Open Shortest Path First extension for the support of multiarea networks with arbitrary topologies
Gomes, X.
; Fonseca, J.
;
Valadas, R.
IET Networks Vol. 13, Nº 3, pp. 241 - 248, January, 2024.
ISSN (print): 2047-4954
ISSN (online): 2047-4962
Scimago Journal Ranking: 0,44 (in 2023)
Digital Object Identifier: 10.1049/ntw2.12112
Abstract
Open Shortest Path First (OSPF) currently supports multiarea networking with two severe limitations: the multiarea topology is restricted to a two-level hierarchy, and globally optimal routing may not be achieved. An OSPF extension that overcomes these limitations is proposed by introducing a routing overlay for the dissemination of multiarea routing information. It applies to both OSPFv2 (IPv4) and OSPFv3 (IPv6) and is transparent to area-internal routers. The extension was fully implemented and tested, and the results show that the added functionality is completely achieved, at the cost of a small penalty in terms of convergence times for small networks.
