OSPF VIRTUAL LINKS  An Open Shortest Path First (OSPF) autonomous system has all areas physically connected to the backbone area (Area 0). I...

We have configured OSPF on Router_1, Router_2, and 2 more routers in OSPF area 0. Router_1 is connected to network 10.1.1.1/8 which has...

OSPF Default Route Configuring OSPF Default route is not a big problem. We have couple of options when we want to OSPF default route. ...

In this section we are going to configure GRE Tunnel instead of virtual link and also we will configure redistribution to get external rout...