You will find these kind of logical diagrams in some books / tutorials. All routers are connected to each other with sub-interfaces of same interface. This post is to show you how to wire this setup in a physical topology.
In these kind of diagrams, we only see the L3 part (routers). But the actual topology contains a switch.
E0/0 of all routers are connected to the...
I am going to configure this AP fully in rommon mode which will then be work fine after connected to the network without any configuration remotely. This can be handy when the OS is corrupted / accidentally deleted.
For any error which breaks the booting sequence / accidentally images deleted, the AP will directly go to the rommon mode like below. To go to ROMMON mode manually,...
OSPF default nssa-external route type N2 has a fixed metric while N1 increments its metric when its goes through hop by hop. So when N2 is used, a router in a regular area which has several paths to ASBR will see equal metric values but chooses the lowest cost path correctly. Technically that seed metric does not do anything in path selection. It is done through the route...
OSPF default external route type E2 has a fixed metric while E1 increments its metric when its goes through hop by hop. So when E2 is used, a router in a regular area which has several paths to ASBR will see equal metric values but chooses the lowest cost path correctly. Technically that seed metric does not do anything in path selection. It is done through the route recursion...
If a router in a stub area has 2 paths to area 0 and if you want to route traffic in 2 different paths (one path for external routes & another path for other inter area routes) here is the best way to do it.
You can download initial configuration files of the above topology from here.
Quick summary of the topology:
Area 1 is a stub area & area 2 is a regular...
