Re: filtering in eigrp

Yeah - Iwan needs to revisit the use of passive interface and EIGRP,
or let us in on the secret here. :-)

The behavior described below seems relevant for RIP v2, not EIGRP.

Here are my foremost option ideas for EIGRP prefix filtering:

EIGRP
Do Not Accept Prefixes  EIGRP
Option 1  offset-list
Option 2  distribute-list  can reference route-maps as well
Option 3  administrative distance
Option 4  metric maximum

Warmest Regards,

Anthony J. Sequeira, CCIE #15626
http://www.INE.com

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On Sep 7, 2009, at 2:09 PM, Mohamed El Henawy wrote:

> Sorry for brining this thread out of the dead
>
> how can we use passive interface ...neighborship will go down
>
>
> ----- Original Message ----- From: "Iwan Hoogendoorn" <iwan_at_ipexpert.com
> >
> To: "Mark Matters" <markccie_at_gmail.com>
> Cc: "Cisco certification" <ccielab_at_groupstudy.com>
> Sent: Friday, August 21, 2009 7:15 PM
> Subject: Re: filtering in eigrp
>
>
>> Dear Mark,
>>
>> You can filter EIGRP in the ways you provided
>>
>> - distribute-list
>> - redistribution with a route-map that looks at al prefix-list and/or
>> an access-list or you can even tag the route
>> - do a summery route
>>
>> But you can also go for the passive-interface command.
>> This way you only can only receive routes from your EIGRP neighbour
>> but not send anytin at all ... which is a kind of filtering in the
>> end
>> ;-)
>>
>>
>> --
>> Regards,
>>
>> Iwan Hoogendoorn
>> CCIE #13084 (R&S / Security / SP)
>> Sr. Support Engineer  IPexpert, Inc.
>> URL: http://www.IPexpert.com
>>
>>
>>
>> On Fri, Aug 21, 2009 at 5:57 PM, Mark Matters<markccie_at_gmail.com>
>> wrote:
>>> How many ways can I filter routes in EIGRP?
>>>
>>> distribute-list
>>> redistribute / route-map / acl / ip prefix
>>> summary
>>>
>>>
>>> Are there any other ways?
>>>
>>>
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>>
>>
>> --
>> Regards,
>>
>> Iwan Hoogendoorn
>> CCIE #13084 (R&S / Security / SP)
>> Sr. Support Engineer  IPexpert, Inc.
>> URL: http://www.IPexpert.com
>>
>>
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>>
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Received on Mon Sep 07 2009 - 15:36:56 ART