8.3(1) was the probably worst ASA-version ever with the most bugs on this platform. So I assume that the only solution is to upgrade. As a workaround, regular reboots could help also. These are nearly non-disruptive in a failover cluster. For that reboot the standby unit, after that do a failover to the standby unit and reboot the former active unit. If that doesn't help (I had these situations log time ago) reboot both units at the same time.
Sent from Cisco Technical Support iPad App
Don't stop after you've improved your network! Improve the world by lending money to the working poor:
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...
[toc:faq]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 and UDP are I...