From: Brian McGahan (bmcgahan@internetworkexpert.com)
Date: Fri Jun 24 2005 - 20:58:57 GMT-3
The network statement in IGP does not dictate what networks you
advertise, but instead what interfaces run the protocol. If you say
"network 192.168.1.0 0.0.0.255 area 0" this means all interfaces that
start with 192.168.1 will be in area 0. If you say "network 192.168.1.1
0.0.0.0 area 0" this means only the interface with the IP address
192.168.1.1 will be in area 0. The network statement in BGP on the other
hand does dictate what you advertise.
In IPv6 this confusion is overcome by moving the routing
protocol commands to the interface level (i.e. "ipv6 rip 1 enable"). I
wouldn't be surprised if the IGP "network" command was eventually
deprecated for this type of syntax.
HTH,
Brian McGahan, CCIE #8593
bmcgahan@internetworkexpert.com
Internetwork Expert, Inc.
http://www.InternetworkExpert.com
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> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
Of
> Mark Atis
> Sent: Friday, June 24, 2005 6:44 AM
> To: ccielab@groupstudy.com
> Subject: Re: OSPF 0.0.0.0 wildcard (inverse) mask
>
> Greetings,
>
> Let me ask another question . some of you have stated
> that they will always use 0.0.0.0 wild mask unless
> requested otherwise . can you please elaborate on the
> choice versus using a wild mask that matches the
> actual subnet mask for the network being advertised to
> OSPF .
>
> Example :
> if you are given an interface of 192.168.1.1/24 , why
> would you choose to advertise it as
> network 192.168.1.1 0.0.0.0 area BALH
> rather than
> network 192.168.1.0 0.0.0.255 area BLAH
>
> Thanks
>
>
>
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This archive was generated by hypermail 2.1.4 : Wed Jul 06 2005 - 14:43:43 GMT-3