We user the Cisco CVPN3030 and the Cisco CVPN client 3.5 (and 3.5 on the concentrator.) My question is - how crappy can the overall Internet end-to-end path be and still have the tunnel remain established? That is - at what point will latency or packet loss or bandwidth contstraints prevent a tunnel from remaining established? Are there any parameters that can make a tunnel more resiliant/tolerant of poor conditions such as high latency, low bandwidth etc. ??
We have configured the outside and inside Interface with official ipv6 adresses, set a default route on outside Interface to our router, we also have definied a rule , which also gets hits, to permit tcp from inside Interface to any6.
In Syslog I also se...