BGP uses BGP Path Attributes to determine the Best Path to a destination. According to BGP Best Path Algorithm, BGP Path Attributes are used to determine the BGP Best Path selection.
With these Path Attributes, network administrators can manage the BGP Traffic and determine way of the BGP traffic flow.
You can also test yourself on BGP Quizes Section for your BGP Path Attribute knowledge.
BGP Path Attributes divide into two groups. These classes are Well-Known and Optional path attributes. These two groups divide also into two subgroups again. These four BGP Path Attribute sub groups are:
Optional Transtive : Aggregator, Community
Optional Non-transtive :Multi-Exit-Discriminator (MED) , Originator ID, Cluster List
There is also one extra important BGP Path Attribute. This attribute is, Cisco Proprietary, BGP Weight Attribute.BGP Weight Attribute is only used on Cisco router and it is the first step of BGP Path Selection algorithm for Cisco devices.
You can also test yourself on BGP Quizes Section for your BGP Path Attribute knowledge.
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