Simon,
Since you seem to be very knowledgeable on this topic, I'm wondering if you would help
clear this issue. Now that the summary-address is applied to the interface,
and the software Null0 interface is in the routing table. Would you know of any
circumstances that would cause the Null0 interface to prevent the router from trying
to forward traffic to other routers in search of a more precise match?
Thanks!
Simon Hope wrote:
> Eigrp will summarise to classfull boundry if you leave the default "auto
> summary" running,
>
> to summarise your networks on a non clasfull boundry you need to use an
> interface specific summarisation statement, but first turn off auto
> summarisation on the EIGRP process
>
> example:
>
> router eigrp [AS]
> no auto
>
> int s0.1
> ip summary-address eigrp 10.4.0.0 255.255.0.0
>
> As for the mask command on the 3600,
>
> In version 12.0(4) T Cisco introduced the ability to mask off some classful
> networks from the eigrp process. This feature makes EIGRP a truly classless
> protocol. Check your IOS versions again - is one of them the "T" version??
>
> Before 12.04T, any subnet in the network defined in your eigrp "network"
> statement would go into the topology table. If you didn't want neighbors to
> see some of these subnets you would have to filter them
>
> Cheers
>
> SImon
>
> ""vtam"" <[EMAIL PROTECTED]> wrote in message
> 8v28os$s86$[EMAIL PROTECTED]">news:8v28os$s86$[EMAIL PROTECTED]...
> > Now i have two route sent to a eigrp neigbor, there are 23.125.0.0/19 and
> > 23.125.0.0/16, i want the receiver just selete the 23.125.0.0/16 route. I
> > cannot do summary in the output way, how can i do filter in the receiver?
> > Thanks.
> >
> >
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