BGP (Border Gateway Protocol) is an open source, dynamic Exterior Gateway protocol designed to exchange routing and reachability information among various Autonomous Systems on the IP Networks and the Internet. It is a path-vector protocol type and uses the Composite metric (based on 11 factors usually) as its metric value. It is an EGP (Exterior Gateway Protocol) used for routing the internet. BGP has 4 (Open, Update, Keepalive, Notification) no. of packets and has an Admin Distance of 20 (eBGP), 200 (iBGP). Its neighbor type is Statically (manually) configured and has 6 no. of neighbor states. BGP uses TCP connection Read More …
Tag: BGP PATH ATTRIBUTES
BGP Interview Questions & Answers
BGP is which type of Routing Protocol? BGP is a Path Vector Routing Protocol. It falls under the category of EGP (Exterior Gateway Protocol) Which algorithm is used by BGP for best path selection? BGP uses Composite Metric for best path selection and install the best routes into the routing table What are BGP Path attributes? BGP uses multiple attributes or metrics for best path selection which are Weight (cisco), LOCAL_PREF, aggregate, as_path, origin, MED, neighbor type (ebgp > ibgp), igp metric (next_hop), route age, router ID (originator ID), Neighbor IP How many neighbor states are there Read More …
BGP Notes Cheatsheet – Part 2
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