From: Jason Sinclair (sinclairj@powertel.com.au)
Date: Wed Oct 02 2002 - 20:49:44 GMT-3
I would not call this design as such, however this could be configured via
the use of two virtual links to area 0 via the other two respective areas.
Jason Sinclair CCIE #9100
Manager, Network Control Centre
POWERTEL
55 Clarence Street,
SYDNEY NSW 2000
AUSTRALIA
office: + 61 2 8264 3820
mobile: + 61 416 105 858
email: sinclairj@powertel.com.au
-----Original Message-----
From: Howard C. Berkowitz [mailto:hcb@gettcomm.com]
Sent: Thursday, 3 October 2002 04:28
To: ccielab@groupstudy.com
Subject: Re: OSPF Design
At 1:51 PM -0400 10/2/02, Peter Wodle wrote:
>I wonder if the following OSPF Design is valid/workable?
>
>Have the area 0 with a no of routers. 1 ABR links area 0 to Area 1.
>another ABR links area 0 to Area 2. So far no issues. But then we
>have R12 that connects area 1 & area 2 togather i.e. R12 has one
>interface in area 1 and one one interface in area 2. R12 has no
>interface in area 0. So, it is an ABR (right?) but has no link to
>area 0. Could this could lead to area 1 & area 2 exhange routes via
>this "backdoor" router?R12
>
>Can we do this? I can see it is bad design but...
Not in the present standard or most (if not all) Cisco
implementations. There is a proposal in the IETF OSPF Working Group
to do something close to it:
http://www.ietf.org/internet-drafts/draft-ietf-ospf-mlinks-03.txt
**********************************************************************
PowerTel Limited, winners of
Best Corporate/Wholesale Broadband Initiative, Australian Telecom Awards 2002
Broadband Wholesale Carrier of the year, CommsWorld Telecomms Awards 2001
Best Emerging Telco, Australian Telecom Awards 2001
**********************************************************************
This email (including all attachments) is intended solely for the named
addressee. It is confidential and may contain commercially sensitive
information. If you receive it in error, please let us know by reply email,
delete it from your system and destroy any copies.
This email is also subject to copyright. No part of it should be reproduced,
adapted or transmitted without the prior written consent of the copyright owner.
Emails may be interfered with, may contain computer viruses or other defects
and may not be successfully replicated on other systems. We give no
warranties in relation to these matters. If you have any doubts about
the authenticity of an email purportedly sent by us, please contact us
immediately.
**********************************************************************
This archive was generated by hypermail 2.1.4 : Tue Nov 05 2002 - 08:35:37 GMT-3