Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!magnus.acs.ohio-state.edu!csn!boulder!daemon
From: rene@geveke.nl (Rene van der Hauw)
Newsgroups: comp.dcom.sys.cisco
Subject: (none)
Message-ID: <34162@boulder.Colorado.EDU>
Date: 12 Apr 91 23:59:25 GMT
Sender: daemon@boulder.Colorado.EDU
Lines: 35

Dear People,
 
We are having a TCP/IP network and are going to install cisco
routers. Because we already knew that we were going to use
routers we preconfigured our class B network number. At this
moment we aren't using subnets, but we are planning to use 8 bits
as the subnet mask. In this way the third byte is used to
indicate a department and we are having thirty of them. So
the range of the third byte is 1...30.
 
Soon the first routers are arriving, but in the beginning we have
only 8 interfaces. Using Cisco, I know it is possible to
implement two IP address per interface, so I can implement 16
subnets, but this isn't not enough.
 
What can I do, because when I am changing the subnet mask, I have
to change it for the complete network. I don't like to change all
the IP address of the host stations, because in this way we have
to change the nameserver etc as well. 
 
Is there anybody with a good migration plan????
 
 
With kind regards
 
 
Rene van der Hauw
rene@geveke.nl
Hogehilweg 5
1101 CA Amsterdam
The Netherlands.