Patent ID: 7433958
Filing Date: 2008-10-07
Classification: H04L

Abstract:
1. A packet relay processing apparatus having a network connecting device as a network adapter, wherein the network connecting device comprises: session managing unit managing a session; a packet processing unit relaying a packet based on session management made by said session managing unit; a routing table storing routing information about a routing destination of the packet; a routing processing unit determining the routing destination of the packet based on the routing information at the start of the session; a process distributing unit; and a plurality of service processing units, wherein said packet processing unit outputs the packet to the routing destination, said process distributing unit distributes the packet to at least one of the plurality of service processing units based on contents of a service for the packet, the service processing unit to which the packet is distributed performs a service process for the packet, said session managing unit searches a session table, in which the session information about the session above is stored, by using information included in the packet as a search key, upon receipt of the packet, if corresponding session information is not registered to said session table as a result of the search, said session managing unit obtains a corresponding policy from a policy table, in which the policy containing the regulations for performing service towards the packet is stored, by using the information included in the packet as a search key, and writes session information to said session table based on the obtained policy, and if corresponding information is registered to said session table as a result of the search, said session managing unit manages the session information stored in said session table based on a state of the session.