Patent ID: 7843930
Filing Date: 2010-11-30
Classification: H04L

Abstract:
1. A computerized method for handling a packet fragment in a router having a plurality of router elements, wherein the router elements include a plurality of route processors, wherein the plurality of route processors includes a first route processor, the method comprising: building an Internal Forwarding Information Base (IFIB), wherein the IFIB maps one or more flows to router elements; receiving a packet fragment; forwarding the packet fragment to the first route processor; processing the packet fragment with other packet fragments in order to assemble a reassembled packet; accessing information from the IFIB for forwarding information associated with the reassembled packet; and forwarding the reassembled packet to one of the plurality of route processors as a function of the IFIB associated with the reassembled packet, wherein each router element includes a Pre-IFIB, wherein a subset of entries in the IFIB are stored in each Pre-IFIB, and wherein forwarding the reassembled packet to one of the plurality of route processors as a function of the IFIB includes accessing the Pre-IFIB.