We have a 3rd party remotely monitoring our Netscalers via their management interface on ip addresses 172.30.0.51 and 172.30.0.52. This monitoring is completed via a site to site vpn between our ASA 5585's and their peer device.
Approximately once a week (various days, times) the 3rd party will report that our Netscalers are down because they have not received a ping reply for at least 5 mins. However, the devices are not down and any internal pings to the devices appear ok. A diagram is attached.
Is it possible that our ASA's are causing a delay in the echo reply ? Is there any monitoring we can perform on the VPN to check the traffic ?
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...