0

enter image description here

In the topology shown above each circle represent an area. Now I want to configure multi area OSPF on each router. So for the first router can I do like this:

router ospf 109
network 192.168.11.0 0.0.0.255 area 1
network 192.168.1.0 0.0.0.255 area 0
network 192.168.5.0 0.0.0.255 area 0
network 192.16.10.0 0.0.0.255 area 0
network 192.16.11.0 0.0.0.255 area 0

Is this correct method?

  • 1
    Just a comment to it - a router is called an ABR only when it has its interfaces in more than one area and out of those one area should be Area 0. – user5337995 May 18 at 5:11
3

I can't tell which router you're configuring, but generally speaking, you're correct.

Your diagram is slightly misleading, because it shows routers belonging to a particular area. The important thing to remember is that routers DO NOT belong in an area -- interfaces do. If a router has interfaces in more than one area, then it's an ABR. So the router configuration you've posted makes it an ABR.

  • Sorry, I wanted to keep the routers out of the circle but forgot somehow. So if I exclude the routers from the center, then my method is correct, right? – Ahmad Qayyum May 17 at 14:30
  • 2
    Just make the center circle slightly smaller so that the one interface on all the routers is outside the circle, and the rest are inside. – Ron Trunk May 17 at 14:55
  • why will I leave those interfaces out from the circle and will I consider them when configuring the routers for OSPF? – Ahmad Qayyum May 19 at 20:15
  • The interfaces inside the circle are in area 0. The others are in other areas. – Ron Trunk May 19 at 21:05
  • I have posted a question regarding this matter, can you check it? – Ahmad Qayyum May 19 at 22:04

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.