Thanks everyone. I changed it with absolutely zero noticeable downtime.

""sam sneed""  wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> Hello group,
>
>  I have a question that could probably be easily anwered. We are changing
> our subnet mask to add a new network. Its is on a 4700 router with ip
> classless setup. We use real IP's but i'll but private ones on the
example..
> Ex. eth0 is now 172.16.10.0/24. I want to split this network in half so I
> wish to make eth0 172.16.10.0/25 and eth1 172.16.10.128/25. Eth0 leads to
> our production network. I want to have this change over with zero
downtime.
> The Ip address on the interface (172.16.10.1) must stay the same. Is there
> anyway to change the subnet mask only with zero downtime? UNIX allows you
to
> put 2 statements on a singel line split by a ; . Does cisco ios have
> something simliar?
>
> sam sneed




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