Key facts
- Purpose
- Routing protocol
- Introduction
- 1989 ; 37 years ago ( 1989 )
- Rfc s
- 1131 , 1247 , 1583 , 2178 , 2328 , 3101 , 5709 , 6549 , 6845 ...
via Wikipedia infobox
Wikidata facts
Show 4 more facts
- Commons category
- Open Shortest Path First
- port
- 89
- short name
- OSPF
- publication date
- 1988-00-00
Sources (7)
via Wikidata · CC0
~38 min read
Article
Open Shortest Path First (OSPF) is a routing protocol for Internet Protocol (IP) networks. It uses a link state routing (LSR) algorithm and falls into the group of interior gateway protocols (IGPs), operating within a single autonomous system (AS).
OSPF gathers link state information from available routers and constructs a topology map of the network. The topology is presented as a routing table to the internet layer for routing packets by their destination IP address. OSPF supports Internet Protocol version 4 (IPv4) and Internet Protocol version 6 (IPv6) networks and is widely used in large enterprise networks. IS-IS, another LSR-based protocol, is more common in large service provider networks.