Question about OSPF and LSA type 3 behavior. Doyle in Routing TCP/IP vol 1:
"When another router receives a Network Summary LSA from an ABR, it does
not run the SPF algorithm. Rather it simply adds the cost of the route to
the ABR and the cost included in the LSA. A route to the advertised
Hey Ralph,
This statement is quite true. Is there an area you wish to break down more
fully?
For support, see the draft-ietf-ospf-abr-alt-04.txt which includes the
following text:
In OSPF domains the area topology is restricted so that there must be
a backbone area (area 0) and all other ar
While I agree completely with Peter's statements, I think there may be two
issues being mingled.
Area 0.0.0.0, especially when there are no backbone-only routers, uses a
DV-like algorithm to
propagate inter-area and exterior routes. There's no use for a Dijkstra.
Inside a nonzero area, the Di
EMAIL PROTECTED]]
Sent: Wednesday, August 15, 2001 9:44 AM
To: [EMAIL PROTECTED]
Subject: Re: OSPF Distance Vector in the backbone? [7:16120]
While I agree completely with Peter's statements, I think there may be two
issues being mingled.
Area 0.0.0.0, especially when there are no backbone-only rou
ECTED]]
> Sent: Wednesday, August 15, 2001 9:44 AM
> To: [EMAIL PROTECTED]
> Subject: Re: OSPF Distance Vector in the backbone? [7:16120]
>
>
> While I agree completely with Peter's statements, I think there may be two
> issues being mingled.
>
> Area 0.0.0.0, especially w
and make their routing decision based on that comparison?
>
>BJ
>
>
>
>-Original Message-
>From: Howard C. Berkowitz [mailto:[EMAIL PROTECTED]]
>Sent: Wednesday, August 15, 2001 9:44 AM
>To: [EMAIL PROTECTED]
>Subject: Re: OSPF Distance Vector in the backbone?
ea where there is no
explicit inter-area route to the destination, yes.
>
>
>-Original Message-
>From: Howard C. Berkowitz [mailto:[EMAIL PROTECTED]]
>Sent: Wednesday, August 15, 2001 9:44 AM
>To: [EMAIL PROTECTED]
>Subject: Re: OSPF Distance Vector in the backbone? [7:16120]
&
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