"The 1000-Mbps performance for IDS-4250-XL is based on the following conditions: 5000 new TCP connections per second, 5000 HTTP transactions per second, average packet size of 595 bytes, system running Cisco IPS 5.0 software."
The number applies to the entire sensor not individual ports. My understanding is that the performance numbers are only useful as a general indication of capabilities(i.e. they make certain assumptions about protocol usage and packet size). If you've really got 1Gig of traffic to monitor...you'd better test.
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...