title: Effect of DR failure on data traffic in OSPF
body: <p>I read somewhere that the forwarding of data traffic is interrupted when the DR of an OSPF network fails. Why is this so? As per my understanding, the network LSA originated by the DR is still present in the AS, and that would describe the routers attached to the network, and should still allow the data traffic to be forwarded to that network. Then why is it that failure of DR should interrupt data traffic? Can any OSPF experts help with this doubt?</p>