During the RPKI presentation there was a question about resilience of the router if the RPKI cache loses connectivity. The IOS-XR implementation allows multiple caches to be configured. When a cache loses connectivity, the entries from that cache are purged after a time interval. Default is 60 seconds and it is configurable. A lookup of a prefix that is not loaded will return not-found. 5 seconds after the latest RPKI database update, a refresh request is sent to each neighbor, provided that the neighbor either: - dropped any received route due to a policy that contains validation-state, or - received a route, the validation state of which changed. If soft reconfiguration inbound is configured, then the refresh is avoided, because the received paths are stored.
Thanks, Jakob.
