Patent ID: 7184394
Filing Date: 2007-02-27
Classification: G06F,H04L

Abstract:
1. A router comprising: at least two router modules, only one of which is in an active state at any given time, the other router modules being in a standby state; and changeover means which causes one of said other router modules to go from a standby state to an active state if the router module in the active state stops, each of said at least two router modules having connections with at least one network, and having at least one state machine, each state machine managing an interface associated with one of said connections, wherein each of said at least two router modules has data storage means which, in the active state, enable storing of data relating to the state of said at least one state machine, if said at least one state machine is in a stable state, and data retrieval means for retrieving said data if a changeover occurs.