I've never done this before... I've migrated countless networks to new ip schemes.
But you have not given us a whole lot of info to go by. check out this link. Is this what you are trying to accomplish? http://www.cisco.com/warp/public/105/52.html#subfirstone There are other reasons to route to null as well. What are your goals? -Patrick >>> "Stanfast Preye" 05/01/02 02:34PM >>> Dear Group, Why is it necessary to configure all routers in a network with "ip route xxx.xxx.xxx.xxx null 0" statement before implementing migrating to a new IP address scheme and DHCP service in the network. Somebody please help!!!!!!!! Regards, Preye. --------------------------------- Do You Yahoo!? Yahoo! Tax Center - online filing with TurboTax >>>>>>>>>>>>> Confidentiality Disclaimer <<<<<<<<<<<<<<<< This email and any files transmitted with it may contain confidential and /or proprietary information in the possession of WellStar Health System, Inc. ("WellStar") and is intended only for the individual or entity to whom addressed. This email may contain information that is held to be privileged, confidential and exempt from disclosure under applicable law. If the reader of this message is not the intended recipient, you are hereby notified that any unauthorized access, dissemination, distribution or copying of any information from this email is strictly prohibited, and may subject you to criminal and/or civil liability. If you have received this email in error, please notify the sender by reply email and then delete this email and its attachments from your computer. Thank you. ================================================================ Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=43006&t=43001 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]

