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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