You need to change the default behavour of IKE so it will use hostnames.The command syntax for this is "crypto isakmp identity hostname" Then you need either DNS resolution or specify the hostname ie."ip host routera.domain.com 10.0.0.1.
Thank you for your answer! IKE seems to use hostnames instead of ip-adresses, but "set peers hostname" always resolvs the hostname and writes the ip-address in the config. Somthing must be still wrong....?!
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...