RE: ospf virtual-link over totally stubby area

From: Ajay Prakash (ajay.prakash@networkpeople.co.in)
Date: Tue Nov 06 2007 - 00:33:54 ART


Well, you could always use IP unnumbered, and there would be no need of
using a new IP address.

Ajay

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of Alex
Steer
Sent: Tuesday, November 06, 2007 12:11 AM
To: M e; ccielab@groupstudy.com
Subject: RE: ospf virtual-link over totally stubby area

Yeh, It give me an error when I try to configure a virtual-link over
area47.

The lab said you cannot make new IP addresses. How can you configure a gre
tunnel?

________________________________

From: M e [mailto:iosluver@gmail.com]
Sent: Mon 11/5/2007 6:29 PM
To: Alex Steer
Subject: Re: ospf virtual-link over totally stubby area

Ajay just hi the nail on the head. Stub areas don't support virtual-links so
the only other way to do this is to use a GRE tunnel.

On 11/5/07, Alex Steer <alex.steer@eison.co.uk> wrote:

        Hi,

        I got completely stuck on this question I hoped someone maybe able
to help
me
        out. The topology is as follows

        AREA 0=Router4====area 47=====Switch1=area0

        The question was (word for word):-

        Configure OSPF area 47 on the Ethernet segment between R4 and SW1
        Devices in OSPF area 47 should only receive LSA of type 1, 2 and a
default
of
        type 3.

        To me that says configure Router 4 with "area 47 stub no-summary"
        The problem then is that I cant configure a virtual-link to SW1s
area0.
        Is the answer on router4:-
        configure area47 as normal area
        configure "default-information orginate always" on router4
        configure "area 47 filter-list prefix prefix-list"
        ip prefix-list prefix-list permit 0.0.0.0/0 le 32

        Can anybody suggest for sure?

        Many thanks

        Alex

        



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