Re: Inconsistent address and mask

Nadeem,
the network mask defines the boundary between network and host regions
of an IP address.
A network address, by definition, has the host part set to zeroes.

If it does not, as in your case, IOS barfs :)

I.e. in:
  ip route 23.23.23.0 255.255.0.0 12.12.12.2
           ^^^^^^^^^^^^^^^^^^^^^^
           NNNNN HHHH

255.255.0.0 means 23.23 is network and 23.0 is host part.

-Carlos

Nadeem Anjum @ 24/06/2013 03:15 -0300 dixit:
> Dear All,
>
> Concept is still not clear. Can you please explain in more details.
>
>
>
> Thanks,
> Nadeem Anjum
>
>
>
>> ________________________________
>> From: Eduardo
> Vazquez <evazquez_at_gmail.com>
>> To: Nadeem Anjum <nadeemkool_at_yahoo.com>
>> Cc:
> ccie groupstudy <ccielab_at_groupstudy.com>
>> Sent: Saturday, June 22, 2013 5:14
> PM
>> Subject: Re: Inconsistent address and mask
>>
>>
>> Your mask and network
> number don't match. It has to be either:
>>
>> Ip route 23.23.0.0 255.255.0.0
> 12.12.12.2
>>
>> Or
>>
>> Ip route 23.23.23.0 255.255.255.0 12.12.12.2
>>
>> On
> Saturday, June 22, 2013, Nadeem Anjum wrote:
>>
>>> Dear All,
>>>
>>> I am facing
> the following error. My routers output is as follow.
>>> Why I am facing this
> error.
>>>
>>> Cisco-R1#sh ip int brief
>>> Interface
>>> IP-Address OK?
> Method Status Protocol
>>> FastEthernet0/0
>>>
> 12.12.12.1 YES manual up up
>>> FastEthernet0/1
> unassigned YES unset administratively down
>>> down
>>> Loopback0
> 1.1.1.1 YES manual up
>>> up
>>> Cisco-R1#
>>>
>>>
> Cisco-R1#sh runn int fa0/0
>>> Building
>>> configuration...
>>>
>>> Current
> configuration : 91 bytes
>>> !
>>> interface FastEthernet0/0
>>> ip address
> 12.12.12.1 255.0.0.0
>>> duplex auto
>>> speed auto
>>> end
>>>
>>> Cisco-R1#
>>>
> Cisco-R1(config)#ip route 23.23.23.0 255.255.0.0 12.12.12.2
>>> %Inconsistent
>>> address and mask
>>> Cisco-R1(config)#
>>>
>>>
>>> Blogs and organic groups at
> http://www.ccie.net
>>>
>>>
> _______________________________________________________________________
>>>
> Subscription information may be found at:
>>>
> http://www.groupstudy.com/list/CCIELab.html
>>
>>
>> Blogs and organic groups at
> http://www.ccie.net
>>
>> _______________________________________________________________________
>> Subscription information may be found at:
>> http://www.groupstudy.com/list/CCIELab.html
>
>
> Blogs and organic groups at http://www.ccie.net
>
> _______________________________________________________________________
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html
>
>
>
>
>
>
>

-- 
Carlos G Mendioroz  <tron_at_huapi.ba.ar>  LW7 EQI  Argentina
Blogs and organic groups at http://www.ccie.net