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Originally designed in the 1980s, OSPF version 2 is defined in RFC 2328 (1998). [1] The updates for IPv6 are specified as OSPF version 3 in RFC 5340 (2008). [ 2 ] OSPF supports the Classless Inter-Domain Routing (CIDR) addressing model.
The link-state ID of the type 5 LSA is the external network number. [1] Default routes for the AS can also be described by AS-external-LSAs. 6 Group Membership LSA This was defined for Multicast extensions to OSPF , [2] a multicast OSPF routing protocol which was not in general use.
Link-state routing protocols are one of the two main classes of routing protocols used in packet switching networks for computer communications, the others being distance-vector routing protocols. [1] Examples of link-state routing protocols include Open Shortest Path First (OSPF) and Intermediate System to Intermediate System (IS-IS). [2]
Certain additional characteristics such as multilayer interfacing may also be employed as a means of distributing uncompromised networking gateways to authorized ports. [1] This has the added benefit of preventing issues with routing protocol loops. [2] Many routing protocols are defined in technical standards documents called RFCs. [3] [4] [5] [6]
This article lists protocols, categorized by the nearest layer in the Open Systems Interconnection model.This list is not exclusive to only the OSI protocol family.Many of these protocols are originally based on the Internet Protocol Suite (TCP/IP) and other models and they often do not fit neatly into OSI layers.
An OSPF stubby area is one which receives routes from other areas in the OSPF domain but for external routes, which are communicated via a Type 5 Link-state advertisement, the stubby area is only aware of a default route; An OSPF totally stubby area is one which only has a default route to the rest of the OSPF routing domain. Such an area may ...
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Quagga is a network routing software suite providing implementations of Open Shortest Path First (OSPF), Routing Information Protocol (RIP), Border Gateway Protocol (BGP) and IS-IS for Unix-like platforms, particularly Linux, Solaris, FreeBSD and NetBSD. [2] [3] Quagga is distributed under the terms of the GNU General Public License v2 (GPL2).