A Device and a System for OSPF Cost Metrics Mirroring

A communication router, adapted for use in an Open Shortest Path First (OSPF) protocol compliant communication network, is provided. The communication router comprises processing means configured to automatically adjust the communication router's cost metrics set for forwarding communication traffic via at least one link that extends between that communication router and a respective adjacent neighboring router. The cost metrics is adjusted in compliance with costs determined by the respective adjacent neighboring router for forwarding traffic from the respective adjacent neighboring router along that link.