From: Tony Schaffran \(GS\) (groupstudy@cconlinelabs.com)
Date: Mon Mar 10 2008 - 02:11:20 ARST
I always seem to read the mask too fast and reply before it really sinks in.
The example you have given 154.1.3.0 0.0.3.255 says to ignore bits 23 thru
32 which could have also been written as 154.1.0.0 0.0.3.255 since the .3 is
being ignored in the third octet.
In other words, it would match 154.1.0.0/24 thru 154.1.3.0/24
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 Tony
Schaffran (GS)
Sent: Sunday, March 09, 2008 8:58 PM
To: 'John'; 'YourPal'; 'Cisco certification'
Subject: RE: Enabling OSPF using minimum network statements
That one will not match the 154.1.13.0 subnet.
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: John [mailto:jgarrison1@austin.rr.com]
Sent: Sunday, March 09, 2008 8:12 PM
To: Tony Schaffran (GS); 'YourPal'; 'Cisco certification'
Subject: Re: Enabling OSPF using minimum network statements
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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