RE: OSPF NSSA Question

From: Lykourgiotis Paraskevas (ParaskevasL@xxxxxxxxxxxx)
Date: Wed Dec 20 2000 - 14:45:50 GMT-3


   
Hi,

Michael you are right at all.
I removed the OSPF process on both routers and put it back and it worked.

P.S. All, be very carefull with this in the real CCIE LAB.

-----Original Message-----
From: Michael Yu [mailto:michael_yu@cyber-select.com]
Sent: Monday, December 18, 2000 6:28 PM
To: Mohamed Heeba; 'Simon Hope'; Lykourgiotis Paraskevas
Cc: ccielab@groupstudy.com
Subject: Re: OSPF NSSA Question

Hi all,

Just joined the group last week...sorry if I misunderstand what u guys are
talking. I think Lykourgiotis should be correct for the
configuration...quiet straight forward.

I was trainer before and got a funny experience. For OSPF lab, first task is
to configure normal area attached to backbone area...easy. Then the lab will
ask you to change the normal area to NSSA. Problem happen here! Even your
configuration is 100% correct, but the ABR(R2) will not inject the route to
backbone area if you follow the sequence. The solution is to remove the
whole OSPF process on ABR(R2) and R1,then configure a new NSSA. Therefore if
u tried the scenario by only configuring NSSA, should be no problem. Problem
happens when change normal area to NSSA.

Michael
----- Original Message -----
From: "Mohamed Heeba" <MAHeeba@itqan.co.ae>
To: "'Simon Hope'" <shope@netsatx.net>; "Lykourgiotis Paraskevas"
<ParaskevasL@pcsystems.gr>
Cc: <ccielab@groupstudy.com>
Sent: Monday, December 18, 2000 8:25 PM
Subject: RE: OSPF NSSA Question

> hi
> that is right , i just tried this scenario and it worked fine , R3 sees
the
> loopback without problems
> i guess u many have to check
> 1-do R2 and R3 forming adjacency ??
> 2-do u define the NSSA in both routers (R1 and R2)??
>
> i guess u may have fogot something basic in the configuration
> thx
>
> > -----Original Message-----
> > From: Simon Hope [SMTP:shope@netsatx.net]
> > Sent: Monday, December 18, 2000 3:17 AM
> > To: Lykourgiotis Paraskevas
> > Cc: ccielab@groupstudy.com
> > Subject: Re: OSPF NSSA Question
> >
> > Hi,
> >
> > Is the connected subnet in R2's OSPF database as a Type7 LSA in the NSSA
> > area OSPF process?
> >
> > If you summarise the LSA on the ASBR (R1) it will definately get into
area
> > 0
> > as it will definately be converted to a type 5.
> >
> > I am interested in this problem, I would have thought this route would
> > automatically go into area 0 as well as a Type 5 LSA - I'll set it up
and
> > let you know how I get on!!
> >
> > Cheers
> > Simon
> > ----- Original Message -----
> > From: "Lykourgiotis Paraskevas" <ParaskevasL@pcsystems.gr>
> > To: <ccielab@groupstudy.com>
> > Sent: Monday, December 18, 2000 10:58 AM
> > Subject: OSPF NSSA Question
> >
> >
> > > Hello Everybody.
> > >
> > > I have a problem with OSPF NSSA areas.
> > > Please consider the following scenario:
> > >
> > > R1----LAN----R2----LAN----R3.
> > >
> > > All three routers run OSPF.
> > > I have set up the network bettween R1 and R2 as area 1 and configured
it
> > as
> > > an NSSA area.
> > > The network between R2 and R3 has been configured as area 0.
> > > On R1, I have created a loopback interface and I redistr connected
> > subnets
> > > into the OSPF process.
> > > The problem is that although R2 does learn about this subnet, R3
> > doesn't.
> > > Any idea?
> > > Thanks in advance.
> > >



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