Difference Between BGP and OSPF

OSPF and BGP are two of the most common routing protocols used to route traffic on very large networks.


IT Quiz

Test your knowledge about topics related to technology

1 / 10

Which number system has a base 16

2 / 10

Phones that offer advanced features not typically found in cellular phones, and are called

3 / 10

What is the radix of the octal number system?

4 / 10

When a machine possesses the ability to mimic human traits like make decisions, predict the future, learn and improve on its own said to have

5 / 10

Which mobile company first introduced Emoji internationally on their mobile devices

6 / 10

What does AM mean?

7 / 10

Which of the following is defined as an attempt to steal, spy, damage or destroy computer systems, networks, or their associated information?

8 / 10

Machine becomes intelligent once they are

9 / 10

WWW Stands for

10 / 10

How many numbers of home pages a web site can contain

Your score is


With routers sending information about network topology between each other, OSPF and BGP help your home router know how to get data packets from point A to point B.


The difference between BGP and OSPF is BGP stands for Border Gateway Protocol, but OSPF stands for Open Shortest Path First. BGP has slow convergence, and OSPF has fats convergence. OSPF uses Dijkstra Algorithm, and BGP uses the best path algorithm. The implementation is complex in BGP and easy in OSPF.


BGP can be used as a critical element of a company’s strategy for success in today’s global marketplace.

BGP uses a routing table that lists IP addresses and networks along with a preference value associated with each route. BGP is a routing protocol that defines the rules by which routers communicate with each other.

OSPF allows for hierarchical network designs with areas and autonomous systems.

Autonomous systems could be individual companies or separate administrative regions depending upon the needs of your organization.

Areas are used to segment your network into logical sections which are capable of being added together to form an autonomous system if need be.

Comparison Table

Parameters of ComparisonBGPOSPF
Full-FormBorder Gateway ProtocolOpen Shortcut Path First
Port Number17989
StateLink statePath vector
Type of protocolTCP protocolIP protocol

What is BGP?

BGP is the routing protocol used to exchange network reachability information between routers on the Internet.

It’s an essential part of how the Internet works, and understanding it can help you better understand what makes the Internet work as well as how to troubleshoot problems that might arise.

The router selects the best route according to its policies based on this preference value. Generally, BGP looks for the shortest path from one network to another.

The best way to understand this is to think of it as a type of language.

In this case, the people who speak BGP are Internet Service Providers (ISPs), and the language they use to talk to each other is Border Gateway Protocol (BGP).

BGP is a routing protocol that uses the Border Gateway Protocol to allow routers in different autonomous systems to establish paths across the Internet.

It is used by Internet Service Providers to exchange routing information across the world. In this article, we’ll introduce you to BGP and how it works for you to understand why it’s important for your business.

The primary purpose of BGP is to allow networks to make forwarding decisions based on a global view of the Internet.

What is OSPF?

OSPF is a link-state routing protocol developed by Cisco in the late 1980s. It is widely used in IP internetworks and large corporate intranets.

OSPF provides a mechanism for the dynamic distribution of routing information within an autonomous system (AS). This allows imported routes and their associated metrics to be redistributed with little difficulty.

OSPF uses the shortest path first (SPF) algorithm that is based on Dijkstra’s algorithm for finding the shortest paths between nodes in a graph. OSPFv2 is an open standard protocol for exchanging routing information.

It is used to exchange network reachability information within a single autonomous system (AS) and also between ASes on the Internet.

OSPF to advertise the networks connected to your edge routers so that other ASes can send traffic directly to you via the MPLS backbone without having any explicit knowledge of the actual routes over which packets will be forwarded.

OSPF is a popular routing protocol used in large networks. It can be used to create an internal backbone for the network, creating areas and summarization routes across them.

OSPF was developed by the organization of systems administrators (OSI). OSPF is a great protocol for routing information between different networks.

The protocol has been around since the days of Windows NT and has been adapted to many different environments, including mobile ad hoc networks.

Main Differences Between BGP and OSPF

  1. The BGP full form is Border Gateway Protocol, but OSPF full form is Open Shortest Path First.
  2. The convergence is slow in BGP compared to OSPF.
  3. BGP uses TCP protocol, but OSPF uses IP protocol.
  4. The port number for BGP is 179, and OSPF is 89.
  5. BGP has a link state, but OSPF has a path vector.
  6. BGP is complex as compared to OSPF in implementation.


  1. https://dl.acm.org/doi/abs/10.1145/316194.316231
  2. https://books.google.com/books?hl=en&lr=&id=YXUWsqVhx60C&oi=fnd&pg=PR10&dq=ospf&ots=KzyFRh_UG4&sig=wEA4ZSb11fHYUAS0hV43wYeKZeA
One request?

I’ve put so much effort writing this blog post to provide value to you. It’ll be very helpful for me, if you consider sharing it on social media or with your friends/family. SHARING IS ♥️