*** I work for Stonesoft ***
Hi, A comment related to serial clustering technology in our product. Typically, inline serial cluster deployment is considered when the IPS inspection capacity becomes a bottleneck but when the link has not been saturated yet. E.g. inline IPS deployment for 10Gbit link when traffic volume or packet size distribution may become a problem for a single IPS, but which a cluster of IPSs can still handle. The StoneGate IPS serial clustering is a built-in active-active clustering solution that provides throughput scaling and high-availability for the network traffic inspection. In serial cluster, traffic passes through all the IPS nodes, but on a per-connection basis, only one node controls access and inspects the connection at the time. The other nodes simply bypass the traffic. >From network perspective, high availability can be provided the same way as it >would be done for a network cable; with a redundant network topology. As an >alternative solution for serial cluster throughput scaling, link aggregation >solutions can be used with IPS systems too. Tomi
