This section describes the logic used by BGP to identify the best path when multiple routes are installed in the BGP table.
BGP Equal-Cost Multipathing: This section explains how additional paths are presented to the Routing Information Base (RIB) for installation into the routing table.
With Border Gateway Protocol (BGP), route advertisements consist of the Network Layer Reachability Information (NLRI) and the path attributes (PAs). The NLRI consists of the network prefix and prefix length; BGP attributes such as ...
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