ospf and bgp interview questions and answers

18. Differentiate between Open Shortest Path First (OSPF) and Border Gateway Protocol (BGP).
Open Shortest Path First (OSPF) Border Gateway Protocol (BGP)
Internal gateway protocol is another name for it. It is referred to as an external gateway protocol.
OSPF is a simple protocol to set up. BGP implementation is challenging.

Most Commonly Asked BGP Interview Questions

Frequently requested BGP questions, such as scenario-based BGP interview questions and BGP troubleshooting interview questions and answers, have been addressed in this blog.

BGP Interview Questions and Answers for Freshers

Border Gateway Protocol (BGP) is a protocol that allows two networks to communicate with one other. BGP is a standardized outside gateway protocol that allows autonomous systems (AS) on the Internet to share routing and reachability information. A route vector protocol is what the protocol is called. The Border Gateway Protocol is engaged in fundamental routing choices and determines routing decisions depending on pathways, network regulations, or rule sets a network administrator provides.

Within an autonomous system, BGP may be utilized for routing. Interior Border Gateway Protocol, often known as Internal BGP or iBGP, is used in this application. The protocols Internet implementation, on the other hand, is known as Exterior Border Gateway Protocol, External BGP, or eBGP.

BGP Interview Questions For Experienced CCNA and CCNP Network Engineers

In this article, you will find the most important and most asked BGP Interview Questions For Experienced CCNA and CCNP Network Engineers. It will cover all concepts of BGP (Border Gateway Protocol) .

BGP stands for Border Gateway Protocol and it is the main dynamic routing protocol used on the Internet. BGP is for large networks and is normally used for connecting different ISPs. Since BGP operates with large amounts of data (the current size of the table for IPv4 is more than 450 thousand routes), the principles of its configuration and operation are different from the internal dynamic routing protocols (IGP). BGP may be used for routing within an AS and classified as IGP protocol while the other protocols may be referred to as Exterior Border Gateway Protocol. BGP is considered as a path vector protocol & it routing metric is based on paths, network-policies sets by a network administrator.

What do you know about BGP, explain some basic characteristics?

This is a General BGP Interview Question most face in a networking job interview.

BGP is a path-vector protocol with the following common characteristics:

  • Uses TCP to transfer data, this ensures reliable delivery of protocol updates (port 179)
  • Sends updates only after network changes (no periodic updates)
  • Periodically sends keepalive messages to verify TCP connections.
  • The protocol metric is called path-vector or attributes.
  • FAQ

    Does OSPF use BGP?

    BGP and OSPF are two of the most common routing protocols. While BGP excels with dynamic routing for large networks, OSPF offers more efficient path choice and convergence speed.

    Why BGP is used instead of OSPF?

    Scale: BGP is more flexible and scalable than OSPF and it is also used on a larger network. Preferred path: OSPF is used to determine the fastest route while BGP puts emphasis on determining the best path.

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