Changing public IP

Unanswered Question
JORGE RODRIGUEZ Tue, 11/20/2007 - 09:08

My friend I ran into the exact same scenario, there is no other way other than conduct a thorough fw configuration isnpection, however, since you are chanching ISP which is mosutly your public IP block, glocal NAT, static NATs new defualt routes etc.. you can do the complete migration from PDM/ASDM, when chnaging these PDM automcatically updates rules, but good to have a backout plan or script for CLI as other resource of changing configuration . If you have any particular question Im sure someone will provide some hints.



sbaddipudi Tue, 11/20/2007 - 10:49

The way we designed it, we have one vlan that faces the internet. We also have redundant ISPs as one of the requirements. For us that is not a huge load to migrate between ISPs.


johnd2310 Wed, 11/21/2007 - 11:32


If possible, you could make it easier by getting a new box, configure for the new isp and then cutover with minimal downtime. I always find these exercises a good time to upgrade hardware as well.




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