How to turn your CentOS box into an OSPF router using Quagga
I had originally written this article for xmodulo . Quagga is an open source routing software suite that can be used to turn your Linux box into a fully-fledged router that supports major routing protocols like RIP, OSPF, BGP or ISIS router. It has full provisions for IPv4 and IPv6, and supports route/prefix filtering. Quagga can be a life saver in case your production router is down, and you don't have a spare one at your disposal, so are waiting for a replacement. With proper configurations, Quagga can even be provisioned as a production router. In this tutorial, we will connect two hypothetical branch office networks (e.g., 192.168.1.0/24 and 172.17.1.0/24) that have a dedicated link between them. Our CentOS boxes are located at both ends of the dedicated link. The hostnames of the two boxes are set as 'site-A-RTR' and 'site-B-RTR' respectively. IP address details are provided below. Site-A: 192.168.1.0/24 Site-B: 172.17.1.0/24 Peering betwe...