Is the preempt option available in active standby ASA firewall setup with single context...somewhere i have read that same is available in active-active setup or active/standby setup with multiple context..
If i active the multiple context mode on product environnement with two ASA5520 in Active/Standby mode, what are the impacts on the the production?
If you need to change the ASA from single to multiple context mode, i would strongly suggest that you configure it during downtime, not during production hour. To change the mode, the ASA also needs to be rebooted.
Here is more information on changing the mode, and what you need to be aware in regards to your existing configuration:
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...