From: Divin Mathew John (divinjohn@gmail.com)
Date: Sun Mar 29 2009 - 19:08:32 ART
yeah... first command is an exact math due to 0.0.0.0 wild card.! and the
second one starts it on all 4.4.4.0 - 4.4.4.255 interafces with IP address
in this range!
you r correct!
Thanking You
Yours Sincerely
Divin Mathew John
divinjohn@gmail.com
divin@dide3d.com
+91 9945430983
+91 9846697191
+974 5008916
PGP PUBLIC KEY BLOCK @ http://www.dide3d.com/divin_Public_PGP_key.txt
Sent from: Bangalore KA India.
On Mon, Mar 30, 2009 at 3:36 AM, Raghav Bhargava <raghavbhargava12@gmail.com
> wrote:
> I think with the first command that I mentioned, it does the exact match
> i.e only that route. With the second command it does for the entire network.
>
> Please correct me if I am also wrong...
>
> raghav
>
>
> On Sun, Mar 29, 2009 at 3:03 PM, Divin Mathew John <divinjohn@gmail.com>wrote:
>
>> * * Loopbacks are considered host routes in OSPF, and they are
>> advertised as /32. In Cisco IOS Software Releases 11.3T and 12.0, if the
>> ip ospf network point-to-point command is configured under loopbacks,
>> OSPF advertises the loopback subnet as the actual subnet configured on
>> loopbacks. ISDN dialer interface advertises /32 subnet instead of its
>> configured subnet mask. This is an expected behavior if ip ospf network
>> point-to-multipoint is configured.
>> and for the network command..! its nothing but telling your OSPF process
>> to start OSPF on that interface.! thats all... that basically if u give a
>> network x.x.x.x 255.255.255.255 area 0 ..it will indeed make sure that OSPF
>> is started on all interfaces which have an ip address and are not shut
>> down.!
>>
>> correct me if i am wrong!
>>
>> Thanking You
>>
>> Yours Sincerely
>>
>> Divin Mathew John
>> divinjohn@gmail.com
>> divin@dide3d.com
>> +91 9945430983
>> +91 9846697191
>> +974 5008916
>> PGP PUBLIC KEY BLOCK @ http://www.dide3d.com/divin_Public_PGP_key.txt
>> Sent from: Bangalore KA India.
>>
>> On Mon, Mar 30, 2009 at 3:16 AM, Raghav Bhargava <
>> raghavbhargava12@gmail.com> wrote:
>>
>>> Hi Experts,
>>>
>>> For example we have a loopback interface 0 with the Ip address
>>> 4.4.4.4/24
>>>
>>> Now when we have to advertise the network in the routing table, which of
>>> the
>>> following way is correct:-
>>>
>>> router ospf 1
>>> network 4.4.4.4 0.0.0.0 area 4
>>>
>>> OR
>>>
>>> router ospf 1
>>> network 4.4.4.0 0.0.0.255 area 4
>>>
>>> coz if we use any of the way we will see this entry in the routing
>>> table:-
>>>
>>> *4.0.0.0/32* is subnetted, 1 subnets
>>> O 4.4.4.4 [110/2] via 1.1.1.1, 00:00:44, FastEthernet0/0
>>>
>>> Now another question that I have is if i change the network type of the
>>> loopback from LOOPBACK ( which is default ) to point-to-point then the
>>> routing table entry changes like this
>>>
>>> *4.0.0.0/24 *is subnetted, 1 subnets
>>> O 4.4.4.4 [110/2] via 1.1.1.1, 00:00:44, FastEthernet0/0
>>>
>>> Please can some one explain this change in the subnet mask????
>>>
>>> As far as i know PPP converts the /24 or any other subnet into /32 host
>>> routes. Maybe i could be wrong here......:)
>>>
>>>
>>> --
>>> Warm Regards
>>> Raghav
>>>
>>>
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>>>
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>>>
>>>
>>>
>>>
>>>
>>>
>>
>
>
> --
> Warm Regards
> Raghav
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