OSPF route failover

Posted on by David Vassallo

A colleague recently asked why, at a basic level, is dynamic routing such as OSPF useful? The very first thing that comes to mind is of course route failover. That is, when a network contains multiple routes to the same network, dynamic routing automatically will "failover" to an alternative route when the primary route is unavailable. … Continue reading OSPF route failover

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Controlling routing updates in OSPF

Posted on by David Vassallo

SonicOS 5.6 (still in beta at time of writing) has the ability to tunnel dynamic routing protocols over IPSec tunnels. Similar to the way Cisco does this by tunneling dynamic routing updates through GRE, then in turn tunneling the resulting packets through the IPSec tunnel. In preperation for trying out this new SonicOS feature, I … Continue reading Controlling routing updates in OSPF