Re: bit flags for default routing

Hi Nagendra,

    Thanks for the response. Do yo mean "ip default-network" command ?....If
so,I got your explanation.Thank you for explaining and clarifying the
purpose of bit flag for default routing

Regards
Anantha Subramanian Natarajan

On Thu, Aug 6, 2009 at 11:19 PM, NN Kumar <nagendra.cisco_at_gmail.com> wrote:

> Hi Anantha,
> As yo might be aware, IGRP, being classful routing protocol doesnt
> advertise "0.0.0.0" network. Instead, you configure "ip default-subnet
> <SUBNET>" to advertise the default candidate which will be set as Gateway of
> last resort in other routers.
>
> When "ip default-subnet " command is configured on a router, the router
> will set this FLAG in External TLV to inform other routers to use this
> subnet as default candidate route.
>
> HTH,
> Nagendra
>
> On Thu, Aug 6, 2009 at 2:32 PM, Anantha Subramanian Natarajan <
> anantha.natarajan_at_gravitant.com> wrote:
>
>> Hi All,
>>
>> I was referring to this link
>>
>> http://www.cisco.com/en/US/tech/tk365/technologies_tech_note09186a0080093f07.shtmland
>> was reading under the heading "Route
>> Tagging".Uder the same,it mentions as below.In that,what is meant by bit
>> flags for default routing means and how it is useful or what is its
>> significance.Thanks for the help.
>>
>>
>> External routes are tagged with the following information:
>>
>> -
>>
>> The router ID of the EIGRP router that redistributed the route.
>> -
>>
>> The AS number where the destination resides.
>> -
>>
>> A configurable administrator tag.
>> -
>>
>> Protocol ID of the external protocol.
>> -
>>
>> The metric from the external protocol.
>> -
>>
>> *Bit flags for default routing*
>>
>> Regards
>> Anantha Subramanian Natarajan
>>
>>
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Received on Thu Aug 06 2009 - 23:26:07 ART