From: loc.pham@comcast.net
Date: Tue May 03 2005 - 14:15:06 GMT-3
Cool, good to know Brian, thx...
Hey Tim, for a moment, I thought you routes was looping there ;-) he he. You seem to think all of the tricky stuffs that one can thinki'g of .
lP.
> Short answer, no. Long answer:
>
> RFC 2328 - OSPF Version 2
>
> 3.7. Partitions of areas
>
> OSPF does not actively attempt to repair area partitions. When
> an area becomes partitioned, each component simply becomes a
> separate area. The backbone then performs routing between the
> new areas. Some destinations reachable via intra-area routing
> before the partition will now require inter-area routing.
>
> However, in order to maintain full routing after the partition,
> an address range must not be split across multiple components of
> the area partition. Also, the backbone itself must not
> partition. If it does, parts of the Autonomous System will
> become unreachable. Backbone partitions can be repaired by
> configuring virtual links (see Section 15).
>
>
> Brian Dennis, CCIE #2210 (R&S/ISP-Dial/Security)
>
> bdennis@internetworkexpert.com
> Internetwork Expert, Inc.
> http://www.InternetworkExpert.com
> Toll Free: 877-224-8987
> Direct: 775-745-6404 (Outside the US and Canada)
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> ccie2be
> Sent: Tuesday, May 03, 2005 9:37 AM
> To: Group Study
> Subject: OSPF non-backbone area
>
> Hi guys,
>
> Why is the following topology OK?
>
> r1 area 1 r2 area 0 r3 area 1 r5
> |
> r4
> |
> area 1
>
> Notice that there are multiple non-contiguous area 1's.
>
> Are there any limitations regarding using non-unique non-backbone areas
> multiple times?
>
> Or, can the same area number be used for any non-backbone area
> regardless of
> any other topology considerations?
>
> TIA, Tim
>
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