ospf question

I have no idea what I am doing wrong. In the image attached, I have 3 areas. Area 0 backbone which is the SWITCH in the middle. Area 30 which is connected to R6 (ABR) to R17 which is only in area 30. Then I have area 10 of which 48 is an ABR and R13 IS only in area 10.

What I did was I configured R6 is a "totally stubby area" since it's an ABR and R17 is a "STUB" Then I go to R13 which is ONLY in area 10 and do "show ip route" its still showing me routes of R17 and R18 in far top right. why is it?

So I started playing with this. I made R6 and R17 "totally stubby" by issuing "area 30 stub no-summery" on both routers. I go back to R13 and I still see all the routes of R17 and R18.

Then, I even changed R18 to  "totally stubby" (which I know is not right) and still  I still see all the routes of R17 and R18.

What am I doing wrong?

OSPF.jpgOSPF.jpg
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Shark AttackNetwork adminAsked:
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JustInCaseCommented:
Well, marking area as stub and totally stubby will only affect the area for which is configured, not other areas.
If you don't want to see routes from area 30 in area 20 you should configure area 20 as totally stubby area, but I am not sure that you can do that. I guess that drawing is not precise for area 20 - virtual link should be separated area, and not part of area 20. So if you really have virtual link you can't convert area 20 as stub area since, transit area cannot be a stub area.

Marking area as stub area reduces injecting routes in those areas, and not routes from stub or totally stub areas to reach other areas.
If area is marked as stub area ABR will not advertise LSA type 5 into stub area.
If area is marked as totally stubby area ABR will not advertize LSA type 3, 4 and 5 into totally stubby area.
But all routes from area 30 will still be advertised into area 0, and then to all other areas (if not suppressed). If routes would not be advertised by ABR  into area 0 than it would effectively isolate stub area completely from all other areas.

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Shark AttackNetwork adminAuthor Commented:
i think i figured it out . thanks
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