As far as I know the error you describe is normal for 6513-type switches configured on the CS-MARS. I get that message alot when a device isn't syslog reporting anything for a while. Please note that you can have Netflow correctly set up on a device and still get this message. Make sure the 6513 has at least one of the MARS interfaces configured as the syslog server and set the 6513 debug log.
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...