BGP - Algorithm Prefers the Oldest External Path
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One of the last attributes that is examined as part of the BGP best path algorithm is it prefers the oldest external path. That is, the path that was learned first. This attribute is only valid for external paths, however. In this video, I'll be explaining this particular attribute, and we'll see how it is used to break the tie.
If you want to find out more about the BGP routing protocol, or the method by which attributes are used to determine the best path, take a look at some of my other videos linked below (after the chapter list...)
☑️ Chapter list:
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00:00 Introduction
00:31 Where is this attribute used?
01:27 How does it break the tie?
03:12 Why is the oldest external path the best
03:55 Summary
🟩 Related Videos and Links:
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Video: What is BGP? - • What is BGP?
Video: BGP attributes and determining the best path - • BGP Attributes and Determining the Best Path
Video: BGP Attribute Categories - • BGP Attribute Categories - well-known opti...
Video: BGP - The BGP Weight Attribute - • BGP - The BGP Weight Attribute
Video: BGP - Why is the BGP Best Path Algorithm so complex? - • BGP - Why is the BGP Best Path Algorithm s...
Video: BGP - What is the Local Preference Attribute? - • BGP - What is the Local Preference BGP Att...
Video: BGP - What is the Origin Code BGP Attribute? - • BGP - What is the Origin Code BGP Attribute?
Video: BGP - What is the MED BGP attribute? - • BGP - What is the MED BGP Attribute?
Video: BGP - Prefers eBGP routes over iBGP routes - • BGP - Why does the BGP Algorithm Prefer eB...
Video: BGP - Prefers the Lowest IGP Metric to the Next Hop - • BGP - Route with the Lowest IGP Metric to ...
BGP Official Definition RFC 4271 - https://datatracker.ietf.org/doc/html...
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