As far as the OSPF goes, you shouldn't have too many problems. OSPF will
easily scale in terms of your area 0 mesh providing that:
The WAN links are stable
The routing table is aggregated/summarised effectively and thus routing
tables kept compact.
(cpu and memory are an issue with OSPF when flooding is increased
more than simple complexity of spf calculations)
I have seen problems in large ISP environments with this kind of
configuration, but on less stable protocols (i.e. eigrp; yugh!)
damon.
> -----Original Message-----
> From: Edward S. Desouza [mailto:edward_desouza@yahoo.com]
> Sent: 18 April 2001 11:14
> To: cisco-nsp@puck.nether.net
> Subject: [nsp] Frame Relay OSPF Design
>
>
> Hi Guys,
> Consider the following Scenario :
>
> 20 POPs connected by a full mesh of Frame Relay PVC's
> . Thus all the WAN interfaces on my routers are in the
> same subnet.
>
> My Physical Topology is partially meshed so that the
> FR PVC's are always UP. ( Redundancy at physical Layer
> )
>
> Does it make sence to put all my WAN interfaces on the
> routers in Area 0 ???? Considering that my WAN links
> are highly stable ?
>
> Also, Do you guys know of any problems ( besides the
> large no of PVC's ) in terms of scalaability of the
> above kind of solution ???? any big ISPs out there use
> the above design ????
>
>
> =====
> Edward S. Desouza
> 23/24 Manali 5,
> Evershine Nagar,
> Malad (W),
> Bombay 400064.
> Tel:9122-8886362
>
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