Fundamentals of BGP Operations - Building BGP Neighbour Relationships - Internal BGP Neighbours

3 important questions on Fundamentals of BGP Operations - Building BGP Neighbour Relationships - Internal BGP Neighbours

Why does iBGP mostly use the loopback adress?

If interface fails , the underlying bgp connections will fail

What are the advantages of the peer-group command?

-To reduce number of configuration commands
-BGP builds one set of update messages for the peer group reducing some BGP processing and memory overhead

What is the syntax of the peer-group command with a neighbour?

neighbour 1.1.1.1 peer-group my-as

neighbour my-as peer-group
neighbour my-as remote-as 123
neigbour my-as update-source loopback1

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