I'm running into an issue where my headend vpn router is removing static on its own even though the ipsec tunnel is still up. It drops randomly (I have had it disappear in 15 mins or 4 hours later) and what's odd is that it will re-add the static on its own at random times (again like 15 mins after it drops or 4 hours after it drops, very random). Clearing the tunnel does not restore the static. Clearing the config and re-adding will however but obviously this is not a good solution. I can confirm the tunnel is still up but doing a show crypto ipsec sa and I see the tunnel is still there.
The design and config is pretty simple. One headend vpn router (3825 runnign 12.4 IOS) and one remote router (871 router) configured for lan to lan. The crypto map on the headend router is using reverse-route subcommand to inject statics when the tunnel is up.
Ah, I should have mentioned that I can't have that since I have a backup router in a different location. I'm redistributing statics into eigrp so the remote office route will appear in one of two locations depending where the tunnel is going to at the moment.
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...