Crypto Keepalives/DPD not working properly since 7.x upgrade
We're having problems with IPSec tunnels going down and not coming back up by themselves since the upgrade to 7.x. We never had this problem on 6.x, and connections to other manufacturers' VPN devices as well as IOS devices appear to be affected.
We have this configured for the tunnel-attributes:
isakmp keepalive threshold 30 retry 2
But it does not seem to help. The Pix also reports that the command is deprecated, but does not provide an alternative.
On the IOS side, we have this configured:
crypto isakmp keepalive 30 2 periodic
Any ideas how we can resolve this short of reverting to 6.x?
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...