Fred,  The wildcard mask specifies the range of addresses (interfaces) that
OSPF will start on.  So, it specifies the range of 206.202.0.0 -
206.202.3.255 as the ip addresses that OSPF will be started and the
interfaces will be assigned to Area 0.  It does not do anything w.r.t
summarization.

Joe

"FREDL L AZARES" <[EMAIL PROTECTED]> wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> RouterA---------OSPF  Area 0-----------RouterB---------------OSPF  Area
> 0-------------RouterC
> 206.202.0.1/24                        206.202.0.2/24    206.202.1.1/24
>                         206.202.1.2/24
>
> Scenario: You have RIP routing domain and an OSPF Area 0 with
> redistribution. To reduce the number of RIP routes, you have to configure
> a summary-address in OSPF to only advertise one route to RIP networks.
>
> Configuration for RouterA:
>
> Router-A(config)#router ospf 1
> Router-A(config-router)#network 206.202.0.0 0.0.3.255 area 0
>
> I don't understand how they came up with wildcard mask 0.0.3.255. Can
> someone elaborate on this.
> Thanks in advance.
>
> Fred
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