Re: Enabling OSPF using minimum network statements

From: John (jgarrison1@austin.rr.com)
Date: Mon Mar 10 2008 - 01:11:40 ARST


how about net 154.1.3.3 0.0.3.255 or net 154.1.3.0 0.0.3.255

My logic is that this will match all networks above 154.1.3.0, which
excludes 154.1.0.3

----- Original Message -----
From: "Tony Schaffran (GS)" <groupstudy@cconlinelabs.com>
To: "'YourPal'" <dearprudence28@gmail.com>; "'Cisco certification'"
<ccielab@groupstudy.com>
Sent: Sunday, March 09, 2008 9:58 AM
Subject: RE: Enabling OSPF using minimum network statements

> Actually, you did not forget to include your 38 network. I read your
> requirement wrong.
>
> You can actually summarize your network statement to include those three
> with this.
>
> router ospf 1
> network 154.1.1.0 0.0.254.255 area 0
>
>
>
>
> Tony Schaffran
> Network Analyst
> CCIE #11071
> CCNP, CCNA, CCDA,
> NNCDS, NNCSS, CNE, MCSE
>
> www.cconlinelabs.com
> Your #1 choice for online Cisco rack rentals.
>
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> YourPal
> Sent: Sunday, March 09, 2008 5:24 AM
> To: Cisco certification
> Subject: Enabling OSPF using minimum network statements
>
> Hi Group,
>
> A router has the following IP addresses:
>
> !
> interface FastEthernet0/0
> ip address 154.1.38.3 255.255.255.0
> !
> interface FastEthernet0/1
> ip address 154.1.3.3 255.255.255.0
> !
> interface Serial0/0
> ip address 154.1.0.3 255.255.255.0
> !
> interface Serial0/2
> ip address 154.1.13.3 255.255.255.0
> !
> interface Serial0/3
> ip address 154.1.23.3 255.255.255.0
> !
>
> The task requires to enable OSPF area 0 on interfaces Fa0/1, s0/2, and
> s0/3
> using the minimum amount of network statements necessary. Do not enable
> area
> 0 on any other interfaces.
>
> As hard as I tried, I'm not able to use minimum network statements to
> cover
> those 3 interfaces without covering s0/0. So I configured 3 statements as
> follows (to me, this is the min.):
>
> !
> router ospf 1
> network 154.1.3.3 0.0.0.0 area 0
> network 154.1.13.3 0.0.0.0 area 0
> network 154.1.23.3 0.0.0.0 area 0
> !
>
> Let me know if you have a solution that meets the task requirement.
>
>
> Thank you.
>
> BR,
> Emil
>
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