Would there/could there be a concern about ARP table cache entries and the associated MAC addresses? I've made changes before and found that I had to clear entries (reboot) hosts such as firewalls because of cached entries.
Chris -----Original Message----- From: Daniel Cotts [mailto:[EMAIL PROTECTED]] Sent: Monday, October 01, 2001 1:26 PM To: [EMAIL PROTECTED] Subject: RE: Secondary address on router [7:21576] I'd say Yes. I've never tried this so take it with a grain of salt. First verify that all your PCs are appropriately addressed. configuration changes take effect immediately. So: config t ip subnet-zero int e0 ip address 172.16.10.1 255.255.255.128 cntrl Z Should do the trick. > -----Original Message----- > From: sam sneed [mailto:[EMAIL PROTECTED]] > Sent: Monday, October 01, 2001 11:12 AM > To: [EMAIL PROTECTED] > Subject: Secondary address on router [7:21576] > > > 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 Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=21587&t=21576 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
