(Whoops I just replied to the wrong post...)
Clayton here is my thoughts:

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
""Clayton Price"" <[EMAIL PROTECTED]> wrote in message
8v25eb$miq$[EMAIL PROTECTED]">news:8v25eb$miq$[EMAIL PROTECTED]...
> I have a Frame Relay connection between to locations.  One location is
> subnetted 10.4.0.0/27 10.4.0.32/27 10.4.0.64/27 10.4.0.96/27 10.4.0.128/27
> and 10.4.0.160/27.  My WAN Link is 10.252.0.0/30 the network at the other
> end of the WAN Link is 10.1.1.0/24.
>
> I'm having some problems getting EIGRP to summarize this.  Is it due to
the
> fact that it only summarizes when crossing a classful network boundry?
For
> example if my WAN link was 192.168.10.0/30.
>
> I also noticed on my 3600 series routers I have an option for EIGRP wild
> card mask bits under the network command while at the config-router#
prompt.
> I do not have this option on my 2600 series routers, both are running
> 12.0(5) IOS.
>
> Thanks,
>
> Clayton Price
>
>
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