From: CCIE-Maillist (CCIE-Maillist@xxxxxxxxxx)
Date: Fri May 17 2002 - 19:40:33 GMT-3
Derek,
Genius, pure genius! Yes, that was it.
I had to reload the routers, even after taking it off and clearing ip ospf proc
ess but when the routers came back up, the "sh ip o" doesn't mention area 0, at
all.
Excellent, Thanks so much!
Thanks,
David
-----Original Message-----
From: Derekc@mad.scientist.com [mailto:derekc@mad.scientist.com]
Sent: Friday, May 17, 2002 4:56 PM
To: Davis, David
Subject: RE: RE: area 0 inactive - okay?
Hi David,
As far as I can see, "area 0 inactive" at your router 6 does not affect
your routing because you really don't have an interface assign to area 0.
The reason your Router 6 shows the "area 0 inactive" is because it does not
have any neighbor in area 0. And the reason your Router 6 thinks it has
anything to do with area 0 is that you have "area 0 authentication" command.
As it is configured between your router 5 and router 6, router 6 is an
interior router of area 5. Router 6 does not need "area 0 authentication"
command to participate the overall OSPF process. The "area authentication"
command in OSPF is only needed when the router that has an area that has an
"area authentication" requirement.
Most of all, since your router 6 really doesn't have an area 0, your overall
routing structure is not affected. However, if you do have an interface
assigned to area 0, your router 6 will experience adjacency problem (and
possible routing problems if you have other networks hanging off router 6
and claim to be in area 0). Since your router 5's area 0 is connected via
virtual link, you cannot connect your router 6 area 0 via area 5. The only
work around is to configure the connection between your router 5 and router
6 to be inside area 0.
I hope this is helpful
Derek
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
Davis, David
Sent: Friday, May 17, 2002 4:36 PM
To: Michael Canfield; ca_vices@indiatimes.com
Cc: ccielab@groupstudy.com
Subject: RE: RE: area 0 inactive - okay?
Michael,
Thanks for your help.
I know with OSPF everything has to have a connection to area 0.
In this configuration, is it okay that area 0 shows inactive? Or is the fact
that area 0 is inactive telling me that I need to "fix" something?
If I had some trouble with route redistribution, I would know that I need to
fix something but, as far as I can tell, it seems to work.
Thanks,
David
-----Original Message-----
From: Michael Canfield [mailto:ccnpccdp@hotmail.com]
Sent: Friday, May 17, 2002 3:18 PM
To: Davis, David; ca_vices@indiatimes.com
Cc: ccielab@groupstudy.com
Subject: RE: RE: area 0 inactive - okay?
Your R6 config shows no networks assigned to area 0, thats why area 0 shows
inactive on R6
>router ospf 1
>log-adjacency-changes
>area 0 authentication message-digest
>redistribute rip metric 20 metric-type 1 subnets route-map fromrip
>network 150.10.6.6 0.0.0.0 area 5
>network 150.10.60.0 0.0.0.255 area 5
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