It's very hard and difficult to keep both configurations up to date. It's very ease to forgot one click and an ipsec connection doesn't work in case of switchover. Keeping filters identical it's a nightmare. I have a config with certificates.
It is safe to copy config file from primary, replace ip addresses of the interfaces and copy it to the backup device. And reboot backup device after that?
Yes it's safe to do this, provided you change the IP addresses in the config file everywhere. Be aware that they're not just on the interface, if you have OSPF and a few other options configured the IP addresses are listed under there as well. Make sure you do a global search for the IP address and change every occurrence otherwise you'll end up with weird things happening.
Other than that though, yes it is safe as I said, that's how I set up VRRP in the lab on two concentrators when I have to.
Table of ContentsIntroductionVersion HistoryPossible Future
UpdatesDocuments PurposeNAT Operation in ASA 8.3+ SectionsRule Types
Network Object NATTwice NAT / Manual NATRule Types used per SectionNAT
Types used with Twice NAT / Manual NAT and Network Obje...
Table of Contents Introduction:This document describes details on how
NAT-T works. Background: ESP encrypts all critical information,
encapsulating the entire inner TCP/UDP datagram within an ESP header.
ESP is an IP protocol in the same sense that TCP an...